988 FISHES — COTTID^. 



spines still lower ; pectoral fins reaching vent. ; D. VI-16 ; A. 11 ; V.I. 3; P. 13. Length' 

 of specimens 2 1-6 inch. 



Habitat, Lake Michigan — in deep water ; two specimens known. 



Female specimen taken 12 miles off Racine, Wis,, in 12 fathoms, June 4th, 1875, by Dr. 

 Hoy ; the male off Milwaukee, Jane 15th. The specimens are now in bad condition, 

 from rongh bacdling. The female is distended with ripe eggs, so that the width of the 

 body is one- third the total length. 



This species seems to be quite distinct from all those described by jSrirard. The peculiar 

 characters are the number and form of the preopercular ipines, the contracted mouth, 

 the large eyes, the stnall size of the body, and the length of the ventral fins. This curi- 

 ous little fish is as yet known only from the waters of Lake Michigan, but its occurrence 

 in Lake Erie, also, is not improbable 



169. Ueanidea fbanklini (Agassiz) Jordan. 



Cottus franklini, Agassiz, Lake Superior, 1850, 303. — Girard, Monogr. Cott., 53. — GuN- 



THKR, ii, 158. 

 ZTranidea franMini, Jordan, Man. Vert., Ed. 2d, 1878, 252. 

 f Cottus formoaua, Girard, Monogr. Cott., 1851, 58. 

 Uranidea kumlieni, Hoy, Mas. — Nelson, Bull. Ills. Mus. Nat. Hist., 1876, 41. — Jordan, 



Proc. Acad. Nat. Sci. Phila., 1B77, 64. 



Olivaceous, mottled ; both dorsals and asal with a broad dark bar on the distal half; 

 pectorals and caudal broadly blotched with dusky; jaws equal; preopercular spine 

 stout, short, pretty strongly hooked upwards and inwards ; first dorsal rather high, not 

 much lower than second ; pectorals short, not reaching anal ; axil prickly, as in L. rich- 

 ardsoni: head 3^ ; depth 5 ; D. VIII-17 ; A. 11 or 12. Length 3 inches. 



Habitat, deep waters of the Great Lakes: Lake Superior, Lake Michigan, TLake 

 Ontario. 



This small species has not yet been obtained in Lake Erie, although doubtless occur- 

 ring there. 



160. Ubanidea gracilis (Heckel) Putnam. 



Slender miller's Thumb. 



Cottus gracilis, Heckel, Ann. Wiener Mus., ii, 1837, 148. — Girard, Proc. Am. Assoc Adv. 



Sc, 18."0, 401 ; Proc. Best. Soo. Nat. Hist., iii, 1850, 189 ; Mon. Cottoids, 85, 49. 

 Uranidea gracilis, Putnam, Bull. Mus. Coinp. Zool., 1863.— Jordan, Man. Vert., Ed, 1st, 

 ' 1876, and Ed. 2d, 1878, 252. 



Uranidea quiescens, DeKay, Nat Hist. N. Y. Fishes, 1842, 61. 

 Cottus gobio, Ayres, Bost. Journ. Nat. Hist., 1845, 121 (not of Linnssus). 



Description. — Olivaceous, mottled, upper edge of spinous dorsal red in life ; body rather 

 slender, fusiform ; preopercular spine moderate, concealed; mouth rather large, themax- 

 lary reaching nearly to the pupil ; pectorals reaching front of anal ; ventrals about to 

 vent ; head 3i ; depth 5 ; D. VIII, 16 ; A. 12. Length 2J inches. 



Habitat, New England and New York; the common Eastern species found "quiea- 



