228 A, EF. Verrill—North American Cephalopods. 
of ale, 6:2; breadth of palatine, 17:5. Total length of lower man- 
dible, 23°"; height, mentum to inner end of ale, 22; tip to notch, 
7°8; tip to end of mentum, 8°2; tip to dorsal end of gular, 16; trans- 
verse breadth at alar teeth, 7. (See Plate XXVI). 
The odontophore is similar to that of S. megaptera, but the lateral 
denticles of the median and inner lateral teeth are relatively shorter, 
and these, with some other differences, render it doubtful whether 
this beak can belong to that species. The odontophore is 4”™ broad ; 
the teeth are all sharp, rather slender, pointed, and pale amber- 
color. A slight, smoothish, marginal ridge borders the dentigerous 
zone on each side, but is scarcely divided into distinct plates. The 
median teeth have three sharp, rather slender denticles, the median 
about a third longer than the lateral; the inner lateral teeth have a 
long point, with the acute outer denticle much shorter; the teeth of 
both outer rows are long, considerably incurved, acute, the outer ones 
the more slender. 
Sthenoteuthis pteropus Verrill. 
Ommastrephes pteropus Steenstrup ? 
PuaTE XXVI. 
A large squid, 74°8°" (29°5 inches) long from tail to tip of longest 
sessile arms, similar in size and form to the preceding, and closely 
allied to it, has been sent tome by Mr. G. Brown Goode, who col- 
lected it at Bermuda. It is probably the Ommastrephes pteropus 
of Steenstrup, but I have seen no full description of the latter, and 
figures only of the mandibles. 
Our specimen is entire, except that it has lost the ‘clubs’ of the 
tentacular-arms. It is in fair condition, though considerably con- 
tracted by long preservation in too strong alcohol. The head, 
however, has been pulled out from the mantle to an unnatural extent, 
80 as to increase the total length from 3 to 4°", at least. The ventral 
arms do not show any of the sexual modifications characteristic of the 
male squids, and, therefore, it is doubtless a female. 
Most of the measurements are given in the table with those of S. 
megaptera ; some of the more general are as follows: length from end 
of body to tip of dorsal arms, 69°8°™ (27°5 inches) ; to edge of mantle, 
dorsally, 37°5°" (14°75 inches); to base of dorsal arms, 52°” (20°5 
inches) ; to center of eye, 47°; to lateral insertion of fin, length, 17° 
(6°75 inches) ; to outer angle of fin, along posterior edge, 18°4°™ (7°25 
inches); breadth of fins transversely, 28°5°" (11°25 inches); outer 
b 
angle to lateral insertion, along front edge, 14°" (5°5 inches); between 
