PISCES. 113 



Anal fin covered with small scales, very long, confluent with 

 caudal. 



Sp. Notopferus Pallasii nob., Gymnolus notopterus PALL., Spirit. Zool. vn. 

 Tab. 6, fig. 2, &c. East Indian fresh-water fishes, which resemble Silurus 

 in the defect of the sub-operculum. They have affinity with Mormyrus, and, 

 notwithstanding their small scales, with Osteoglossum. 



Chirocentrus Cuv. Body covered with very minute scales, 

 compressed, with abdomen carinate. Lower jaw produced beyond 

 upper. Teeth conical in jaws, the lower and two middle upper 

 larger; teeth very small in palate, in vomer none. Branchiostegous 

 membrane with 8 rays. Pectoral fins inserted in a furrow between 

 two lamellae, hard, triangular, acute, covered with scales. Ventral 

 fins very small. Dorsal fin placed over anal, shorter than anal. 



Sp. Chirocentrus dordb VAL., Clupea dorab FORSK., Esoce ckirocentre LACEP. 

 Poiss. v. PI. 8, fig. i ; in the Red Sea and the Indian Ocean. 



Alepocephalus Risso. Body covered with large thin scales. 

 Head naked. Teeth very thin in a single row in intermaxillary 

 bone and lower jaw. Palatine teeth very small, in vomer and 

 tongue none. Branchiostegous membrane with 6 rays. Dorsal 

 and anal fins scaly at the base, opposite to each other, remote. 



Sp. Alepocephalus restrains Risso, Cuv. et VAL. Poiss. xix. PL 566 ; in the 

 Mediterranean Sea at great depths. This fish has no swimming-bladder. 

 CUVIER refers it to the Esocii, but there are here twelve pyloric appendages, 

 which, beside other characters, oppose this. 



Lutodeira VAN HASS., RUEPPELL, Chanos LACEP. Mouth eden- 

 tulous. Body covered with scales, moderate. Two triangular scaly 

 lamellae at the base of both pectoral and ventral fins. Caudal fin 

 deeply forked, with two horny lamellae on each side at the base 

 of lobes. Branchiostegous membrane with 4 broad rays. Branchial 

 aperture ample, produced under the throat. 



Sp. Lutodeira chanos RUEPP., Mugil chanos FORSK. Descr. Animal, p. 74; 

 Red Sea ; Lutodeira orientalis VAN HASS., Bantam, RENARD Poissons, 

 Ecrevisses et Crabes de la Her des Indes, PL 34, fig. 184 ; Indian Ocean, &c. 



Butyrinus CoMMERS., Albula GRONOV., VALENC. Body elon- 

 gate, covered with scales, hard, moderate. Head naked, with co- 

 nical snout produced beyond mouth. Teeth small, crowded, conical, 

 acute, in intermaxillary bone, in palate and in lower jaw; teeth 

 VOL. II. 8 



