! 
% ICHTHYOLOGICAL COLLECTIONS OF THE ALBATROSS. 417 
occur in a single convex series on front of vomer, and but three or four form a line 
on palatines; in others, we find an irregular double series or a narrow band on each 
of these bones. The teeth are always strong, and are probably in adult specimens 
never entirely wanting on either vomer or palatines. Longitudinal diameter of 
orbit 34 in head. Interorbital space very narrow, shallowly concave, entirely 
occupied by the supraocular canals, which unite in a single pore opposite posterior 
margin of orbit. Leastinterocular width two-thirds pupil. Premaxillary processes 
projecting but little beyond the profile. Nasal spines very small. Both pairs of 
nostrils in short tubes, the posterior situated on anterior orbital rim. 
Occiput with two very inconspicuous low rounded ridges, appreciated with diffi- 
culty, and sometimes entirely wanting. No trace of the occipital spine which is seen 
in Massachusetts specimens of Artedicllus, nor of the conical protuberance described 
and figured by Collett. Barbels numerous. Maxillary barbel large and conspicuous, 
sometimes simple, more often compound, furnished with from one to four short 
lateral branches. A well-developed supraocular cirrus, and a pair of cirri on poste- 
rior margin of occiput, the latter occupying the position of occipital spines. A 
short cirrus near base of opercular flap, and two or three on preopercle, two of which 
are usually at base of the preopercular spines. ‘Two cirri on anterior part of trunk, 
one immediately above base of pectorals, the other half way between lateral line 
and front of spinous dorsal. Sometimes additional cirri above front of lateral line 
and on lower margin of subocular ring. A series of four or five very short cirri 
erosses the eye horizontally immediately above the pupil. Gill-membranes broadly 
united, joined to the isthmus anteriorly, with a wide free margin. Gills 34, no slit or 
pore behind last arch. Preopercular spines as in 4. uncinatus, the upper one without 
smaller basal spine. 
“Dorsal fins well separated, low in females, extraordinarily developed in males, the 
spinous dorsal in the latter well overlapping front of second dorsal and having all 
of the spines exserted, the median ones for half their length. These exserted spines 
have their free portions narrowly margined with membrane, which widens at 
their tips to form a cutaneous flap. Soft dorsal also somewhat elevated in males. 
Ventral fins reaching half way to vent in females, about three-fourths this distance 
in males. 
Dorsal vit or vitI-12 or 13; anal 11 or 12; pectoral 23 (22 to 24); ventral 1, 3; 
caudal with 9 divided rays (not 11 as in C. wncinatus); lateral line 24 (22 to 26). 
A series of five wide mucous slits running along lower edge of suborbital ring and 
‘across cheeks. Poresof lateral line minute, at the ends of short downwardly-directed 
branches, the main line opening in a large slit like pore at base of caudal. 
Color much as in A. wncinatus, the lower parts whitish, unmarked, the dorsal region 
(of the trunk crossed by three wide dark bars, which often in adults break up ihto 
: spots separated by vermiculations of the lighter ground color. One of these bars is 
| below the spinous dorsal, running downward and forward to base of pectorals; the 
‘second is under soft dorsal, the third on caudal peduncle. Top and sides of head 
;generally dark, with fine light dots or vermiculations. A light streak sometimes 
| present, extending from preopercular spine forward and inward, meeting its fellow 
iimmediately behind eyes. This V-shaped mark is usually absent or inconspicuous, 
|but is sometimes in young specimens formed of bright silvery-white pigment. 
| Other silvery spots or blotches may occur on the lighter intervals of the back or 
‘sides. Pectorals, dorsal, and caudal cross-banded; a black blotch at base of upper 
and one at base of lower pectoral rays. Tips of elongate dorsal spines of the male 
\black. Ventrals and anal unmarked. 
Taken abundantly at stations 3216, 3219, 3222, 3228, 3251, 3252, 3254, 3259, 3265, 3267, 
3272, 3273, 3278, 3279, 3280, 8281, 3282, 3285, 3293, 3294, 8302, 3306, and 3323, at depths of 
\from 8to61 fathoms. The above stations are in Bristol Bay, excepting 3216 (south of 
‘Sannak Island) and 3323 (north of Unalaska Island). 
F. B. 93——27 
