A. E. Verrill — North American Cephalopods. 226 



dorsal arms bear, each, about 30 suckers, exclusive of the small ter- 

 minal ones. 



The 22d sucker of the left ventral arm (Plate XXI, figs. 8, 8a), 

 has a sti'ong, somewhat elliptical rim, with 7 strong and very acute 

 incurved teeth on the outer side, and with the opposite margin on the 

 inner side smootli for more than a third of the circumference. The 

 median tooth on the outer margin is decidedly larger and longer than 

 the others, and abruptly bent inward above its base. It is elongated 

 and gradually tapered to the very acute tip, but thick and channelled 

 externally at its base. To the right and left of this are three similar, 

 but smaller, unequal teeth, all strongly curved inward toward the 

 inner margin, (not convergent to the center). Of these the second 

 from the central tooth, on each side, is the largest, and the third is 

 the smallest. Between the latter and the smooth inner edge there is 

 a small rounded lobe, or blunt tooth. Peduncle broad toward the 

 rim, tapering rapidly to the slender base. Outer sides of rim much 

 higher than inner. Greater diameter, lO'"""; lesser, V""" ; greater 

 interior diameter, 7""'; total height, 13"""; longest tooth, 2-5™"\ 



The exposed portion of the upper mandible is black ; the point is 

 strongly curved, acute, with a smooth cutting edge, separated from 

 the inner lobe by a deep, acute notch ; inner lobe or edge of alas thin, 

 broadly rounded, with a slightly rounded, uneven edge. Length of 

 mandible, 29"^™ ; distance from bottom of notch to tip, 10™"" ; internal 

 breadth between lobes, 8™"'. 



The lining membrane of the palate (Plate XXI, fig. 2), is pale, 

 translucent, covered with rather large, whitish, translucent teeth, vari- 

 able in form and size, but mostly rather broad at base and tapering to 

 an obtuse tip ; some are more slender and acute. No granules were 

 detected on the membrane. 



The odontophore (Plate XXI, figs. 3-7), M^as too much injured to 

 show its general form, but it appeared to resemble that of A. Har- 

 vei/i. The lateral membrane was broad in the middle, translucent, 

 white. No plates outside the lateral teeth could be detected. The 

 teeth all have slender, acute tips. The median teeth have three points 

 of equal length ; the inner lateral ones have two points, the outer one 

 considerably shorter and smaller than the other; the two outer lateral 

 teeth are simple, long, acute, the outermost rather narrower at base 

 and somewhat longer. 



Total length, 109*^^"^ (43 inches) ; length of body and head, 4S-2<^'" 

 (19 inches); length of body from dorsal edge of mantle, 35'56'^^"' (14 

 inches); from ventral edge, 33*16''" (13 inches); of head from edge 



Trans. Conn. Acad., Vol. Y. 29 February, 1880. 



