摘要
本文报道了中国科学院海洋研究所30多年来在我国各海区进行调查时所采获的海螂科双壳类软体动物的新种和新记录,它们是第一次发现于太平洋的球海螂属的两个新种:黄海球海螂Tugonia huanghaiensis sp.nov.和中华球海螂Tugonia sinensis sp.nov.。另外还描述了两个新记录:矩形拟海螂Paramya recluzii和侧扁隐海螂Cryptomya busoensis。加上过去由各学者报道的砂海螂Mya arenaria、日本海螂Mya arenaria japonica和截形脉海螂Venatomya turncata,中国近海共有海螂科7种。
The present paper deals with two new species,Tugonia huanghaiensis sp.nov.and T.sinensis sp.nov.,and two new records,namely Cryptomya busoensis Yokoyama and Paramya recluzii A.Adams,of Myidae.All type specimen are deposited in the Institute of Oceanology,Academia Sinica.Tugonia huanghaiensis sp.nov.(Pig.la)Shell inflated,globular in shape.Umbo located near the middle,prominent,directed anterior.Rounded at the anterior margin,constricted,truncated and slightly gaping at the posterior margin.Anterior dorsal margin gently curved,the posterior dorsal margin rather straight.Surface covered with a light yellowish periotracum.Sculpture of shell surface divided into three parts,anterior part with growth line,middle part with fine radial ribs and growth lines.Posterior part small,with the same sculpture as anterior part.Right valve with a large chondrophone.Pallial sinus short.Anterior and posterior inner margin smooth,middle margin crenulated by the ending of radial ribs on the surface.Holotype(73m-030)Jiaozhou Bay,Oct.30,1973.Paratype(56m-101)Rudong,Jiangsu Province,June 10,1956.Tugonia nobilis A.Adams is a closely related species to this new species,but the former has a ridge from the umbo to the postero-ventral margin.Tugonia sinensis sp.nov.(Fig.lb)Shell thin,fragile and swollen,with tumid,slightly proscoeleus umbo,situated behind the middle of dorsal margin.Outline elongato-ovate in shape with a slightly truncated and gaping posterior margin,sculpture of surface divided into three parts.anterior part with concentric growth lines and minutely irregular granulated;middle part largest,with fine radial ribs and growth lines;posterior small,with growth lines only.Pallial sinus short and broad.Anterior muscle scar slender,posterior one peach shape.Holotype(84m-185)Huian,Fujian Province,17 July,1984.This species is distinguished from other species of genus by having particular sculpture of surface.
作者
徐凤山
Xu Fengshan(Institute of Oceanology,Academia Sinica,Qingdao)
出处
《海洋与湖沼》
1987年第5期437-441,共5页
Oceanologia Et Limnologia Sinica
