io8 Mr. Say on the genus Ocythoe. 
inferior ones, when extended double the length of the body ; 
suckers alternate, becoming gradually smaller towards the 
extremities of the arms, where they are very minute ; mem- 
branes of the anterior arms rounded or suborbicular, extending 
half way to the base of the arms ; periphery occupied by the 
attenuated portion of the arm, which near its extremity passes 
upon the disk of the membrane, and terminates abruptly near 
the base of the expansion ; the membrane is carinately de- 
current on the inferior surface of the arm, near the base of 
which it terminates ; the inferior surface of the membrane is 
brassy, and more numerously maculated than the superior 
surface, which is pale. 
Length from the disk to the tip of the abdomen 2 inches. 
— — — - of the abdomen - 
Greatest breadth ditto - - - i-j^ 
Length of the alated arms - 2^ 
— of those of the opposite side - 5 
Eggs subovate, attached to a delicate pedicle by a small 
basilar tubercle. These fill the involuted spire in the speci- 
men, besides a considerable portion of the body of the shell. 
The suckers are very like those of the O. Cranchii, but the 
arms are much more elongated, and the abdomen longitu- 
dinal with respect to the head. This animal seems to be not 
unfrequently the prey of some of the larger fishes, for in 
addition to the instance above mentioned, Bose informs us 
that in his passage between Europe and America, he found a 
specimen in the stomach of a Coryplicena equiselis, Gmel. but 
very much decomposed: and in the Museum of Mr. Peale, in 
this city, a fine argonauta occurs, which was taken from the 
stomach of a shark. 
