ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 451 
Dorsal beginning immediately above upper end of gill-slit, the spines short, strong 
and pungent, not flexible. Some of the anterior spines are short, but not free, the 
fin increasing in height to opposite front of anal, the longest spine equaling length 
of snout. The membrane of the last spine joins base of upper rays of caudal. Anal 
with two strong spines similar to those of dorsal fin, the second twice the length of 
the first and three-fourths that of highest dorsal spines. Anal rays all forked; the 
posterior longest, equaling length of snout and eye, free from the caudal. Caudal 
fin rounded in the younger specimens, lanceolate in adults, becoming in the latter 
three-fourths as long as head. Ventrals short, of one short spine and three simple 
rays, the fin one-fourth length of head. Pectorals large, the middle rays longest, 
two-thirds length of head. Scales small, smooth, elongate, imperfectly imbricated ; 
partially embedded or altogether wanting on anterior part of back. Cheeks scaled, 
head otherwise naked. Faint traces of a lateral line sometimes visible on middle of 
sides anteriorly. Head 6% in length; depth 13 to 14. Dorsal Lxrx; anal un, 41. 
Length 290 mm. 
Color in spirits: Light olivaceous (light yellowish in life), a continuous jet-black 
streak from occiput along each side of dorsal to base of caudal, with two interrupted 
black streaks below it, the lowermost running on middle of sides. Top and sides 
of the head darker, variously marked with anastomosing black lines and spots. 
Opercles blackish. Dorsal and caudal fins dusky translucent, without distinctive 
markings. Aual and ventrals white. Pectorals white or dusky. Roof of mouth 
black. Peritoneum black dorsally, white ventrally. 
Several specimens were seined near the mouth of the Nushagak River, Alaska. 
120. Leptoblennius nubilus (Richardson), 
Our specimens seem to agree in structural details with descriptions of L. nubilus 
from the North Atlantic, except that the ventral fins have but three soft rays. We 
have no specimens for comparison, and make the identification with some doubt. 
Pacific specimens seem lighter in color, with the dusky mottlings confined to the 
dorsal region and with a very distinct series of oblong brown blotches along lateral 
line, alternating with a lower series of small faint round spots. Under parts 
immaculate. The mottlings along base of dorsal frequently unite to form a series 
of oblong blotches alternating with those of lateral line. Other specimens show no 
traces of dorsal blotches. Dorsal fin translucent, faintly mottled with darker. 
Caudal with brownish crossbars. Fins otherwise unmarked. Fins and proportions 
as described for L. nubilus. Dentition also as in the latter; mandible with a single 
series of conical teeth, which widens at symphysis into an irregular double series or 
narrow patch; a similar series of conical teeth in premaxillaries, within which is a 
band of fine villiform teeth. Palate smooth. 
Numerous specimens from Bristol Bay, Alaska, dredged at stations 3241, 3242, 
3243, and 3244; depths, 44 to 14 fathoms. 
121. Poroclinus rothrocki Bean. 
A single specimen from north of Unalaska Island, station 3312, depth 45 fathoms. 
Depth at nape ;4 length, the body tapering uniformly backward. Vent placed 
_anteriorly, its distance from snout 1$ to 1% in its distance from base of caudal. 
Head 64 in length. Snout compressed, slightly projecting, the lower jaw included. 
Maxillary reaching vertical from front of pupil, 34 to 34 in head. Teeth acute, in 
narrow bands in the jaws, a single well-marked series on vomer and a patch on 
front of palatines, those on vomer and palatines fully as large as those on jaws and 
‘equally developed in young and adults. Eyes large, close together, the interorbital 
| space convex, its width about half pupil. Diameter of orbit equals length of max- 
illary, about 34 in head. Nostril tubes well developed, half diameter of pupil. 
Gill-openings narrower than in other described members of this group, extending 
forward below the vertical from posterior part of cheeks, where they are firmly 
joined to isthmus, across which they do not form a fold. Gill-rakers obsolete, 
