510 NEW YORK STATE MUSEUM 



and downward from eye; ventral fins dusky in the male; vertical 

 fins with dusky sijecks; a small inklike speck at base of caudal 

 persistent m most specimens; a black spot on anterior rays of 

 spinous dorsal. 



Length 2^ to 3 inches. Great lakes region, from Lake Cham- 

 plain to Lake Huron; rf'presented in New York waters by the 

 subspecies C. p u t n a m i . 



2.51 Cottogaster cheneyi p]vermann & Kendall 



Cottoffastrr rheiui/i Evermann & Kendall, Bull. U. S. F. C. 1897, 129. pi. 8, 

 fig. 8, 1898, Itacket River near Norfolk, N. Y.; Jorda?^ & Evekmann, 

 Bull. 47, r. S. Nat. Mus. Ill, 2851. 1898. 



Head four; depth six; eye four in head; snout four; maxillary 

 three and one half; interorbital width five and one half. D. 

 XI-12; A. II, 8. Scales 7-56-6. Bodv rather stout, heavv for- 

 ward, compressed behind; head heavy; mouth moderate, slightly 

 oblique, lower jaw included, maxillary reaching front of pupil; 

 premaxillaries protractile; cheeks, opercles, breast, and nape 

 entirely naked; scales of body large and strongly ctenoid; lat- 

 eral line complete, straight; median line of belly naked ante- 

 riorly, with ordinary scales posteriorly; fins large; dorsals sep- 

 arated by a s])ace equal to half diameter of eye, origin of 

 spinous dorsal a little nearer origin of soft dorsal than tip of 

 snout, its base about equal to length of head, longest dorsal 

 spinr two ,111(1 one half in head, the outline of the fin gently 

 and ic-iiliirly rounded; soft dorsal higher than spinous portion, 

 the second lo lOth rays about equal in length, scarcely twice 

 in li.-.id. (Ill- tirst, 11th, and 12th rays but slightly shorter than 

 tli<- oili.Ts: ;iii:il moderate, its origin under base of third dorsal 

 ray. ilir s|.incs slciidci-. ilir second a little longer than the first, 

 whose Icnglh is line.- iin,] three fourths in head, longest anal 

 rays ahoiii i w,, and one lifili i,, i,e:ui; caudal lunate, the lobes 

 """ piodii.rd and j.uinic.l ilian usual among darters; pectorals 

 '"'^' =""' l'"'iiii''l. 'Ik' middle rays longest, about one and one 

 si.Mli in Ii.;mI. ivaehing lips of ventrals; ventrals well separated, 

 in. I neaily ivaciiin- veni. I lie h.ngest rays one and one fourth 

 '""' <""!'" ill alroln.i. back dark brownish, covered with 



III 



