804 



.1. E. Verrill — North American Ce2yhalopods. 



the anterior end, it gradually expands laterally into a broad, very 

 thin, lanceolate form, becoming, opposite the broadest part of the 

 fin, 30""" wide, with very delicate lateral expansions and with a 

 pretty strong dorsal keel ; farther back it tapers and is very acumi- 

 nate, the lateral margins becoming involute, so as to form a very 

 long, slender, acute, terminal, hollow cone, extending to the tip of 

 the tail. The anterior end is obtusely rounded and thin ; a short dis- 

 tance from the anterior end there are two thin latei-al processes, 

 directed forward, to which the commissural muscles were attached. 



Color of entire body, siphon, and caudal fin, dark brown, thickly 

 covered Avith large roundish unequal spots of darker brown, and 

 paler brown, intermixed ; head, eyes, arms, and web, dark brownish 

 purple, with crowded chomatophoi'es ; suckers yellowish. 



Total length, to end of lateral arms, 16 inches ; to dorsal edge of 

 mantle, 13 ; length of head, 1 ; diameter of eye, 1 ; length of caudal 

 fin, 5 ; its breadth, 1'80 inches.* 



Measurements in millimeters. 



Length to tip of lateral arms, _ 



Length to base of arms _ 



Length to edge of mantle, above, . 



Length of caudal fin, 



Breadth of caudal fin, . - . 



Diameter of body, - 



Diameter of e3'e, _ -. 



Length of 3d pair of arms, 



Length of ventral arms, 



Diameter of largest suckers of lateral arms,. 



Length of pen, -. 



Of anterior linear portion, 



Of posterior lanceolate part, 



Breadth of anterior portion, ... 



Breadth of lanceolate part, .. 



A. ? 



B. 



A. is the specimen described above ; B. is the specimen described by Steenstrup 

 from Greenland. The latter had the dorsal arms 40"">i long ; 2d pair 50"'" ; tentacular 

 arms 68 and 70""" respectively. The larger size of the suckers of the latter may 

 indicate that it was a male. 



Our specimen was taken near the northern edge of the Gulf 

 Stream, W. long. 55°, by Thomas Lee, of the schooner "Wm. 11, 

 Oaks," Jan., 1879, and by him presented to the U, S. Fish Commis- 

 sion, Baffin's Bay, Northern Greenland (Steenstrup), 



* Some of these measurements are sliglitly larger than those originally given. 

 This is due to the fact that the specimen has been kept, since first received, in some- 

 what weaker alcohol, and has become more relaxed in consequence of this, combined 

 with repeated handling. 



