[121] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 331 



The species, so far as known, are brilliantly colored, having occellated 

 spots on raised verrucae, in addition to the ordinary chromatophores of 

 squids. 



The two foreign species, hitherto described, are both from the Medi- 

 terranean. 



Histioteuthis Collinsii Verrill. 



Histioieuthis Collinsii Verrill, American Jo roal of Science, vol. xvii, 



March. 1879 ; vol. xix, p. 290, pi. 14, April, 1880; Trans. Conn. Acad.,, vol. 

 v. p. 234, pis. 22, 27, figs. 3, ■!. 5, pi. 37, fig. 5. ' 

 Tryon, Manual of Conchology, vol. i, p. 166, 1879 (descrii>tion 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 anus 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 L! 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 bade of which there is a thin, 

 crest-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, medinm-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 



