中国弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

2011年8月在云南省泸水县进行陆生贝类调查过程中,于蛮云采集到一些弯螺属个体,经鉴定为中国弯螺属一新种,蛮云弯螺新种Sinoennea manyunensis sp.nov.。弯螺属的种类主要分布于东亚和南亚地区;对新种的形态特征进行了详细描述,并与近似种进行了比较、讨论。模式标本保存在昆明医科大学基础医学院细胞生物学与医学遗传学系。     

福建弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

记述了中国弯螺属1新种,即福州弯螺Sinoennea fuzhuouensis sp.nov..弯螺属的种类主要分布于东亚和南亚地区,对新种的形态特征进行了详细描述,并与近似种进行了比较和讨论.     

云南西双版纳热带雨林弯螺属一新种记述(肺螺亚纲,柄眼目,长颈扭轴蜗牛科)

在对云南西双版纳热带雨林陆生软体动物生物多样性调查时,经比对鉴定发现一新种,即勐仑弯螺Sinoennea menglunensis sp.nov.。隶属肺螺亚纲柄眼目长颈扭轴蜗牛科弯螺属。对新种形态特征、栖息环境作了详细记述,并与近似种福州弯螺Sinoennea fuzouensis Zhou,Chen&Guo,2006和弗尔弯螺Sinoennea fargesiana(Heude,1890)进行了比对和讨论。新种模式标本保存在福建出入境检验检疫局国家软体动物检疫鉴定重点实验室和台湾国立高雄大学生命科学系实验室。     

江西弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

整理江西岩溶地貌陆生贝类标本时,经比对鉴定发现一新种,即石钟山弯螺Sinoennea shizhongshanensis sp.nov.,隶属肺螺亚纲柄眼目扭轴蜗牛科弯螺属。对新种形态特征和栖息环境进行了详细描述,用扫描电镜观察了新种齿舌的细微结构,并与其近似种进行了比较和讨论。     

浙江弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

记述了浙江弯螺属一新种,即龙塘山弯螺新种Sinoennea longtangshanensis sp.nov.。标本采自浙江省临安市龙塘山清凉峰自然保护区。弯螺属的种类主要分布于东亚和南亚地区,在我国主要分布于长江以南的地区。龙塘山弯螺贝壳小型(壳高4.40 mm,壳宽2.40 mm),壳质薄,有6.5个螺层,胚螺层和第二螺层光滑,无肋纹,壳口具4枚齿。模式标本保存于中国科学院动物研究所。     

中国弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

笔者在整理福建地区陆生贝类标本时,经比对鉴定发现1新种,即蛹形弯螺Sinoennea pupoidea sp.nov,.隶属肺螺亚纲、柄眼目、扭轴蜗牛科、弯螺属.对新种形态特征、柄息环境作了记述,并对其近似种也进行了讨论.     

中国弯螺属一新种(肺螺亚纲,柄眼目,扭轴蜗牛科)

系统整理和研究了中国弯螺属的种类,共10种,其中1新种即茂兰弯螺Sinoennea maolanensis sp.nov.,弯螺属的种类主要分布于东亚和南亚地区;作者对其已发表的种类进行了整理、甄制,对新种的形态特征进行了详觋细描述,亦与近似种进行了比较、讨论.     

中国喇叭螺属一新种记述(肺螺亚纲,柄眼目,虹蛹螺科)

记述了采自贵州的陆生贝类1新种,南江贝喇叭螺Boysidia(Bensonella)nanjiangensis sp.nov.,新种与潼关贝喇叭螺Boysidia(Bensonella)tongguanensis Chen&Zhang,2002近似,文中附新种特征图。模式标本均保存于中国科学院动物研究所。     

中国云南喇叭螺属一新种(肺螺亚纲,柄眼目,虹蛹螺科)

详细记述了喇叭螺属Boysidia一新种,金平喇叭螺新种Boysidia(Bensonella)jinpingensis sp.nov.。对新种的形态进行了详细描述,并与其近似种进行了对比和讨论。模式标本保存于昆明医科大学细胞生物学与医学遗传学系标本室。     

喇叭螺属一新种(肺螺亚纲,柄眼目,虹蛹螺科)

在贵州省喀斯特地貌区陆生贝类多样性调查采得的标本中,经鉴定得喇叭螺属1新种,即兴义贝喇叭螺Boysidia(Bansonella)xingyiensis sp.nov..对新种的形态进行了详细描述,与其近似种进行了对比.正、副模标本均保存于中国科学院动物研究所标本馆.     

中国喇叭螺属一新种记述(肺螺亚纲,柄眼目,虹蛹螺科)

记述采自贵州省陆生贝类1新种,巩尧山喇叭螺Boysidia(Boysidia)gongyaoshanensis sp.nov.,文中对新种形态特征、栖息环境进行了描述,并对其相似种进行了分析和讨论。     

云南管螺属一新种记述(肺螺亚纲,柄眼目,烟管螺科)

记述采自云南省石林县陆生贝类1新种,即石林管螺Phaedusa shilinensis sp.nov.,文中对新种形态特征、栖息环境进行了描述,并对其相似种进行了分析和讨论。     

Two new species of the genus Boysidia from China,with a preliminary discussion of its geography (Pulmonata: Stylommatophora: Pupillidae)

Two species of the genus Boysidia Ancey, 1881 were reported as new to science, Boysidia(Boysidia) xianfengensis sp. nov. and B.(B.) xiaoguanensis sp. nov., while the distribution of the 23 species of Boysidia from China was discussed. The materials of the new species were collected from Hubei Province, China by authors. The shell of B.(B.) xianfengensis sp. nov. looks small(height 4.90 mm, diameter 3.10 mm), and has five apertural teeth: one large parietal tooth, one long columellar tooth, one small nipple-shaped upper palatal tooth, one large flake-shaped lower palatal tooth, one small infrapalatal tooth. The shell of B.(B.) xiaoguanensis sp. nov. looks small(height 3.55 mm, diameter 2.20 mm), and has four apertural teeth: one large parietal tooth, one long columellar tooth, one large flake-shaped upper palatal tooth, one slightly small flake-shaped lower palatal tooth. The type specimens of the new species are deposited in the Institute of Zoology, Chinese Academy of Sciences, China.     

