DESCRIPTIONS OF NEW AND LITTLE-KNOWN FISHES. 
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7 . Cottogaster cheneyi, new species. (PI. 8, lig. 8. ) 
Type, No. 48781, U. S. N. M. Cotypes, No. 48782, U. S. N. M. ; No. 527, U. S. F. C. ; and No. 5774, 
L. S- Jr. Univ. Mus. Length of type, 2£ inches. Type locality, Racket River, Norfolk, New. York. 
Collectors, Barton W. Evermann and Barton A. Bean. 
Head 4; depth 6; eye 4 in head; snout 4; maxillary 3|; interorbital width 5 A D. xi-12; A. 
II, 8 ; scales 7-56-6. Body rather stout, heavy forward, compressed behind ; head heavy ; mouth 
moderate, slightly oblique, lower jaw included, maxillary reaching front of pupil; premaxillaries pro- 
tractile. Cheeks, opercles, breast, and nape entirely naked ; scales of body large and strongly ctenoid ; 
lateral line complete, straight ; median line of belly naked anteriorly, with ordinary scales posteriorly. 
Fins large; dorsals separated by a space 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 spine 2-1 in head, the outline of the fin gently and regularly rounded; soft dorsal higher than 
spinous portion, the second to tenth rays about equal in length, scarcely 2 in head, the first, eleventh, 
and twelfth rays hut slightly shorter than the others; anal moderate, its origin under base of third 
dorsal ray, the spines slender, the second a little longer than the first, whose length is 3| in head; 
longest anal rays about 2j in head; caudal lunate, the lobes more produced and pointed than usual 
among darters ; pectorals long and pointed, the middle rays longest, about li in head, reaching tips of 
ventrals; ventrals well separated, not nearly reaching vent, the longest rays 1£ in head. 
Color in alcohol, hack dark brownish, covered with irregular spots and blotches of darker; side 
with about 8 or 9 large dark spots lying on the lateral line; belly pale; top of head dark; snout 
black; lower jaw and throat dark; a broad black line downward from eye to throat; cheek and 
opercles rusty; spinous dorsal crossed by a median dark line; ventrals blue black; other fins pale, hut 
dusted with rusty specks. 
An examination of the 14 cotypes shows some variation in the species. In 2 examples there is 
a well-developed frenum, rendering the premaxillaries nonprotractile, and in a third specimen the 
frenum is partially developed; in some individuals the origin of the spinous dorsal is exactly 
midway between the tip of snout and origin of soft dorsal. The females and immature males are 
less highly colored than the adult male described above. Length If to 2i inches. 
This species is most closely related to Cottogaster shumardi , from which it may be readily distin- 
guished by the shorter snout, the naked cheeks and opercles, the smaller soft dorsal, the smaller anal, 
and the different coloration. 
Fifteen examples of this interesting darter were obtained July 18, 1894, by Messrs. Evermann and 
Bean in the Racket River near Norfolk, St. Lawrence County, New York. It did not seem to be very 
common, .as only 15 examples resulted from numerous hauls of the collecting seine. 
Named for Mr. A. Nelson Cheney, State fish-culturist of New York, in recognition of his valuable 
contributions to our knowledge of the food and game fishes of that State. 
8. Dermatolepis zanclus, new species. (PI. 8, fig. 9.) 
Type, No. 48843, U. S. N. M. ; a specimen 20 inches long to base of caudal fin. Type locality, Key 
West, Florida, or more definitely, near Dry Rocks Reef, 1 mile east of Sand Key, on rocky bottom in 
5 fathoms. Collectors, Evermann & Kendall. 
Head 2f; depth 2+ ; eye 8 in head; snout 34; maxillary 3; mandible 2. D. xi, 19; A. in, 10- 
scales difficult to count, but about 30-130-35, those above lateral line counted obliquely backward 
and downward from origin of dorsal, those below from origin of anal upward and forward to lateral 
line. Branchiostegals 8; gillrakers 8 +12, short and stout, the longest If in orbit. 
Body stout, compressed, oblong-elliptical, the dorsal and ventral outlines about equally curved; 
head moderate, the profile rising from tip of snout to origin of dorsal fin, thence descending in a regular, 
gentle curve to caudal peduncle; a depression above nostrils and a slight one on nape; interorbital 
very narrow, equal to orbit ; mouth moderate, somewhat oblique ; premaxillaries protractile ; maxillary 
broad at tip, reaching vertical at posterior edge of the pupil; supplemental bone well developed; 
lower anterior edge of maxillary covered by the broad dermal flap of the premaxillary ; eye small, high 
up ; nostrils close together and close to eye, the anterior small and round, the posterior oblong-oval, 
much larger than the other. Small eardiform teeth on each j aw, those in front movable, scarcely canine- 
like ; similar teeth on vomer and a long, narrow band on each palatine. Preopercle coarsely serrate, 
the serrse short and blunt, more or less obscured by the skin ; opercle with a broad dermal border, 
somewhat produced at lower angle. Fins all large; origin of dorsal slightly in advance of base of 
pectoral, its distance from tip of snout equal to length of head; third dorsal spine longest, its length 
about 2* in head or 2% times length of first ray; interspinal membranes of the spinous dorsal deeply 
F. C. B. 1897—9 
