A, E. Verrili— North American Cephalopods. 233 
end; the terminal portion forms a short, hollow hood, formed by the 
infolding of the margin, and marked by slender, divergent, raised lines, 
stronger laterally, and with a dorsal keel. The central rib begins at 
the anterior end, increases in size to the middle region, then narrows 
to the slender part, where it forms a slender, prominent rib, only visible 
dorsally, and then becoming confluent with the lateral ribs, extends 
as a sharp keel to the end. The lateral ribs commence at about °75 
inch from the anterior end, and each at first consists of three riblets ; 
farther back another appears on the outside margin but is separated 
only by a slender groove, and toward the slender part of the pen they 
all coalesce into a single rib on each side, which nearly meet in the 
middle line ventrally, where they are separated by a slender groove, 
which disappears farther on. ‘Total length of pen, 349"™ (13°75 inches) ; 
greatest breadth, 22°5"™ (-90 inch); length of posterior cone or hood, 
‘9"™ (35 inch); breadth of posterior expansion, 15™". 
This specimen was collected at Bermuda, by Mr. G. Brown Goode, 
and now belongs to the Museum of Wesleyan University, Middletown, 
Conn. Mr. Goode informs me that it was picked up on the north 
shore of the island, in December, 1876, and that it was regarded by 
the inhabitants as a novelty or great rarity, and was noticed as such 
in the local newspapers. 
Histioteuthis D’Orbigny, 1839. 
Histioteuthis Férussac & D’Orbigny, Histoire naturelle des Céphalopodes Acétabu- 
liferes, p. 226. 
This genus is remarkable for having the six upper, sessile arms 
united together nearly to their tips by a thin elastic membrane or web. 
The ventral arms are also united together for a part of their length 
and their common web is joined to the great web, in the median line, 
by a bridle-like membrane. The tentacular-arms are very long, and 
have expanded clubs, with a broad dorsal keel. As in Architeuthis 
and Sthenoteuthis, they are furnished with a series of small smooth- 
rimmed suckers, alternating with tubercles, on the proximal part of 
the club and adjacent part of the arm, for the purpose of uniting the 
arms together, at will, but in the following species a row of such 
suckers and tubercles also extend along one side of the club, opposite 
part of the large central suckers. The large suckers are serrated, and 
alternate in two rows; two rows of large marginal suckers exist on 
one side and two rows of much smaller ones on the other. At the 
extreme tip of the arm there is a cluster of small smooth-edged 
suckers, as in Architeuthis. 
TRANS. CONN. ACAD., VOL. V. 30 FEBRUARY, 1880, 
