MUSEUM OF COMPARATIVE ZOOLOGY. 107 
smaller, sharp denticles ; outside of the horny rim the marginal membrane is 
covered with a regular circle of minute horny plates. 
The transverse breadth of this arm-fragment at the thickest end is 9 mm.; 
across internal face, with the lateral membranes extended, 15 mm.; length of 
transverse muscular bands of the marginal membranes, 4 mm.; diameter of the 
largest suckers, 4 mm.; height of cups, 5 mm. Number of larger teeth on the 
sucker-rings, 14 to 17; of smaller ones on the inner edge of the rim, 8 to 10. 
Cheiroteuthis lacertosa VERRILL. 
Trans. Conn. Acad., V., p. 408, Pl. 56, figs. 1-1 f, 1881; Report U. S. Fish Commis- 
sion for 1879, [pp. 119, 209,] Pl. 46, figs. 1-1f, 1882. 
A specimen of this rare species, somewhat smaller than the original type- 
specimen, was obtained. It has both tentacular arms with the clubs in good 
condition. It agrees closely with the type-specimen, already described in de- 
tail, and figured by me, in all its essential characters. In color it differs only 
in being somewhat paler, and in having rather distinct pale, or whitish, small 
round spots scattered over the dorsal surface. The row of dark spots along 
each of the ventral arms is very distinct. 
Measurements of Cheiroteuthis lacertosa. 
Length of body to dorsal edge of mantle, . : My rash 
Breadth of body, . ; . : : é ; ; Ly ee 
Length of caudal fin, ‘ : : : z 6 b4O G 
Wianerere breadth across fins, aaak : F : Bid): 
Length of head from dorsal cartilage to base of sabe ‘1 a OOo te 
Breadth of head at eyes, : : ; ‘ ; Lb 
Length of dorsal arms, . . : ; , : s9g7GOn |< 
‘ ch “y 2d pair, . - : : : don 
6 es or 3d pair, ; 3 ; : eo Omes 
23 ff 4th pair, . : : ; : 153“ 
Diameter of dorsal arms at base, 5 ‘ : : : Aes 
He se a A Ra 218 I oN PN , , by 
a ‘ ee cog pair, ; ‘ ; 5.5 © 
* : ef “= 4th pair, . : ; a 
Length of tentacular arm, . : ; , : : <0 GG0 a 
Length of club, . ; fF d ; : : ‘ G0ee 
Its breadth, in the middle : ee ae 
Diameter of largest suckers of lateral arms, . : : Sree 
- oe ss ventral arms, ence 
Station 230, in 464 fathoms, off St. Vincent, W. I., 1878-79. 
A very large specimen of this species has recently been taken by the U. S. 
Fish Commission steamer “ Albatross,” at Station 2074, in 1309 fathoms, N. Lat. 
41° 43’, W. Long. 65° 15’ 20”, 
