A. E. Verrili—Cephalopods of the North Atlantic. 181 
Architeuthis princeps Verrill. Plate v, figures 14, 15, 16.— 
This species is based on the lower jaw mentioned as No. 1 in 
my former papers, and on the ee and lower jaws designated 
as No. 10, in the first part of this article; besides these jaws 
we only have the rough measurements of the body of No. 1, 
and an estimate of the diameter of the sessile arms. The jaws 
of No. 10 were obtained from the stomach of a sperm whale 
taken in the N. Atlantic, and were presented to the Essex 
Institute by Capt. N. E. Atwood, of Provincetown, Mass., but 
the date and precise locality of the capture are unknown. "The 
form of these jaws is well shown in figures 14 and 15. The 
total length of the pies jaw (fig. 14) is 5 inches; greatest 
breadth, 1:45; front to back, 3% inches; width of palatine 
lamina, 232. The inte portion is considerably broken, but 
the dorsal portion appears to extend nearly to the posterior ‘end, 
— ee from the point of the beak to the posterior edge 
34 inches. The a is firmer and the lamina are 
selattpely thicker than in A. monachus. The rostrum and 
most of the frontal regions are Back and polished, gradually 
coming orange-brown and translucent toward the posterior 
border, and marked with faint strie radiating from the tip of 
ret osterior margin; a slight but sharp ridge extends back- 
from the notch at the base of the cutting edge, and nigel 
les marked ones from the anterior border of the ale. 
rfi 
ker tigs aicaser strie and ridges, some of which, especially 
near the dorsal part, are quite prominent and irregular ; the 
posterior border has a broad emargination in the middle, but 
the two sides do not exactly correspond. The lower, jaw 
(plate v, fig. 15) was badly se and many of the pieces, 
especially of the ale, are lost, but all that remain have been 
