270 I'ERcrDJE. 



y. Dules malo. 



Diiles inalo, Cin\ ^- Vol. vii. p. 479 ; Dumont iV Urville, t. c. p. 43. 

 pi. 3. f. 4. 



mato, Less. Voy. Coq. Zool. ii. p. 223. 



leuciscus, Jenyns, Zool. of the Beayle, Fishes, p. 17. 



11 11-12 



The height of the body is one-third of the total length (without 

 caudal fin) ; the diameter of the eye is larger than one-third of the 

 length of the head, or than the distance between the eyes. Silveiy 

 white, brownish on the back ; the dorsal, anal, and ventral fins 

 brown-spotted. 



River Matavai (Otaiti). 



10. Dules bennetti. 



Perca argentea, Bennett, Fishes of Ceylon, pi. 22. 



Dules bounetti, (Bleeker) Peters,' Wiegm. Arch. 1855, p. 238. 



B. 5? {Bennett). D. ^. A. ■^. L. lat. 50. L. transv. 6/12. 



Caudalis forked. .Uniform sUvcry ; a black streak along the middle 

 of the c^iudal, and on each lobe two obli(]ue black transverse bands, 

 confluent into an oval ; all the other fuas immaculate. {Benn.) 



Sea of Ceylon {Bennett). Fresh waters of Mozambique {Peters). 



a. Adult. Presented by Sir- A. Smith. — The soft dorsal fin with a 

 black tij). Perhaps a variety of D. tcenmrus. 



11. Dules ambiguus. 

 Datnia ambigua, Richardson, Voy. Ereb. Sc Terr. Fishes, p. 25. pi. 10. 

 D. i^. A. |. L. lat. 85. 



The spines of the fins very strong ; the snout rather elongate, much 

 longer than the eye ; pra5operculum with spinous teeth at the infe- 

 rior limb, directed foi-^-ards. Coloration uniform. 



Western Australia. 



a. Adult : bad state ; has been in chloride of zinc. From the Haslar 



Collection. 



b, c. Adult: stuffed. West Australia. Presented by Captain Sir (> . 



Grey. 



