ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 423 
The principal features of this species are the very broad, flat head, the short, wide 
snout, the projecting lower jaw, the two pairs of cephalic tubercles provided with 
filaments, the verrucose head, the very short preopercular spines, the large pore 
behind the last gill, the presence of circular spinous plates above the lateral line 
and prickles below it. 
Head and anterior part of body broad, depressed, the depth of head at occiput 
1} in its greatest width, its length 2} in body. Body tapering to a slender caudal 
peduncle, whose least height is equal to diameter of eye. Depth of body 4 to 4% in 
length. Interorbital space very wide, shallowly concave, its width 1} times diameter 
of orbit, and 4 to 44 in head. The low supraocular ridge ends in a blunt tubercle 
above hinder margin of eye, which grows higher with age. Occiput depressed, 
bounded by two low ridges which converge very strongly toward the nape, where 
they curve out again in low, rounded tubercles. The inclosed depressed area is 
twice as wide anteriorly as it is at the narrowest posterior part. A strong temporal 
ridge, less distinct in young specimens. Nasal spines very small. Mouth wide, 
transverse, oblique, the maxillary reaching vertical from hinder edge of pupil, 24 in 
head. Mandible with its triangular tip protruding well beyond upper jaw in adults, 
the jaws nearly equal in young. Length of snout equal to interorbital width. 
Bands of short cardiform teeth on the jaws, and a broad patch on vomer; none on 
palatines. A conspicuous pore behind last gill. Gill-membranes almost wholly 
joined to the isthmus, the free border scarcely noticeable, its width less than one-third 
the diameter of the small pupil. Eye small, shorter than snout, 5} to6}in head. Pre- 
opercle with two short strong spines diverging backward, and a strong concealed 
point below directed downward and forward. Upper preopercular spine about equal 
to eye, but little longer than the lower, reaching one-third the distance from its base 
to the tip of the opercular flap. Opercle with a well-marked longitudinal rib, ending 
in asharp point. Scapular and subopercular spines present. Entire top and sides 
of head, nape, and anterior dorsal region covered with small dermal warts. Supra- 
orbital and occipital tubercles with short filaments. 
Space above the lateral line with an irregular series or double series of large round 
spinous tubercles. A few scattered plates on sides below the lateral line. Axil 
smooth. Plates of lateral line concealed in skin. 
Spinous dorsal low, its longest spine 14 in second dorsal, 3 in head. In some speci- 
mens a single line of small sharp tubercles, resembling spines, extends along each 
side of the rays of the second dorsal. The two dorsals are separated by a narrow 
space. Pectorals large, reaching front of anal, the lower rays much thickened. 
Caudal rounded. Ventrals reaching two-thirds distance to vent. Dorsal 1x-14; 
anal 13; pectoral 18; ventral 1, 3; lateral line 36-40. Length 6-11 inches. 
Color: Dark olive-brown above, with faint traces of blackish bars; sides spotted 
or marbled with whitish. Belly, and lower parts generally, white. A blackish 
blotch on cheeks, one on opercle, and a third on front of mandible. Pectoral rays 
dusky, the membrane whitish, the fins crossed by three or four wavy black bars, 
which sometimes join, inclosing oblong or roundish white areas. Spinous dorsal not 
banded, the dusky and translucent areas variously arranged. Soft dorsal, with 
five oblique broad dusky bars. Anal with four bars, sometimes uniting to inclose 
white spots. Caudal similar to pectoral and anal. Brilliantly colored males are 
largely black on sides and below, with many large, rounded, partially-confluent, 
pearly-white spots. 
Thirteen specimens from the Nushagak River, near its mouth; one from Herendeen 
Bay, on the northern side of the Alaskan Peninsula. 
65. Acanthocottus profundorum sp. nov. (Plate 27.) 
A deep-sea form, allied to A. bathybius Giinther, from which it differs in the 
obsolescence of the occipital and nasal spines, the absence of the accessory spine 
in advance of upper preopercular spine, and in the more numerous rays of dorsal 
and anal fins. From above, the head appears smooth and evenly rounded, without 
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