TIDE-POOL FISHES FROM KAKLUK. 
191 
these; a filameut on uasal splines; a series of three or four short filaments ou margin of pre- 
opercle and at oi>ercular angle; a series of pores around under side of jaw and along edge of 
proopercle, two concentric series under eye and across cheek, and others scattered on head 
behind eye and across check ; skin smooth, lateral line strongly arched. Dorsal fins connected 
at base, third spine longest, 2.75 in head, margin of fin even from third to sixth spines, origin 
of spinous dorsal over upper edge of gill-opening; soft dorsal higher, longest rays 2 in head, 
its base two-fifths length of body; tijis of anal rays free, longest 2.34 in head; origin of anal 
under third ray of soft dorsal ; longest iiectoral ray a little longer than head; caudal truncate, 
1.5 in head; ventral about reaching anal, about same length as anal jiapilla; tail slender, 
least depth slightly less thau eye, length from anal 1.80 in head, its length from dorsal about 
equal to its depth. Color in life pale-pinkish, si)inous dorsal dusky, nearly black along the 
margin, soft dorsal plaiu, or with dusky crossbars; anal with about seven dusky crossbars, 
extending downward and forward abnost at right angles to the rays; three or four pale 
blotches surrounded bj^ a black ring along base of dorsal, one between dorsals, one at cud of 
soft dorsal and others at base of soft dorsal (some or all sometimes absent); a curved dark 
line from snout through eye to preopercular spine. 
Six specimens, IJ to 3 inches long, from rock pools at Karluk, Alaska. The type is in 
Leland Stanford Junior University Museum, No. 5884; cotypes are in United States Fish 
Commission and United States National Museum. 
KavXoi, stem, from the many dorsal rays. 
Sir/mistes caulias Putter. 
8. Oxycottus acuticeps (Gilbert). 
Common in the rock pools at Karluk. Largest specimen taken, 2.5 inches. Slate color, 
varying to pink; pectoral with cross blotches around the margin; anal papilla very largo, 
tridigitate at tip ; female with a free membrane around vent. The following are measurements 
on nine specimens 1.6 to 2.1 inches long, not including caudal fin, the head and depth being 
expressed in hundredths of the body. 
9. Porocottus bradfordi Rutter. 
Porocottns bradfordi Rutter, in Jordan & Evermaun, Fishes of North and Middle America, 
part III, 2862, 1898, Karluk, Alaska. 
This species differs from ForoooUm sellaris in the presence of cirri on top of head; it has 
more numerous fin rays and more cirri on head than Forovottus quadrijilis. 
