[121] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 
The species, so far as known, are brilliantly colored, having occellated 
spots on raised verruce, in addition to the ordinary chromatophores of 
squids. 
The two foreign species, hitherto described, are both from the Medi- 
terranean. 
Histioteuthis Collinsii Verrill. 
Histioteuthis Collinsit Verrill, American Journal of Science, vol. xvii, p. 241, 
March, 1879; vol. xix, p. 290, pl. 14, April, 1880; Trans. Conn. Acad., vol. 
V, p. 234, pls. 22, 27, figs. 3, 4, 5, pl. 37, fig. 5, 1880. 
Tryon, Manual of Conchology, vol. i, p. 166, 1879 (description copied from 
the original one). 
Plate XXIII, Plate XXIV, figures 3-6. 
A large and handsome species, with the broad, thin, dark-brown web 
extending between and nearly to the ends of the six upper arms. The 
outer surface of the head and arms is covered with large, slightly raised 
warts or tubercles, which are dark blue with a whitish center, specked 
with brown; three rows extend along the ventral arms and two along 
the others ; a circle of these surrounds the eyelids, but the edges of the 
eyelids are narrowly bordered with dark brown. Color between the 
warts pale purplish brown, with small, raised dark-brown spots, reddish 
specks, and white granules; web and inner surface of arms uniform 
dark reddish or purplish brown; suckers yellowish white, their pedicels 
specked with brown; tentacular arms light orange-brown. Eyes mu- 
tilated ; their lids form a large, simple, rounded opening. 
Tentacular arms slender, about 2 feet long and expanding near the 
end into a broad, long-oval, sucker-bearing portion or club (Plate 
XXIV, fig. 3), which is bordered by a membrane, widest on the upper 
edge; it ends in a tapering tip, on the back of which there is a thin, 
erest-like membrane or keel, enlarging proximally to its end, where it 
forms a rounded lobe. The most expanded portion of the club bears 
- six rows of suckers, with finely serrate horny rings; the two central 
rows contain much the largest suckers, four or five in each; the more 
central of these two rows contains four suckers, larger than the rest, 
and of these the two median are largest ; outside of these two median 
rows are two regular marginal rows of nearly equal, medium-sized, ser- 
rate suckers on the upper edge ; and along the lower edge of the club 
there is one row of few similar but smaller ones; outside of these there 
is an incomplete alternating row of much smaller marginal ones. On 
the lower edge of the proximal portion of the club, extending from the 
middle backward, there is a row of four small, smooth-edged, unequal 
suckers, alternating with rounded, sessile tubercles that fit into corre- 
sponding suckers on the other arm; a row of similar but smaller suckers 
extends for about 6 inches along the inner surface in the median line 
of the arm, alternating at first singly, and then two by two, with tuber- 
cles, and gradually becoming more distant. The end of the arm, beyond 
a 
