[H] 



CATALOGUE OF THE FISHES OF NORTH AMERICA. 



148 d. Ictiohim velifer difforviis Co-pe. Vw. (121) 



149. Ictiobus cypriiaus ' Le Sueur. Ve. 



58.— CYCLEPTUS Rafinesque. (62) 



150. Cycleptus elongatus Le Suenr. Vw. (122) 



59.— PANTOSTEUS Cope. (63) 



151. Pantosteus plebeius- Baird & Girard. R. (123, 124, 125) 



152. Pautosteus generosus ' Girard. R. (126,127) 



153. Pantosteus guzmaniensis^ Girard. R. (128) 



60.— CATOSTOMUS Le Sueur. (64) 



154. Catostomus araeopus Jordan. T, (134) 



155. Catostomus clarki^ Baird & Girard. R. (144) 



156. Catostomus discobolus Cope. R. (129) 



157. Catostomus latipinnis Baird & Girard. R. (130) 

 158 Catostomus nebulifer Garmau. R. (130c.) 



159. Catostomus retropinnis Jordan. R. (130) 



160. Catostomus catostomus''' Forster. Vn. Y. (132) 



161. Catostomus tahoensis Gill & Jordan. R. (133) 



162. Catostomus labiatus Ayres. T. (133) 



163. Catostomus macrochilus Girard. T. (136) 



164. Catostomus occideutalis Ayres. T. (137) 



'All the specimens of Carpjorfes from east of the Allegheny Mountains examined 

 by me belong to a species closely related to I. velifer, but with the opercle nearly 

 smooth, instead of strongly striate, as in the western species. In the eastern form, /. 

 cyjjrinus, the eye is quite small, the body rather deep, and the dorsal fin rather high. 



- Pantosteus bardus and delphinus are almost certainly identical with P. plebeius. The 

 type of the latter species has the scales 90-30, less crowded forwards than in P. genero- 

 SHs; those before the dorsal much less reduced in size. Dorsal rays, 9; head, 4f ; depth, 

 5 ; snout moderately broad, projecting; fins much lower than iu P. guzmaniensis. 



" Pantosteus platyrJiynclius is based on shriveled specimens of P. generosus. 



<The type of Catostomus guzmaniensis, lately examined by me, is a Pantosteus, and I 

 am unable to distinguish it from the type of P. virescena on comparison of the two 

 specimens. Lat. 1. 100 in guzmaniensis. Scales before dorsal, 46 to 53 ; fins high. 



'" The type of Catostomus clarki, lately found, belongs to a species very closely related 

 to C. arceopus, having the restricted fontanelle and cartilaginous lips of the latter 

 species, but with the scales less crowded anteriorly, there being but 23 in a line before 

 the dorsal instead of 42, as in C. arceopus. D. 11 ; lat. 1. 70. C. discobolus, C. arceopus, 

 and C. clarki mark a transition from Catostomus toward Pantosteus. 



" Called iu the text, Catostomus longirostris. The form described by Mr. Mather 

 under the name of Catostomus nanomyzon should apparently be referred to this species. 

 Brown ; male with a red lateral band in the breeding season ; head slender, flat- 

 tened above; the snout shorter than in C. catostomus; lips thick, the lower with 3 

 or 4 rows of tubercles ; eye large, 4 in head, 1^ in snout. Scales smaller anteriorly, 

 but little crowded ; dorsal higher than long ; pectorals reaching front of dorsal ; 

 head, 4; depth, 5; D. 1, 10; A. 7; V. 9 ; scales, 14-99-11; L. (spawning specimens) 

 4J inches. Big Moose Lake, Adirondack region. Apparently a dwarfed brook variety 

 of C. catostomus, but inhabiting the same region and spawning at a much smaller size. 

 (Mather.) (Catostomus nanomyzon. Twelfth Rept. Survey Adirondack Region, 1884, 

 36.) 



