404 A. E. Verrill—Mollusca of the New England Coast, 
Cirrhoteuthis plena Verrill, sp. nov. 
PLATE XLII, FIGURE 3. 
Body broad, thick and short, broadly rounded posteriorly, with the 
lateral fins inserted well forward, just behind the eyes, their front 
edges a little behind the gill-opening. The fins are large, thin and 
broad, with the edges nearly parallel to near the end, which is 
broadly rounded. The head is as broad as the body and very short. 
The eyes are relatively small, wide apart, situated in line with the 
siphon transversely ; the lids, in alcohol, are slightly thickened and 
surround a small elliptical opening. The siphon-tube is small, but: 
prominent and well-developed, expanding to the base. The gill- 
opening is small and simple, in breadth only slightly exceeding the 
breadth of the basal part of the siphon. 
The arms are long, rather stout, the four upper ones decidedly 
longer than the four lower, the ventral ones shortest. They are 
united by a thick, strong web, which, on the upper side between the 
dorsal arms, extends about two-thirds the length of the arms. It 
decreases in width between the lateral arms. Between the third and 
fourth pairs it is about one-half the length of the ventral arms, and 
between the ventrals about one-third their length. The suckers are 
rather large for the group, largest at about the basal third, those near 
the mouth becoming very small. They are arranged rather close 
together in a single linear series, but sometimes show a slight tendency 
to become alternate at the basal third of the lateral arms; they are 
usually separated along the center of the arms by spaces about equal 
to their own diameter. There are about fifty-five suckers on the 
dorsal arms, of which about thirty occupy the portion within the 
web. The tips of the arms, when perfect, are rapidly tapered, rather 
thin and not much elongated, and bear fifteen to twenty small suck- 
ers, which are here nearly in contact. The cirri are rather short, 
tapered, acute, and usually stand nearly opposite the suckers, forming 
a row on each side, along the inner face of the arm. 
The color of the body and external surface of the web, in alcohol, 
is a yellowish flesh-color, with a somewhat translucent, gelatinous 
appearance, with the darker internal organs showing through more 
or less distinctly. The fins are deep brown, darker towards the tips, 
The inner surfaces of the arms and web with the cirri, are dark 
purplish brown, while the suckers are dull brownish yellow. 
Total length, 185"™ ; length of body to gill-opening, 57™™ ; length 
to base of ventral arms, 70""; breadth of body es Haste of 
