36S CARCHARIlDiE. 



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 G. lamia. The first dorsal commences 

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

 margin not convex. 



Ganges ; Fcejee 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. llayncr, Esq. 

 The specific distinctness of Carclianas (Prionodon) leucns, M. & 

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

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

 Henle, C leucas would appear to have the shorter snout, whilst 

 Dumcril describes that of G. gangetlcus 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 evidentlj^ identical with G. 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 amblyrhynchus. 



Carcharias (Prionodon) ambhrhyuchus, BIcvh. Nat. Tych. Xed. Inch 

 X. p. 467. 



Sostro ando, ixirte pra^oraVi tivtus longitudine j)auh, rictus latitu- 

 dine midto breviore ; naribus rostri apici multo niagis quam angulo 

 oris approximatis ; dentibus maxilla superiore triangulaiibus parum 

 obliquis, totis denticiilatis basi latis, basi externe processu denticulis 

 majoribus serrato ; dentibus maxilla inferiore gracilibus rectis den- 

 ticulatis basi latis. Dorsali prima pectoralibus multo magis quam 

 vcntralibus approximata ; dorsali secunda quintuplo 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, emai'ginatis, acutis ; anaU 

 medio basin caudalis inter et ventrales sita, dorsali secunda multo 

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

 toralibus inferne albis apice nigricantibus ; ventralibus caudalique 

 nigricante marginatis. (Bllr.) 



Java. 



22. Carcharias fasciatus. 



Carcharias (Prionodon) fiisciatus, Bleck. Nat. Tijds. Ned. Ind. iv. 

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



Eostro valde obtuso antice semicirculariter rotundato, latitudine 

 rictus paulo breviore ; parte prasorali rictus latitudine plus duplo 

 breviore, 1^ in rictus longitudine ; naribus rostri apici plus duplo 

 quam angulo oris approximatis, valvula trigona valde conspicua ; 

 rictu valde cm-vato, multo latiore quam longo. Dentibus iitraque 



