298 



A. M Verrill — North American Gephalopods. 



not be seen with the naked eye ; they at-e deep, cup-shaped, with a 

 small circular aperture, supported by a horny rim, which is often 

 armed with two or three sharp teeth on one side (fig. 3e). 



Color of body and arms, so far as preserved, in alcohol, deep 

 brownish orange ; on the upper side of the back and caudal fin the 

 color is better preserved, and shows small, ocellated, circular spots of 

 orange-brown, with an inner circle of whitish, and a central spot of 

 purplish brown. Similar spots also exist on the head and arms, and 

 also on the lower side of the body, where the color is best preserved. 



A considerable amount of a bright orange oily fluid, insoluble in 

 alcohol, exuded from the viscera. Examined by means of the spectro- 

 scope this fluid absorbed part of the green, all of the blue, and most 

 of the violet rays. The stomach contained fragments of small Crus- 

 tacea. The pen is pale yellow, thin, and slender anteriorly, with two 

 sublateral costae, and narrow delicate margins outside the costse ; in 

 the middle it becomes still thinner and narrower, with the margin 

 inrolled ; beyond, the mai'gins become much wider and then unite 

 together ventrally, forming a long, hollow, conical portion, extend- 

 ing to the acute posterior tip ; this portion is not so broad as deep, 

 and has a slight dorsal keel and ventral groove. 



Measurements in millimeters. 



Total length to end of sessile arms 



Head and body combined 



Length of body 



Length of caudal fin, from origin.. 



Breadth of caudal fin 



Breadth of body 



Length of dorsal arms . . 



Length of 2d pair of arms 



Length of 3d pair of arms 



Length of ventral arms 



Length of tentacular arms 



Breadth of dorsal arms, at base 



Breadth of ventral arms 



Breadth of tentacular arms 



Diameter of eye 



Length of pen 



Breadth of pen anteriorly 



Breadth of pen posteriorly 



Depth of pen posteriorly 



198 

 2-25 

 2-50 



4-50 



Specimens examined. 



