412 
A. E. Verrill — North American Cephalopods. 
thirds as broad as the diameter of the arm, and from close to the 
base of the arm to the distal fourth they are separated by spaces 
mostly equal to about twice their diameter; distally they are less 
numerous. The tentacular club is well developed, with a broad 
marginal membrane along each side, having scalloped or notched 
edges. The club terminates in an ovate, subacute, dark purple, 
hollow organ, with its opening on the outer side of the arm. The 
suckers (Plate LV, fig. 5) are regularly arranged in four rows. The 
stalk is long, with a dark purple, fluted summit, surmounted by a 
very slender pedicel bearing the sucker, which is hooded, with a 
lateral opening ; the horny ring bears several slender, sharp teeth on 
the outer side, the central one being much the longest ;* the soft rim 
of the sucker is covered with many rows of small scales, the inner 
ones with acute tips. The lateral suckers do not alternate with the 
median, but the two arise close together, opposite each other, and in 
line with the teeth on the edge of the marginal membrane. The 
inner surface of the club is specked with brown chromatophores, and 
the marginal membranes are crossed by brown lines, corresponding 
to the notches in their edges. 
Total length, to end of ventral arms, 194 mm ; to end of third pair, 
150; to end of dorsal arms, 127; tail to dorsal mantle edge, 59; to 
base of dorsal ai ms, 86 ; length of dorsal arms, 41 ; of second pair, 56 ; 
of third pair, 69; of ventral, 110; of tentacular arms, 180; of club, 
1 7 ; breadth of club, 5 ; length of caudal fin, 27 ; its greatest breadth, 
24 ; of dorsal arms, 4 ; of third pair, 5 ; of ventral arms, 8 ; of bases 
of tentacular arms, 1*5 ; diameter of largest suckers of lateral arms, 1. 
This species differs widely from C. Bonplandii in the sessile arms, 
etc. It is much more nearly related to C. Vtranyi , from which it 
differs decidedly in the pen; in the suckers; and in the caudal fin, if 
these parts are correctly described and figured, for the latter. 
Desmoteuthis tenera, sp. nov. 
Plate LV, figures 2-2 d . Plate LYI, figure 3. 
Two small, but perfect, specimens of this species were taken in the 
“trawl-wings”f this season, at station 952, in 388 fathoms. 
* The arm, figured on PI. XLYII, figs. 1 - 16 , does not agree with this, and may 
belong to a different species; but the difference in its suckers may be due to injury. 
j- The “trawl-wings,” which were first invented and used by the U. S. Fish Com- 
mission, this summer, consist of fine nets attached to a support extending out from 
each end of the trawl-beam. When in use they are about two feet above the sea-bot- 
tom. They are provided with an interior funnel-shaped net to prevent the escape of 
animals captured. They have been of great value to us for capturing, and retaining in 
