366 



A. K. Verrill — North American Cejihalopods. 



AllopOSUS mollis Verrill. 



Amer. Jour. Sci., xx, p. 394, Nov., 1880; Proc. Nat. Mus., iii, p. 363, 1880; Bulle- 

 tin Mus. Comp. Zool., viii, p. 113, pi. 4, fig. 4; pi. 8, figs. l-2a, March, 1881. 



Plate L, figs. 1, \a, 2, 2a. Plate LI, fig. 4. 



Body stout, oviite, very soft and flabLy. Head large, as broad as 

 the body ; eyes large, their openings small. Arms rather stout, not 

 very long, webbed nearly to the ends, the dorsal much longer than 

 the ventral arms; suckers large, simple, in two alternating rows. 

 Color deep purplish brown, with a more or less distinctly spotted 

 appearance. Total length of a medium sized specimen, 160'"'" ; of body, 

 to base of arms, 90"""; of mantle, beneath, 50""" ; of dorsal arms, 70""" ; 

 breadth of body, 70""". Other specimens are about one-third larger. 

 The sexes scarcely differ in size. 



One mature, detached, hectocotylized arm (Plate LI, fig. 4) was 

 taken November 16. This has two rows of large, six or seven-lobed 

 suckers, a very long fringe, composed of thin, fiat, lacerate processes, 

 along each side ; the terminal process is fusiform, acute, and loosely 

 covered with a thin, translucent membrane, beneath which the inner 

 surface, bearing chromatophores, can be seen. Length of this arm, 

 200""'; its breadth, 20'""'; length of terminal process, 30"""; its diame- 

 ter, 7'"'"; diameter of largest suckers, 6'"'"; length of fringe, 15""". 



Taken by the "Fish Hawk," at Stations 880, 892, 893, 895, about 

 100 to 115 miles south of Newport, R. L, in 225 to 487 fathoms. 

 Also, ofi"the mouth of Chesapeake Bay, at Station 898, November 10, 

 in 300 fathoms, by Lieut. Z. L. Tanner. 



Specimens examined. 



