88 U.S. NATIONAL MUSEUM BULLETIN 234 



slight flattening of the stalk which at the midpoint gradually widens. 

 The edges of this form the broad trabeculate membrane on each side 

 of the club. The suckers are quadriserial, those of the hand much 

 larger than the terminal group. There is not much disparity of size 

 in the median suckers which are only slightly larger than those of the 

 outer rows. The large suckers bear 11 or 12 sharp slender teeth on 

 their horny rings. The three or four teeth of the distal side are much 

 longer than the remaining proximal teeth and they are farther apart. 



The buccal membrane has seven points, each of which may bear 

 from one to six small suckers. 



The gladius is long and slender, the rhachis pointed anteriorly and 

 strong, the vane slender, little widened, broadest at the anterior end 

 and thence tapering with straight sides to a fine point. The lateral 

 margins are thickened and more heavily colored. 



The color in alcohol is uniform yellowish brown with numerous 

 small reddish-purple chromatophores on the dorsum, particularly 

 along the midline, on the head, and on the arms. 



Many of the males contained large numbers of spermatophores in 

 the penis. They are very small, only about 6.7 percent of the mantle 

 length, and very slender. A spermatophore from a specimen ML 

 52.0 mm. is shown. 



Measurements and indices of 10 males and of 10 females of Doryteu- 

 this reesi Voss, 1 962, are: 



