[213] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 423 



is well developed, with a broad marginal membrane along each side, 

 having scolloped 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 XLV, fig. 5) are regularly arranged in 

 four rows. The stalk is long, with a dark purple, fluted summit sur- 

 mounted 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 oi 

 dorsal arms, 86; length of dorsal arms, 41; of second pair, 5C; of third 

 pair, 69; of ventral, 110; of tentacular arms, 180; of club, 17; 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, l mm . 



This species differs widely from C. Bonpla/tidii in the sessile arms, etc. 

 It is much more nearly related to C. Verawyi, from which it differs de- 

 cidedly in the pen; in the suckers; and in the caudal fin, if these parts 

 are correctly described and figured, for the latter. 



BRACHIOTEUTHIS Verrill. 



Trans. Conn. Acad., v, p. 405, Nov., 1881. 



Allied to Chiroteuthis. Differs in having the lateral connective car- 

 tilages of the siphon simple, long-ovate, and the corresponding cartilages 

 of the mantle in the form of simple, linear ridges; a rhombic caudal fin j 

 pen with a simple, linear, anterior portion, suddenly expanding into a 

 much broader, lanceolate, posterior portion, which is naturally infolded j 

 arms slender, the ventral ones not distinctly obliquely compressed j 

 tentacular club without a spoon-like cavity at tip. 



The siphon has a valve and dorsal bridle as in Chiroteuthis, and the 

 suckers, so far as preserved, are similar, but those of the club are more 

 numerous, and their pedicels apparently had a less prominent bulb be- 

 low the sucker. 



In addition to the type-species, this genus probably includes the 

 Chiroteuthis Bowplandii Verany, from the eastern Atlantic. 



C. Bonplandii, as figured, has a very similar pen, but the shape of 

 the caudal fin is different, and the arms are more nearly equal in length, 

 The arms are also represented as having small swellings at the tips, 

 Its tentacular arms are not known. 



