234 
A. E. Verritt — North American CejAialopods. 
The mouth is surrounded by a broad buccal membrane, with six 
angles or lobes, but without suckers. The body is relatively short, 
with short bilobed caudal fins. The eyes are large, and have distinct 
lids. The dorsal bone or pen is thin, short, lanceolate, and somewhat 
quill-shaped, with long, lateral expansions. 
The species, so far as known, are brilliantly colored, having occel- 
lated spots on raised verrucae, in addition to the ordinary coloration of 
squids. 
The two foreign species, hitherto described, are both from the 
Mediterranean. 
Histioteuthis Collinsii Terrill. 
American Journal of Science, vol. xvii, p. 241, March, 1879. Tryon, Manual of Con- 
chology, i, p. 166. 1879 (description copied from the original). 
Plates XXII and XXVI. 
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 eye- 
lids, but the edges of the eye-lids 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 ; tentacu- 
lar-arms light orange-browu. Eyes mutilated ; their lids form a large 
simple, rounded opening. 
Tentacular-arms slender, about two feet long and expanding near 
the end into a broad, long-oval, sucker-bearing portion or ‘club,’ 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, crest-like membrane 
or keel, enlarging proximallv to its end, where it forms a rounded 
lobe. The most expanded portion of the ‘club’ bears six rows of suck- 
ers, 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, serrate 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 
