REPORT OF COMMISSIONER OF FISH AND FISHERIES. [120] 
no perfect specimen of the latter, with the corresponding arms present, 
has been described. It appears to differ from the tentacular arm of C. 
Veranyi D’Orb., which is the only other species sufficiently described to 
be recognized as belonging to this genus. 
Famity HISTIOTEUTHID A, nov. 
Loligopside (pars) D’Orbig., Céphal. Acétab., p. 320, 1835-1848. 
Chiroteuthide (pars) Gray, Catal. Brit. Mus., Moll., vol. i, p. 42, 1849. 
Body small, short, with caudal fins. Mantle united to the neck by three 
movable cartilages. Siphon with neither dorsal bridle nor internal 
valve. Head large. Nuchalcrests absent. Eyes large, not prominent; 
lids free and simple; no sinus. Buccal membrane with six smooth 
lobes; buccal aquiferous openings four. Two brachial openings at 
the bases of the tentacular arms. Six upper arms united by a very 
broad web; suckers in two rows; rings convex, with small, oblique 
apertures. Tentacular arms long, with a well-developed club, bearing 
large central and small marginal suckers; proximal part of club with 
connective suckers and tubercles. Pen broad, short, lanceolate, much 
like that of Loligo. 
HISTIOTEUTHIS D’Orbigny, 1839. 
Histioteuthis Férussac & D’Orbigny, Histoire Naturelle des Céphalopodes Acétabuli- 
féres, p. 226. 
Gray, Catal. British Mus., Moll., vol. i, p. 34, 1849 (description after D’Or- 
bigny). 
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 tlteir 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, alter- 
nating 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 ; butin the 
following species a row of such suckers and tubercles also extends 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 Ommastrephes, Architeuthis, &e. 
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 a long blade. 
