1. Olyra longicaudata. 



M' cm. I.e. tab. 21. fig-. 1. 



B. 6? D. l/7(?). A. 23. P. l/6(?). 

 Pectoral spine strong, serrated along both edges; caudal pro- 

 longed. {M'aell) 

 Khasya Mountains. 



40. BRANCHIOSTEUS. 



Olyra, sp., M'Ck'll. 



Branchiosteus, Gill, Pi-oc. Bost. Soc. Nat. Hist. 1862, p. 52. 



Head and body elongate, low ; a longish adipose fin ; dorsal fin 

 short, with a spine and with six soft rays ; anal fin of moderate 

 length, with less than twenty rays. Barbels eight. Head covered 

 with soft skin above ; eye small. Lower jaw pi'ojecting. Teeth 

 villiform ; palate edentulous. Gill-opening wide. Caudal rounded ; 

 ventral ^nth six (?) rays, inserted below the dorsal fin. . 



Khasya. 



Mr. Gill has introduced a new generic name for M'Clelland's 

 second species of Olyra, although its characters are still more 

 doubtful than those of the fii'st. 



1. Branchiosteus laticeps. 



Olyra laticeps, M'Clell. Cede. Journ. Nat. Hist. ii. p. 588. tab. 21. fig. 2. 

 B. 13? D. 1/6. A. 15. P. 9. 

 The anal rays gradually increase in length posteriorly. {M^Clell.) 

 Khasya Mountains. 



c. Palate toothless ; ventral rays eight or nine : Amiurina. 



41. AMIURUS*. 



Cat-fishes. 



Anieim'u.s, Rftfinesque, lehth. OJiiens. p. 65. 



Ictalurus, Rajinesqu^, I. c. p. 64. 



Adipose fin of moderate length ; a short dorsal fin with a pungent 



* 1. Pimelodus pullus, Dekay, New York Fauna, Fishes, p. 184. pi. 37. fig. 117. 

 — New York. 



2. felis, Agass. Lake Superior, p. 281. 



3. vulpes, Girard, Proc. Acad. Nat. Sc. Pkilad. 1858, p. 90, and Ichfk. 



U. S. 4' Mex. Bound, p. 33. pi. 18.— Texas. 



4. antoniensis, Girard, in If. 8. Pacif. B. R. E.rpl. Fish. p. 209. — Texas. 



5. hoyi, Girard, in Proc. Ac. Nat. Sc. Philad. 1859, p. 159. — Wisconsin. 



6. confinis, Girard, I. c. — Wisconsin. 



7. cupreoides(!), Girard, I.e. — Illinois. 



8. IjTix, Girard, I. c. p. 160. — Potomac. 



9. puma, Girard, I. c. — Charleston. 



10. vulpeculus, Girard, I.e. — Charleston. 



11. — — platycephalus, Girard, I. c. p. 161. — South Carolina. 



12. megalops, Girard, I. c. — Alabama. 



13. notatus, Abbott, in Proc. Ae. Nat. Sc. Philad. 1860, p. 569.— Kansas. 



