A. E. YerrUl — Earth American Cephalopods. 
407 
suckers not well preserved, but all appear to have been alike in form; 
pedicels long and slender, with a smooth and not very large swelling 
below the base of the sucker; the suckers have lost their horny rims, 
but the sheaths are shaped much like those of C. lacertosa , the distal 
portion being hood-shaped, with a lateral opening, while the basal part 
is swollen laterally. The tip of the club is simple, without any such 
spoon-shaped appendage as is found iu the preceding species. Buccal 
membrane large, with a free thin edge, which scarcely forms angles. 
Pen (PI. LY, fig. 3a) has a narrow, linear anterior portion, consist- 
ing of more than half its length, decreasing in width backward, then 
suddenly expanding into the posterior portion, which is broad and 
thin, and infolded, so as to form a large, compressed posterior cavity ; 
the anterior portion is concave beneath, with no midrib, the edges 
excurved and slightly thickened ; when spread out and flattened the 
posterior portion has a lanceolate form, rather abruptly widening 
anteriorly and very gradually tapering backward, with a double 
midrib, and some delicate lines parallel to it, while the lateral expan- 
sions are very thin and delicate. Color of body mostly destroyed, in 
the typical specimens, but small, light purplish brown chromato- 
phores are uniformly scattered over the parts best preserved; this 
is also the case on the head, siphon, and outer surfaces of the arms, 
where the skin is well preserved ; scattered spots also occur on the 
inner surfaces, between the suckers. 
A larger specimen (station 994), which has lost its head and pen, 
and, therefore, cannot be positively identified, has a much darker 
color. It is dark purplish brown over the whole body. 
The male has the mantle 62 n,m long; length of caudal fin, 31; 
its breadth, 36 ; end of tail to base of arms, 85 ; length of dorsal 
arms, 26; of second pair. 48; of third pair, 45 + (tips gone); of fourth 
pair, 35; of tentacular arms, 118; of sucker-bearing portion of club, 
16; breadth of tentacular arms, 2 ; of club, 4; of lateral arms, at 
base, 3*5; of ventral arms, 3 ; diameter of eye-ball, 8 ; of the largest 
suckers of lateral arms, 1*2; length of pen, 62; of anterior, narrow 
portion, 38 ; its breadth anteriorly, where widest, 2 ; where narrow- 
est, T25 ; length of posterior portion, 24 ; its breadth, 8 mm . 
The teeth of the odontophore (PI. LV, fig. 3 1>) form seven rows ; 
the median ones have a large, acute central, and two small, lateral 
denticles; the inner lateral teeth have a large, acute, inner denticle 
and a very small outer one; the next to the outer lateral teeth are 
somewhat stouter than the outermost, which are slender, strongly 
curved, and very acute; no marginal plates were observable. 
