988 FISHES—COTTID &. 
spines still lower; pectoral fins reaching vent; D. VI-16; A.11; V. 1.3; 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, June 15th. The specimens are now in bad condition, 
from rough handling. 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 Girard. The peculiar 
characters are the number and form of the preopercular spines, the contracted mouth, 
the large eyes, the small 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 . 
159. URANIDEA FRANKLINI (Agassiz) Jordan. 
Cottus franklini, AGAssiz, Lake Superior, 1850, 303.—G1IRARD, Monogr. Cott., 53.—GuN- 
THER, li, 158. 
Uranidea franklini, JORDAN, Man. Vert., Ed. 2d, 1578, 202. 
? Cottus formosus, GIRARD, Monogr. Cott,, 1851, 58. 
Uranidea kumlient, Hoy, Mss.—NELSON, Bull. Ills. Mus. Nat. Hist., 1876, 41.—JORDAN, 
Proc. Acad. Nat. Sci. Phila., 1577, 64. 
Olivaceous, mottled; both dorsals and anal 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. rieh- 
ardsoni: head 34; depth 5; D. VIII-17; A. 11 or 12. Length 3 inches, 
Habitat, desp Waters of the Great Lakes: Lake Superior, Lake Michigan, ? Lake 
Ontario. 
This small species has not yet been obtained in Lake Erie, although doubtless occur- 
ring there. 
160. URANIDEA GRAcILIS (Heckel) Putnam. 
Slender Miller’s Thumb. : 
Cotius gracilis, HECKEL, Ann, Wiener Mus, ii, 1837, 148.—GiRARD, Proc. Am. Assoc. Adv. 
Se., 1850, 401; Proc. Bost. Soc.-Nat. Hist., iii, 1850, 189; Mon. Cottoids, 85, 49. 
Uranidea gracilis, PUTNAM, Bull. Mus. Comp. Zool., 1863.—JORDAN, Man. Vert., Ed. 1st, 
1876, and Ed. 2d, 1878, 252. 
Uranidea quiescens, DEKayY, Nat. Hist. N. Y. Fishes, 1842, 61. 
Cottus gobio, AYRES, Bost. Journ. Nat. Hist., 1845, 121 (not of Linneus). 
Description.—Olivaceous, mottled, upper edge of spinous dorsal red in life; body rather 
slender, fusiform ; preopercular spine moderate, concealed ; mouth rather large, the max- 
lary reaching Heaste to the pupil; pectorals reaching front of anal; ventrals about to 
vent; head 34; depth 5; D. VIII, 16; A.12. Length 22 inches. 
Habitat, New England and New York; the common Eastern species found ‘“‘ quies- 
