110 BULLETIN OF THE 
some of them very large ; with subcentral groups of small, slender-pedicelled 
suckers (or hooks) ; with marginal series of small suckers ; and with several 
rows of minute suckers covering the prolonged distal face of the club. Con- 
nective cartilages, on the base of the siphon, long-ovate ; corresponding cartilages 
of thé mantle simple longitudinal ridges. Radula with only five rows of teeth; 
median tooth tridentate; inner la^ vals absent; outer ones simple, acute. 
Cheloteuthis rapax VERRILL. 
Plate III. Figs. 1-10 
Head large, with very large eyes; pupils round. The body is rather short 
and thick, tapering rapidly backward. The arms are long, and taper to 
slender tips; the dorsal ones are smaller and shorter than the others; the 
lateral and ventral pairs are nearly equal in length, and about as long as the 
mantle; the ventral arms are somewhat more slender than the lateral ones. 
All the arms appear to have borne-slender-pedicelled, horny claws or hooks, 
with strongly incurved points, but only the fleshy parts of these are left, in most 
cases, and all are gone from the tips of the arms, On the ventral arms these 
hooks were smaller, and in four rows ; the fleshy portion of these consists of a 
small rounded head, with lateral expansions on each side, and running up, on 
the outer side, into an incurved hood, or sheath for the horny claw. On the 
other arms the hooks were in two rows only, but they were much larger, though 
of similar form ; in a few cases, on the lateral arms, the horny claws are left. 
These are strongly compressed, and deeply imbedded in the muscular sheath, 
so that only the sharp, strongly incurved point projects (Plate LIT. figs. 1, 1°). 
The tentacular arms (Fig. 1) are long and strong, their length being more 
than twice that of the sessile arms. The club is rather stout, long, decidedly 
expanded, and has an elevated, crest-like keel on the distal half of its outer 
surface ; this keel rises abruptly, at its origin, and is colored on the outer side, 
but white on the face next to the inner surface of the club. The club is 
broadest near its base, the distal third is narrow and the tip rounded, The 
armature is remarkable; in the middle line there is a row of six medium- 
sized hooks (a/^ followed by two much larger ones situated near the middle; 
these have lost their horny claws (Fig. 1, a, a”) ; series of minute, slénder-pedi- 
celled suckers run along the club, either side of the median line, and beyond 
the large hooks these rows unite and entirely cover the face of the distal third 
of the club, there forming about eight rows (Fig. 1, d) ; at the tip there is a cir- 
cular group of minute suckers (d^; toward the base of the club, the lower 
edge is abruptly expanded and bears a row of five peculiar suckers (Fig. 1, e), 
having very thick basal processes, which are appressed and directed toward the 
central line of the club, bearing the suckers on their inner ends, attached by 
short pedicels ; beyond these there is a triangular marginal group of slender- 
pedicelled suckers (Fig. 1, c) of about the same size ; other rows of minute pedi- 
celled suekers (or hooks) occupjed the subcentral area, between the marginal 
ones and the central line, which is indicated by a strong white cord ; the op- 
