368 CABCHARIID^. 



with a slight trace of a notch ; the lower teeth denticulated like the 

 upper, erect, narrow, with broad base. Pectoral fin elongate, falci- 

 form, but shorter than in C lamia. The first dorsal commences 

 immediately behind the base of the pectoral, and has the anterior 

 margin not convex. 



Ganges ; Feejee Islands ; ? Japan. 



a. Stuffed, 32 inches long. Calcutta. Presented by E. Blyth, Esq. 



b. Stuffed, 30 inches long. In fresh waters of the island of Viti- 



Levu. Presented by F. M. llayner, Esq. 



The specific distinctness of Carchanas (Pnonodon) leucas, M. & 

 H. p. 42 ; Dumeril, ?. c. p. 358, from the "West Indies, is not evi- 

 dent from the descriptions. According to that given by Miiller and 

 Henle, C. hmas would appear to have the shorter snout, whilst 

 Dumeril describes that of C. gangeticiis as " tres court et mousse." 

 Our examples agree perfectly with Miiller and Henle's description of 

 C. leucas (except in colour, which is said to be whitish), yet spe- 

 cimen a is from the Ganges, and evidently identical with C. gan- 

 geticus, the original description of which only partially applies to it. 

 Such difficulties of determination are the inevitable consequence as 

 soon as the species are unduly multiplied, as is the case in the genus 

 Carcharias. 



21. Carcharias ambl3rrh3rachus. 



Carcharias (Prionodon) amblvrhynchus, Bleek. Nat. Tyds. Ked. Ind. 

 X. p. 407. 



Hostro acuto, parte proiorali rictus longitudine pauJo, inctus latitu- 

 cline multo breviore ; naribus rostri apici multo magis quam angulo 

 oris approximatis ; dentibus maxilla superiore triangularibus parum 

 obliquis, totis denticulatis basi latis, basi externa processu denticulis 

 majoribus serrato ; dentibus maxilla inferiore gracilibus rectis den- 

 ticulatis basi latis. Dorsali prima pectoralibus multo magis quam 

 ventralibus appro ximata ; dorsali secunda quintuple circiter ejus 

 longitudinis a dorsali prima remota, dorsali prima triplo circiter hu- 

 miliore et breviore, longiore quam alta, anali tota opposita. Pec- 

 toralibus capite vix longioribus, 5|- circiter in longitudine corporis, 

 paulo minus duplo longioribus quam latis, emarginatis, acutis ; anali 

 medio basin caudahs inter et ventrales sita, dorsali secunda multo 

 altiore sed vix latiore. Caudali 4 fere in longitudine corporis, Pec- 

 toralibus iuferne albis apice nigricantibus ; ventralibus caudalique 

 nigricante raarginatis. {Blkr.) 



Java. 



22. Carcharias fasciatus. 



Carcharias (Prionodon) fasciatus, Bleek. Nat. Tyds. Ned. Ind. iv. 

 p. 510, or Verh. Bat. Gen. xxiv. Flag. p. 37. 



Rostro valde obtuso antice semicirculariter rotundato, latitudine 

 rictus paulo breviore ; parte prceorali rictus latitudine plus duplo 

 breviore, 11 in rictus longitudine ; naribus rostri apici plus duplo 

 quam angulo oris approximatis, valvula trigona valde conspicua ; 

 rictu valde cui'vato, multo latiore quam longo. Dentibus utraque 



