ON THE POSITION OF THE GENUS KARIMBOLEA (ASCLEPIADACE AE)

The position of the rare and monotypic genus Karimbolea is clarified. Its tribal affinities are examined using mainly floral characters; the former tentative placement in the tribe Asclepiadeae (Asclepiadaceae) is confirmed. Characters of vegetative and floral morphology are used to determine the position of the genus within the tribe Asclepiadeae. Sarcostemma is identified as the most likely sister taxon of Karimbolea. Triterpenoid data obtained from gas-liquid chromatographic analysis of latex are used to test this hypothesis. This paper forms the first study within the Asclepiadaceae using two independent data sets to clarify the position of a taxon of uncertain affinities.     

粉虱蚜属蚜虫的分布格局及其成因探讨(同翅目:扁蚜科)

本文以世界分布的 5种粉虱蚜属AleurodaphisvanderGoot蚜虫为材料 ,研究了该属的地理分布特点 ,现代分布格局及可能的起源。同时 ,利用蚜虫与寄主植物协同进化的关系 ,并结合古地理和古生物等方面的资料 ,探讨了粉虱蚜属的现代分布格局形成的可能原因。粉虱蚜属为典型的东洋区成分 ,但在中国大陆其分布向古北界有所渗透。根据该属蚜虫现代分布特点 ,推测中国的华中区是该属的现代分化中心。另外 ,推测形成该属现代分布格局的原因可能是由于各大陆之间的接合与分离     

马蹄香属营养器官解剖及其分类位置的探讨

对马蹄香属Ｓａｒｕｍａ Ｏｌｉｖ．营养器官的形态解剖进行了研究,首次报道该属植物叶片宏观结构;叶表皮和叶表面的微观结构;叶柄和茎的初生结构特征与次生结构特征,并与近缘属植物细辛属Ａｓａｒｕｍ Ｌ．的解剖学资料作了比较研究,发现两属的叶形均为心形;叶脉都是掌状脉序;叶沿无齿都具毛;且都是单毛;气孔器都是“毛茛科”型;叶柄维管束都呈“Ｖ”字形排列;从近轴端到远轴端都是呈３－４－４束的变化;茎的初生结构     

中国南方几种熊蛛（蜘蛛目：狼蛛科）

记述了采自我国南方的6种熊蛛,其中有3种新种,定名为:湄潭熊蛛Arctosa meilatnensis sp.nov..指囊熊蛛A.millensa sp.nov.和泉熊蛛A.springiosa sp.nov.;另有3种为新记录:印熊蛛A.indicus Tikader et Malhotra.1980.库定熊蛛A.khudiensis Tikader et Malhotra,1980和韩熊蛛A.kwangreungensis Paik et Tanaka.1986.前1种新记录的雄性为单性新发现。     

THE SYSTEMATIC POSITION OF LAROCHEA FINLAY, 1927, AND INTRODUCTION OF A NEW GENUS AND TWO NEW SPECIES (GASTROPODA: SCISSURELLIDAE)

Species of the gastropod genus Larochea Finlay, 1927 are shownto be scissurellids without an anal shell slit or foramen. TheNew Zealand species, L. miranda Finlay, 1927 and L. secundaPowell, 1937, brood their young in the right subpallial cavityagainst a modified inner lip that is set well behind the aperturalplane. Larochea scitula n.sp. is based on shells from WanganellaBank, southern Norfolk Ridge. Larocheopsis n. gen. is introducedfor a minute species from off northern New Zealand that lacksa shell brood chamber. Larochea miranda and Larocheopsis amplexan.sp. are either gonochoristic with smaller males or consecutivehermaphrodites, while Larochea secunda and L. scitula are evidentlygonochoristic, having mature males and females of similar size. (Received 23 July 1992; accepted 10 December 1992)     

近金线(鱼巴)属的分类地位及金线(鱼巴)属的鉴别特征(鲤形目:鲤科:(鱼巴)亚科)

本文根据系统学原理,提出了建立新类元的依据;并据此从分类和系统发育上论证了近金线(鱼巴)属Anchicyclocheilus Li et Lan独立成属的可能性,认为应将近金线(鱼巴)属归于金线(鱼巴)属;修订了金线(鱼巴)属Sinocyclocheilus Fang的鉴别特征.     

近金线属的分类地位及金线属的鉴别特征(鲤形目:鲤科:亚科)

本文根据系统学原理,提出了建立新类元的依据;并据此从分类和系统发育上论证了近金线属ＡｎｃｈｉｃｙｃｌｏｃｈｅｉｌｕｓＬｉｅｔＬａｎ独立成属的可能性,认为应将近金线属归于金线属;修订了金线属ＳｉｎｏｃｙｃｌｏｃｈｅｉｌｕｓＦａｎｇ的鉴别特征。     

中国产瓦韦属植物叶柄与根状茎的比较解剖研究

详细观察了已发表的60种瓦韦属植物叶柄和根状茎的横切面。瓦韦属植物叶柄维管束条数最多7条,最少2条,其中2个较粗,其余较细,排成一字型、三角型、四角型、半轮型等。根状茎上的维管束条数最少5条,最多16条,属于网状中柱,维管束不规则环形排列,夏绿种类厚壁组织较少或没有,常绿种类厚壁组织较多。叶柄与根状茎的研究对瓦韦属组的划分和种的确立有重要的参考价值。参考这些特征,瓦韦属相应地划分成六个组,即:大叶瓦韦组、扭瓦韦组、瓦韦组、革质叶瓦韦组、纸质叶瓦韦组、网眼瓦韦组。一些种类相应地进行了合并。     

FIRST RECORD OF THE CIRRIPEDE GENUS STRAMENTUM (THORACICA, SCALPELLIFORMES) FROM THE UPPER CRETACEOUS OF JAPAN

Abstract:  The scalpelliform genus Stramentum is described from upper Turonian–Coniacian (Upper Cretaceous) strata in the Mikasa area, Hokkaido (Japan), documenting the first record of the genus from the north-west Pacific Realm. The single articulated skeleton, which is horizontally embedded in a dark grey laminated mudstone, is specifically indeterminate because capitular plates are missing. However, peduncular morphology resembles that of S. ( S .) pulchellum (Sowerby Jr), which has been described from the Cenomanian–Turonian of Europe. The present record from Japan demonstrates that this cirripede genus had a wider geographic distribution than previously assumed during the youngest phase of its radiation.     

THE ANATOMY AND RELATIONSHIPS OF THE ORBITESTELLIDAE (GASTROPODA: HETEROBRANCHIA)

The anatomy of two genera of the marine gastropod family, Orbitestellidae,Orbitestella and Microdiscula, is described. They possess apigmented mantle gland and pallial renal organ, lack a ctenidiumand have a simple hermaphrodite genital system with an externalpenis. They lack buccal cartilages, have a simple oesophagus,a massive jaw and a crystalline style in the stomach. The Orbitestellidaeare shown to be primitive heterobranchs, perhaps related tothe northern-hemisphere freshwater family Valvatidae. (Received 9 September 1989; accepted 30 December 1989)     

海南杜克螨属二新种（真螨目;杜克螨科）

本文记述采自海南岛的杜克螨属二新种,即海南杜克螨Ｔｕｃｋｅｒｅｌｌａ ｈａｉｎａｎｅｎｓｉｓ ｓｐ．ｎｏｖ。和尖峰杜克螨Ｔｕｃｋｅｒｅｌｌａ ｊｉａｎ ｆｅｎｇｅｎｓｉｓ ｓｐ．ｎｏ。,模式标本保存于华南热带作物研究院植保所。