中国南海蛇鳗科一新纪录属及一新纪录种(鱼纲,鳗鲡目)

A NEW RECORD GENUS AND A NEW RECORD SPECIES OF OPHICHTHIDAE FROM THE SOUTH CHINA SEA (PISCES, ANGUILLIFORMES)

报道了中国南海蛇鳗科 1新纪录属EchelusRafinesque,1810和 1新纪录种Echelusuropterus (TemmincketSchlegel,184 6 )。该属的特征为 :尾鳍、胸鳍存在 ;背鳍起点在胸鳍后端之前 ;头部无额骨孔、眶后孔和上颞骨孔 ;鳃孔中等大 ;鳃膜骨条连于舌骨或上舌骨尖前。该种的特征 :尾尖柔软 ;颌齿和犁骨齿颗粒状 ,带形 ;后鼻孔在上唇边缘外侧。

This paper is a report on a new record genus Echulus Rafinesque,1810 and a new record species E. uropterus (Temminck et Schlegel,1846) of Ophichthidae from the South China Sea. The fish of the genus Echulus can be distinguished by the follo- wing characters: caudal and pectrol fin present; origin of dorsal fin placed before the end of pectoral fin; frontal, postorbital and supratemporal pores absent in head; gill opening unconstricted; branchiostegal rays originate either in association with hyoid or before level of epihyal tips. The main characters of the new record species are: caudal fin soft; teeth of both jaws and vomer villiform in band; posterior nostril opening placed at edge of lip.