(40) 



Branchiostegals, 6. 

 Head in length, 2%- 

 Depth, 3 1-10. 

 Eye in head, 4. 

 Dorsal IV, 10. 

 Anal. Ill, 6. 

 Ventrals, 7. 

 Pectorals, 10. 

 Lat. 1., 44. 



Longitudinal rows, 8-10. 

 The specimen of Aphredodereus meas- 

 ures 3 inches. 



Branchiostegals, 6. 



Head in length, 3. 



Depth, 3 1-10. 



Eye in head, 4%. 



Dorsal, III, 11. 



Anal, III, 6. 



Ventrals, 7. 



Pectoral, 10. 



Lat. 1., 48. 



Longitudinal rows, 10-11. 



The largest specimen of Sternotremia 

 from the dozen or more examined, is 2)^ 

 inches; thefaverage is about 2 inches. 



FAMILY SCIAENIDAE. 



Genus HaploidonotuRy Rof. 



40. H. gruuniens, Raf. Sheepshead. Common in Lake Michigan and 

 all the larger rivers. 



FAMILY COTTIDAE. 



Genus Cottopsis, Grd. 



41. C ricei, sp. nov.. Rice's Cottus. Through my friend Mr. F. L. 

 Rice, of Evanston, I am enabled to make the present interesting addition to 

 the lake fauna. The only specimen seen is the type, which was picked up 

 on the shore of Lake Michigan near Evanston, and placed in my hands for 

 identification by Mr. Rice. 



Description : Head, 3 3-5 ; depth, 5 1-3 ; eye 4 J, li in inter-orbital 

 space and equals snout ; first dorsal 8, second dorsal and anal destroyed. 

 Ventral I, 4 ; pectoral 15 ; palatine teeth present ; body short and stout, 

 head much depressed ; back almost terete. Body abruptly contracted oppo- 

 site base of anal ; tail very small, sub-terete. Outline tadpole-like. Jaws 

 about equal ; mouth rather narrow ; jaws contracted and somewhat pro- 

 duced ; head very broad and flat, broader than body, breadth greater than 

 length ; depth half length. Eyes on upper surface, near together. Pre- 

 opercular spine extremely large ; three times as large as in any other fresh 

 water cottoid known : as long as eye ; hooked backward and upward, giv- 

 ing a buffalo-like appearance. Three spines hooked downward below the 

 large spine ; the lower concealed. A strong spine hooked forward at base 

 of opercles. Branchiostegals 6. Isthmus as wide as from snout to middle of 

 orbit. Base of pectorals crescentic, their tips just short of anal. Rays all 

 simple. Ventrals under pectorals, decurrent. 



Ventrals reaching 3 of the distance to vent. Profile rising rapidly to 

 dorsal, which runs along a sort of carina. Dorsal beginning a trifle behind 

 ventrals, just behind the head, about midway between snout and anal. Vent 

 midway between snout and base ©f caudal. 



Depth at first ray of anal less than half length of head ; thickens at 

 same point over ^. 



Least depth 4 of head. Caudal peduncle extremely slender and sub- 

 terete, suggesting a stickleback. Head smooth. Space above lateral line 



