ClIONDItOPTERYGII. SELACIIOIDET. 



21. (1.) Zygsena blochii. (Fig. 4.) 



Zygfena bloohii, Citrifr, /.'///'"' -l/tini. ii, p. 127; Tr//. J/t'm. 3/>/s. ix, 

 p. 227, pi. i, f. 2 ; J%, .!&/*. 7wftVi, p. 711), pi. clxxxiv, tig. 4 (see 

 eynon.). 



Kinrtn sorrah, Tarn.; S;>pa sorrah, Tel.; .%a wzaw &M<*y, Burmese. 

 Each lateral expansion of the side of the head from twice to thrice 

 ns long as broad, and with a deep groove along the anterior edge, 

 reaching externally nearly as far as the orbit. The posterior edge 

 of the lateral expansion about as long as its anterior edge, while 

 the external edge is nearly straight. Nostril much nearer the 

 mouth than the eye. Eyes situated near the upper angle of the 



Fig. 4. Zyffeena blochii. 



external edge of the lobe of the head. Teeth oblique, externally 

 notched and smooth in their entire extent. Fins the dorsal 

 arises slightly behind the base of the pectoral, extending nearly 

 halfway to above the ventral ; second dorsal arising above the 

 posterior half of the anal, than which it is much smaller. Colour 

 of a deep grey or brownish -grey, becoming lighter beneath ; the 

 fins are usually of a slightly deeper colour than the body. 



Unit. Seas of India to the Malay Archipelago, and beyond. 

 Blyth observed that it rarely exceeded 4 feet in length. This is 

 the commonest form on the Malabar coast, where the fishermen 

 consider it attains to a very large size. 



22. (2.) Zygsena malleus. 

 Squalus zygsena, Linn. Syst. Nat,, p. 300. 

 Zygrena malleus, Shaw, Nat. Misc. viii, pi. 207 Day, Fish. India, 



p. 719, pi. clxxxvi, fig. 4 (see synon.). 

 Nga man thamvoot, Burmese. 



The hind edge of the lateral expansion of the head nearly equals 

 its width near the eye, and has a groove along almost its entire 

 anterior margin. Nostrils close to the eye. Colour body and 

 fins slaty-grey ; under surface white. In a female taken at Pinang, 

 ( 'union observed 37 living young, of which 20 were males and 17 

 females. 



J/nfi. Tropic.-il and temperate sens. 



