12. uKKRKs. ayy 



ctenoid. Six branchiostegals. Pscudobranchiae. (The lower pha- 

 ryngeal bones separated.) Air-bladder simple. 

 East Indian rivers. 



1. Datuioides polota. 



Coins polota, Bach. Ham. pp. 9o, 370. pi. 38. f. 31 ; Faun. Jnpoii. Poiss 



p. 17 ; Richards. Ichth. iSulph. p. 83. 

 binotatus, Grai/, Lid. Zool. Pi^c. pi. 2. f. 2 ; Faun. Jnpon. Poiss. 



p. 17 ; Richards. Ichth. Su/2)h. p. 83. 

 Datnia polota, Canto?; Catal. p. 10. 



Lobotes hexazona, Bleek, Natuurk. Tt/ds. Ned. Ind. i. p. 9, ii. p. 165. 

 Datnioides polota, Bleek. I. c. v. p. 441. 



B. 6. D. ||. A. g-^. L. lat. 70. 



Greenish, with eight blackish cross-bands. 



Estuaries of the Ganges ; rivers of Borneo and Sumatra. 

 a. Adidt. Borneo. 

 h-h. Half-gTown and j'oung. IncUa. 

 i. Yoimg. India. Presented by W. Masters, Esq. 



2. Datnioides microlepis. 

 Bhteker, Borneo, vii. p. 442. 



B. 6. D. ^. A. -. L. lat. 75-80. 



15 9 



• Red, with eight black cross-bands. 

 LRiver Kapuas (Borneo). 



I 



^■i 12. GERRES*. 



^^P Gerre.s, Ctiv. Rbgne Anim. ; Cur. ^ Val. vi. p. 446. 



^^" Catochfenimi, Cant. Catal. p. 55. 



Form of the body compressed, oblong or elevated. Mouth very 

 protractile, and descending when thrast out. Eye rather large. Pi-ae- 

 operciilum generally entire. Six branchiostegals. No canine teeth. 

 Dorsalis deeply notched, ^vith the formula -^ ; analis — ^, . Caudal 



r J ' ^ 10 '_ 7 (-9) 



forked. Scales moderate, minutely or not ciliated. Air-bladder 

 ' simple ; pyloric appendages in small number. Pseudobranchiae. 



All the tropical seas, entering fresh waters. One species from the 

 ; coast of North America. 



* 1. Gerres bilobvis, Cuv. cf- Val. vi. p. 466. — Cape Verde. 



2. peruvianus, Cuv. <^ Val. vi. p. 467 ; Less. Voy. Coq. Zool. Poiss. 



p. 180.— Coast of Peru. 



3. ricliii, Chiv. ^- Val. vi. p. 469.— East Indies? 



4. Smaria lineatus, Htonholdf, Ohscrv. Zool. p. 185. pi. 46. f. 1. — Gerres h- 



neatus, C'ni:^- Val. vi. p. 470. — Acapiilco. 



5. Gerres limbatus, Cuv. cf- Val. vi. p. 476. — Catochsenum liinbatum, Cant. 



Catal. p. 5/J. — East Indies. 

 G. lucidus, Cuv. cf Val. vi. p. 477. — Pondicherry. 



7. waigiensis, Quni/ cj Gaim. Voi/. Fret/c. Zool. p. 292. — Waigiou. 



8. Eiicinostomus argenteus, Baird ^- Gir. Ninth Smithson. lieporf, p. 345, 



probably slioukl be referred to this genus. Tiie species being the 

 1 most northern, is highly interesting ; but the description given 



1 does not distinguish it from East Indian species. — Coast of New 



Jersey. 



z 2 