Shell structure of two polar pelagic molluscs, Arctic Limacina helicina and Antarctic Limacina helicina antarctica forma antarctica

The purpose of this study was to investigate shell growth performance in two thin-shelled pelagic gastropods from cold seawater habitats. The shells of Arctic Limacina helicina and Antarctic Limacina helicina antarctica forma antarctica are very thin, approximately 2–9 μm for shells of 0.5–6 mm in diameter. Many axial ribbed growth lines were observed on the surface of the shell of both Limacina species. Distinct axial ribs were observed on the outermost whorl, while weak or no rib-like structures were observed on the inner whorls in the larger shell of L. helicina antarctica forma antarctica. For L. helicina, no ribs were observed on small individuals with three whorls, while larger individuals had distinct ribs on the outer whorls. Shell microstructure was examined in both species. There is an inner crossed-lamellar and extremely thin outer prismatic layer in small individuals of both species, and a distinct thick inner prismatic layer was observed beneath the crossed-lamellar layer in large Antarctic individuals. Various orientations of the crossed-lamellar structure were observed in one individual. Shell structure appeared to be different between the Antarctic and Arctic species and among shells of different size.     

中国四川北部一沟颈螺新种(柄眼目,艾纳螺总科)描述(英文)

描述了栖息于甘肃南部的陆生贝类艾纳螺科1新种,南坪沟颈螺Holcauchen nanping sp. nov.。与各已知种相比,南坪沟颈螺的次体螺层最膨大;腭壁板齿及腔壁齿阙如;具1枚强壮轴唇齿;在生殖系统中,鞭状器小,乳突状;成荚器无盲囊;纳精囊管分支盲管缺乏。南坪沟颈螺,新种Holcauchen nanping sp. nov. (图1～4)鉴别特征次体螺层最膨大;无腭壁板齿与腔壁齿;轴唇齿1枚,强壮。鞭状器小乳突状;成荚器无盲囊;纳精囊管分支盲管缺乏。正模,HBUMM06584-specimen 1,具软体部的成体,四川省九寨沟县风成寺,2011-08-14,吴岷、徐沁、Prem B.Buhda采。模式标本保存于河北大学博物馆。词源:新种种名源自九寨沟县旧称"南坪"。     

Localization of digestion activities in polyps ofNausithoe planulophora andThecoscyphus zibrowii (Coronatae, Scyphozoa, Cnidaria)

Coronate polyps are unique among cnidarians in having a complete peridermal tube, a ring canal, and four radial canals or pores at their oral region. Moreover, most of these species possess tooth whorls that narrow the gastric cavity considerably. Using fluorescence-labeled prey, it was demonstrated that the ring canal is not involved in digestion or redistribution of nutrients but possibly serves as a hydrostatic flex point for the fast retraction of the tentacle crown into the exoskeleton. The tooth whorls considerably affect the localization of digestion activities by blocking the passage of large prey fragments. Hence, endocytosis in a coronate species with tooth whorls occurred around the uppermost tooth whorl whereas, in a species lacking tooth whorls endocytosis occurred at the basal end. To meet the high nutrient demands of the basal region, nutrients must be redistributed in the species with tooth whorls. The extra energy required for this redistribution could be an important disadvantage of tooth whorls.     

Morphological Features of Supralittoral Mollusks of the Genus Cecina (Gastropoda: Pomatiopsidae) from Peter the Great Bay, Sea of Japan

Amphibious mollusks of the genus Cecina in the littoral and supralittoral of the Sea of Japan are represented by three species: Cecina manchurica A. Adams, 1861; C. tatarica (Schrenck, 1867); and C. scarlatoi Prozorova, 1996. Additional data on the morphology of the shell and radula are provided. Indices for the identification of adult decollated and corroded shells of these species which retained only 3.0–2.5 last whorls are proposed: (1) the ratio of the width of the ultimate whorl (without aperture) to the length of the ultimate and penultimate whorls and (2) the ratio of the width of the third whorl (from the bottom) to the width of the ultimate whorl (without aperture).     

青城细辛的花器官发生

利用扫描电镜观察了青城细辛（Asarum splendens）的花器官发生过程。青城细辛的花器官为轮状结构,向心发生,依次为两轮3基数的花被原基,两轮6基数的雄蕊原基和一轮6基数的心皮原基。两轮花被原基互生,只有外轮（先发生的一轮）花被原基完全发育,而内轮（后发生的一轮）花被原基在发育过程中逐渐退化。两轮雄蕊原基为离心发生：位于内侧的一轮雄蕊原基先发生,每两个原基正对第一轮发生的花被原基,外侧的一轮雄蕊原基后发生,与内轮雄蕊原基互生。心皮与内侧的一轮雄蕊互生。     

Introduction to Cover Illustration：Tetraena mongolica Maxim.

Tetraena mongolica Maxim. is the only member of the genus Tetraena that belongs to the family Zygophyllaceae. It is characterized by the following features： small deciduous shrubs, 30-50 cm tall, much branched;leaves paripinnate,opposite on current year branches,and fascicled on old branches; leaflets 2,