铅色海豚在我国的首次发现

THE FIRST RECORD OF PLUMBEOUS DOLPHIN FROM CHINA

本文详细的报导铅色海豚的外部形态、骨骼和分布。本文根据1982年在北部湾捕获的雄性标本为材料。标本长2米,重约185公斤。身体铅灰色。外形和骨骼的特征以及测量在图版Ⅰ—Ⅱ和表1—4里作简要的说明。标本椎式 C_7+T_(12)+L(10)+Ca_(21)=50,前两个颈椎愈合,鳍肢五指。指骨指式Ⅰ:1,Ⅱ:8,Ⅲ:6,Ⅳ:3,Ⅴ:1,后肢遗迹也作了描述。

The paper presents a detailed account of the external feature,skeleton and the distribution of plunbeous dolphin. This paper is based on a male collected specimen from the Bay of Beibu wan in 1982.The body length are 2.Om,the maximum weight is about 185 kg and its colow shows cream plump—eons—grey,[ln plates Ⅰ—Ⅱ and Tables 1—4,the paper gives a brief illustration on the characteristics of its externae fcature and skeleton。] The vertebral formala of the specimen BH8212 is C_7+T_(12)+L_(10)+Ca_(21)=50. The first two cervical vertebrae are fused together.Flippers have five fingers and the phalangeal formula is Ⅰ:1,Ⅱ:8,Ⅲ:6,Ⅳ:3,Ⅴ:1。Theree are two trace of hind leg bones remained.