[ 23 ] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 
SPECIAL DESCRIPTIONS OF THE ATLANTIC COAST SPECIES. 
Architeuthis Steenstrup. 
Architeuthus Steenstrup, Oplysninger om Atlanter, Collossale Bheksprutter, 
Forhandlinger Skand. Naturf., 1856, yol. vii, p. 182, Christiana, 1857 (name 
proposed, hut no generic characters given). 
Architeuthis Harting, Verb. K. Akad., Woten., Natuurk., IX, 1860. 
Megaloteuthis Kent, Proc. Zool. Soc., London, 1874, p. 178 (no generic charac¬ 
ters given). 
Size large. Body stout, nearly round, swollen in the middle. Caudal 
fin, in the typical species, relatively small, sagittate. Head large, 
short. Eyes very large, oblong-ovate, with well-developed lids and an¬ 
terior sinus. Sessile arms stout, their suckers large, very oblique, with 
the edges of the horny rings strongly serrate, especially on the outer 
margin. The suckers of the basal half of all the arms, except the ven¬ 
tral ones, differ from the distal ones iu being denticulated all around 
and less oblique* The margin has around it a free-edged membrane, 
which closely surrounds the denticles wheu the sucker is used, and 
allows a vacuum to be produced. Tentacular arms very long and slender, 
in extension, the proximal part of the club furnished with an irregular 
group of small, smooth-rimmed suckers, intermingled with rounded 
tubercles on each arm, the suckers on one arm corresponding with the 
tubercles of the other, so that by them the two arms may be firmly 
attached together without injury, and thus used in concert ; other simi¬ 
lar suckers and tubercles, doubtless for the same use, are distautly 
scattered along the slender part of these arms, one sucker and one 
tubercle occurring near together. A small cluster of smooth-edged 
suckers also occurs at the tips. The internal shell (imperfectly known 
in one species only) has a thin and very broad, lanceolate posterior 
blade, expanding forward from the end, with divergent ribs. 
This genus is closely allied to Ommastreplies , from which it may be 
best distinguished by the presence of the peculiar connective suckers 
and tubercles for uniting the tentacular arms together. 
Architeuthis Harveyi Verrill.—(Harvey’s Giant Squid.) 
Megaloteuthis Harveyi Kent, Proc. Zool. Soc. London, 1874, p. 178. 
Architeuthis monachus Verrill, Amer. Journal Science, vol. ix, pp. 124, 177, pi. 
2, 3, 4, 1875; vol. xii, p. 236, 1876. American Naturalist, vol. ix, pp. 
22, 78, figs. 1-6, 10, 1875 (? non Steenstrup). 
Ommastreplies Harveyi Kent, Proc. Zool. Soc. London, 1874, p. 492. 
Ommastrephes ( Architeuthis ) monachus Tryon, Manual of Conchology, vol. i, p. 
184, pi. 83, fig. 379, pi. 84, figs. 380-385, 1879. (Descriptions compiled and 
figures copied from the papers by A. E. V.) 
Architeuthis Harveyi Verrill, Trans. Conn. Acad., vol. v, pp. 197, 259, pis. 13- 
16 a, 26, 1879-80. Amer. Journal Science, vol. xix, pp. 284, 287, pi. 13, 
1880. 
