[103] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 313 



pie, long, acute, the outermost rather narrower at base and somewhat 

 longer. 



Total length, 109 cm (43 inches) ; length of body and head, 48.2 cm (19 

 inches); length of body from dorsal edge of mantle, 35.56 cm (14 inches) j 

 from ventral edge, 33.16 cm (13 inches); of head from edge of mantle to 



Measurements of Sthenoteuthis megaptera and S. pteropus (in inches). 



diss 



V 



a: 

 23 





B~ 





Length, tip of tail to end of dorsal arms 



Length, tip of tail to end of third pair 



Length to end of tentacular arms 



Length to base of arms 



From base of arms to mantle. 



Tip of tail to edge of mantle (above) 



Tip of tail to edge of mantle (belowj 



Tip of tail to center of eye 



Length of caudal fin (tip'to insertion) 



Breadth of caudal fin 



Breadth between lateral insertions 



End of body to outer angle of fin 



Front edge of fin, from outer angle to insertion 



Circumference of body 



Breadth of body 



Breadth of head 



Diameter of eye-opening (longitudinal) 



Diameter of eye-opening (transverse) 



Length of tentacular arms 



Length of dorsal arms (first pair) 



Length of subdorsal arms (second pair) 



Length of subventral arms (third pair) 



Length of ventral arms (fourth pair) 



Breadth of first pair of arms at base 



Breadth of second pair of arms 



Breadth of third pair of arms 



Breadth of fourth pair of arms 



Breadth of tentacular arms 



Breadth of terminal club of same 



Length of siphon in middle 



Breadth of siphon at base 



Breadth of aperture of siphon 



DETAILS OF TENTACULAR ARMS. 



Length of ' club, ' or expanded part 



Length of part bearing large suckers 



Length of ' wrist, ' bearing smaller suckers . 



Length of tip, with small suckers 



Breadth of ' club ' in middle 



Breadth of middle of arm 



Diameter of 

 Diameter of 

 Diameter of 

 Diameter of 

 Diameter of 

 Diameter of 

 Diameter of 

 Diameter of 

 Diameter of 

 Diameter of 



DETAILS OF SUCKERS. 



largest suckers of tentacular arms 



rims of same 



largest suckers of dorsal arms 



rims of same 



largest suckers of second pair 



rims of same 



largest suckers of third pair 



rims of same 



largest suckers on ventral anas. . . 

 rims of same 



Upper mandible, total length 



Upper mandible, tip of beak to bottom of notch 



Upper mandible, tip to dorsal edge of frontal lamina 



Upper mandible, breadth between anterior lobes of alse. 



Upper mandible, breadth of palatine 



Lower mandible, total length 



Lower mandible, depth, end. of al» to mentum 



i-iower mandible, beak to notch 



25.5 



13.5 



2.33 



7 



6.5 

 12.5 



5 



4 



1. 



25 



24 

 6.5 

 8 



8.5 

 8 



.75 

 1.12 

 1.00 

 1.00 

 , 33-. 50 



.75 



6.5 

 3.25 

 1.25 

 1.50 

 .75 

 .50 



1.16 

 .40 



.32 



27.5 

 29.5 



20.5 

 6.25 

 14.75 

 14.5 

 18.5 

 6.75 

 11.25 

 2 



7.25 

 5.5 

 11.5 

 4.75 

 3 + 

 1.75 

 1.25 



7.25 



8.75 



9.25 



9.25 



.75 



.80 



.90 



.90 



. 40-. 75 



2.5 

 .2 

 .1 



.28 

 .20 

 .40 



.28 



.32 

 .24 

 . 30 



.23 



1.68 

 .40 



1.32 

 .32 

 .84 



1.16 



1.12 

 .44 



1.25 

 .34 

 .98 

 .25 

 .70 

 .91 

 .87 

 .31 



