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在整理江西地区陆生贝类标本时,经比对鉴定发现1新种,龙潭弯螺Sinoennea longtanensis 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、栖息环境作了记述,并与其近似种进行讨论. 相似文献
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中国陆生贝类一新种(柄眼目:坚螺科) 总被引:2,自引:0,他引:2
1984年至1986年间作者在云南省南部地区考察,获得陆生贝类标本一批,经鉴定发现一新种,即金平坚螺Camaena jinpingensis、隶于肺螺亚纲、柄眼目、坚螺科、坚螺属。本文对其新种形态特征,栖息环境进行了描述,并对其相近似种也进行了讨论。 相似文献
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《Evolution; international journal of organic evolution》1984,38(3):643-643
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1. The conductivities of aqueous solutions of glycine, d,l-valine, and l-asparagine have been determined, and comparisons have been made with similar data reported in the literature. 2. On the basis of certain theoretical considerations, calculations of the expected conductivities of aqueous solutions of glycine, asparagine, aspartic acid, and glutamic acid have been made and these data have been compared with similar data obtained experimentally. 3. The dissociation constants of the carboxyl groups of aspartic acid and glutamic acid have been calculated from conductivity data. 4. It is shown that alanine has no effect on the ionic atmosphere of solutions of potassium chloride. 相似文献