282 



BULLETIN OF THE BUREAU OF FISHERIES. 



the shortest, usually a very little longer than the mantle in adult specimens and about a third as long a, 

 the dorsal pair; all the arms smooth externally, without keels or carinations. Umbrella thin, delicates 

 hyaline; but little developed between the ventral arms, between these and the third pair, and between 

 the latter and the second pair; very extensive between the four dorsal arms, where it attains its maxi- 

 mum, connecting the first and second arm on each side for nearly half their length, but somewhat more 

 deeply cleft between the dorsal arms; continuous along the dorsal margin of the second pair as a delicate 

 web constantly narrowing distad, but along both borders of the dorsal arms it maintains itself as a promi- 



FiG. 8.- — Tremoctopurviolaceus, ventral view of large 

 female [221], from station 3930, X 2. Drawn by 

 R. L. Hudson. 



Fig. 9. — Tremoctopus liolaceus, dorsal view of speci- 

 men [221]. shown in figure 8, X 2. Drawn by R. L. 

 Hudson. 



nent veliform web, ofttimes even broader than the arms themselves, only the filiform extremities of the 

 arm3 remaining free. In most adult specimens these tips and even the more distal portions of the 

 webbed regions are abruptly decollated. 



Suckers small, regularly alternating in two very widely spaced rows, save the basal three which are 

 in a single row and notably larger than any of the remainder except those on the ventral arms which are 

 greatly elevated, cylindrical in shape, much fewer in number, and the rows less widely interspaced. 

 Except at the base the suckers of the four dorsal arms are numerous, much reduced in size, little elevated, 

 and with very small openings; they soon become entirely rudimentary and suddenly crowded laterally 



