378 
A. E. Verrill- — North American Cephalopoda. 
those of the third pair are about 12 ram shorter than those of the 
second ; the ventral pair about G mm shorter than those of the third. 
In our type-specimen, all the arms on the right side are somewhat 
shorter than those on the left, and the web between the first and 
second arms is narrower, due, perhaps, to recovery from an injury. 
The web between the arms, except ventrally, is of about equal width, 
and scarcely more than one-fourth the length of the arms, measuring 
from the beak. Between the ventral arms the web is about half as 
wide as between the lateral. 
The suckers are moderately large, decidedly prominent, alternating 
in two regular rows, except close to the mouth, where a few stand 
nearly in a single line; about fourteen to sixteen are situated on the 
part of the arms included within the interbrachial web. The whole 
number of suckers on one arm is upwards of seventy. 
Color of one alcoholic specimen is deep purplish brown, due to very 
numerous crowded minute specks; eyelids, whitish. The front 
border of the mantle, beneath, and the base of the siphon and adja- 
cent parts are white ; end of siphon, brown. Lower side of head and 
arms lighter than the dorsal side. 
Total length, from posterior end of body to tip of arms, of 1st pair, 
158 mm ; 2d pair, 160 mm ; 3d pair, 146 mm ; 4th pair, 133 mm ; to web be- 
tween dorsal arms, 82 mm ; between ventral arms, 63 ram ; to edge of 
mantle, beneath, 30 mm ; to center of eye, 39 mm . Breadth of body, 
31 nim ; of head across eyes, 30 ,nm ; breadth of arms, at base, 5'5 ram ; 
diameter of largest suckers, 2'5 mm ; length of arms beyond web, 1st 
pair, 76 ram ; 2d pair, 82 mm ; 3d pair, 71 mm ; 4th pair, 69 mm . 
Two specimens of this species, both females, have been obtained. 
The first was from Le Have Bank, oft* Nova Scotia, in 120 fathoms, 
taken by Captain John Mclnnis and crew, of the schooner “ M. II. 
Perkins,” October, 1879; the second was taken by Captain David 
Campbell and crew, of the schooner “ Admiral,” (lot 590), near the 
Grand Bank, N. lat. 44° 07' ; W. long. 52° 40', in 200 fathoms, De- 
cember, 1879. 
This species resembles O. Gronlandicus , of which only the males 
appear to have been described, and it may eventually prove to be 
the female of that species. 
This species is easily distinguished from O. Bairdii , by its more 
elongated body, its much longer and more slender and tapered arms, 
with shorter webs ; by the absence of the large, rough, pointed pa- 
pilla, or cirrus, above the eye, and by its general smoothness. The 
white color of the underside of the neck, siphon and mantle-border 
also appears to be characteristic. 
