MUSEUM OF COMPARATIVE ZOOLOGY. Ill 



Length of body, above, 18 mm.; of body and head, 27 mm.; breadth of 

 body, 15 mm.; length of insertion of fin, 12 mm.; its greatest length, front to 

 back edge, 16 mm.; height, base to tip, 9 mm.; length of dorsal arms, 15 mm.; 

 2d pair, 17 mm.; 3d pair, 18 mm.: 4th pair, 17 mm.; of tentacular arms, 

 28 mm.; of club, 12 mm.; diameter of largest stickers of lateral arms, 60 mm.; 

 of larscest suckers of tentacular clubs, 12 mm. 



Station 148, in 208 fathoms, off St. Kitts, 1878-79. One female. 



Heteroteuthis tenera Veerill. 



Amer. Jour. Sci., XX., p. 392, 1880; Bulletin Mus. Comp. Zool., XIII., p. 103, 

 PI. 3, figs. 5-5 b; PI. 7, figs. 2-2 d, 3-3 b, 1881 ; Trans. Conn. Acad., V., p. 357, 

 PI. 46, figs. 2-2 d, 3-3 b, PI. 47, figs. 5-5 b, 1881 ; Pveport U. S. Fish Cora, for 

 1879, [p. 175,] PI. 33, PI. 34, fig. 1, 1882. 



One specimen (9); ^om Station 148, in 208 fathoms, off St. Kitts. 



Octopus tuberculatus Blainv. i 



A species with long arms, a short basal web, and peculiar branched cirri 

 above the eyes and scattered over the back. Probably young. 



The body is moderately large, oblonw, swollen below, well rounded behind. 

 Head about as broad as the body, with large prominent eyes. Upper surface 

 of the body and head thickly covered with rather small, low warts, which also 

 extend along the dorsal sides of the arms and on the basal web ; scattered over 

 the upper surface of the body and head are j^rominent cirri, some of which are 

 simple and tapered, while others are divided into three to five digitate lobes or 

 branches ; of these, two are situated in the median dorsal line, four form a 

 quadrangle on the dorsal surface of the body, and two are situated on each side 

 of the body in line with the eyes ; on the head, one is situated in the median 

 dorsal line between the bases of the dorsal arms ; one much larger and more 

 complicated than the others is situated above each eye; this may have seven or 

 eight slender bi'anches ; the eyelids are covered with prominent warts ; the 

 lower surface of the body is paler and smoother, with only minute inconspicu- 

 ous warts, more evident anteriorly. • Siphon moderately large, strongly tapered. 

 The arms are long and rather slender, tapering to slender tips ; they are sub- 

 equal in size and length, the ventral ones a little smaller and shorter ; the 

 suckers are rather small, the two rows well apart; the two basal ones are much 

 smaller than the succeeding ones and stand nearly in the median line. The 

 basal web extends about one third the length of the arms ; the arms are bor- 

 dered for some distance by a thin, narrow, marginal membrane on each side. 

 The hectocotylized arm is but little shorter than its mate, and tapers to an acute 

 but modified tip ; along the border of the arm there is an incurved marginal 

 groove formed by the narrow, inflpxed marginal membrane, which terminates 



