A. JE. Verrill — North American Cephalopoda. 
351 
Measurements of Rossia megaptera. 
Breadth of head, across eyes, 
Breadth of fins, antero-posteriorly, 
Length of fins, base to outer edge, 
Diameter of eyes, 
Diameter of larger suckers of lateral arms 
Diameter of larger suckers of club, 
Breadth of chib, 
Length of club, 
( Continued .) 
Inches. 
Millimeters. 
1-40 
36 
1-08 
27 
•85 
22 
•75 
19 
•06 
1-5 
•01 
•25 
•16 
4 
•95 
24 
Off* the southern const of Newfoundland, in 150 fathoms, Capt. K. 
Markuson and crew, schooner “Notice,” June, 1880. 
This species is remarkable for the great size of the tins and eyes, and 
for the length of the tentacular arms. It appears to be a species spec- 
ially adapted for inhabiting greater depths than the species hitherto 
discovered. It has the same soft, flabby integument observed in Octo- 
pus lentils and Stauroteuthis syrtensis , found at similar depths. 
But the looseness of the skin may be due in part to the condition of 
the specimens when preserved. The suckers on the tentacular arms 
are remarkably small. 
Rossia Hyattl Verrill. 
Verrill, Amer. Journ. Sci., vol. xvi, p. ‘208, 1878. 
Tryon, Man. Conch., i. p. 160, 1879. (Description compiled from preceding). 
Verrill, Amer. Journ. Sci., xix, p. 291, pi. 15, figs. 1 and 2. April, 1880. 
Plate XXVII, figs. 8,9. Plate XXX, fig. 1. Plate XXXI, figs. 1, 2. Plate 
XLVI, fig. 5. 
Body subcylindrical, usually broader posteriorly ; in preserved 
specimens, variable in form according to contraction. Dorsal sur- 
face covered with small, conical, scattered, whitish papillae, which are 
also found on the upper and lateral surfaces of the head and bases of 
the arms ; those around the eyes largest ; one on the mantle, in the 
median line, near the front edge, is often elongated. Front border of 
mantle sinuous, slightly advancing in the middle, above. Fins moder- 
ately large, nearly semicircular, attached from the posterior end for 
about four-fifths the whole length, the front end having a small, round- 
ed free lobe. The distance from the posterior junction of the fins to 
end of body is less than that from the anterior junction to edge of 
mantle, the center of the fin being at about the middle of the body. 
Siphon elongated, conical, with a small opening. Head depressed, 
more than half the length of the body. Eyes large, the lower eyelid 
prominent, but not much thickened. Sessile arms short, united at 
