410 A. E. Verrill — N'orth American Cephalopods. 



more slender and acute. The margins of the suckers are surrounded 

 with small, elongated scales. (PI. LVI, figs. \d^ le.) 



The buccal membrane is thin and much produced, with the angles 

 little prominent ; it is attached to the arms by eight thin, but wide, 

 bridles, the two superior ones united together near their origin. 

 The web between the arms is rudimentary but distinct. The pen (fig. 

 \d) is very unlike that of (J. Veranyi, as figured and described by 

 D'Orbigny. It has a long, Tiarrow shaft of nearly uniform width, and 

 a long posterior portion, a little wider than the shaft, corresponding in 

 length to that of the caudal fin ; at the commencement, this portion 

 expands into narrrow, free, incurved margins, but these unite quickly 

 so as to form a long, narrow, angular, tubular portion, tapering to a 

 very slender tip ; this portion {la") has a dorsal keel, with a groove 

 each side of it, two dorsal angles and a ventral angle along each side ; 

 the narrow shaft has a dorsal keel, with the sides bent down abruptly, 

 nearly at right-angles, and a little incurved, so as to produce a 

 squarish keel above, with a deep angular groove below, while the very 

 narrow margins bend outward abruptly (la') ; the shaft increases very 

 slightly in width, to near the subacute anterior end, but preserves the 

 same form, and there is no distinct dilation of the margin anteriorly, 

 such as D'Orbigny figures in the pen of C. Veranyi, nor does the 

 posterior portion resemble his figure, though if split open and flat- 

 tened out, it would resemble it more nearly. 



This specimen is an adult male, in the breeding condition, for its 

 spermatophore-sac is much distended with spermatophores. The 

 color is much like that of C. Veranyi. It is eveiywhere thickly 

 specked with small, purplish brown chromatophores, except on the 

 buccal membrane and the bases of the tentacular arms, where there 

 are but few ; the head around the eyes and the end of the siphon are 

 darker ; a row of very distinct, rather large, round, dark purple spots 

 runs along the inner surface of the ventral arms, just outside of, and 

 alternating with, the upper row of suckers, which they about equal 

 in size. 



Total length, to end of ventral arms, 383""" ; to end of third pair, 

 366"""; to end of dorsal arms, 298"""; tail to dorsal mantle edge, 

 125"""; to base of dorsal arms, 178"""; length of dorsal arms, 120'"™; 

 of second pair, 150""" ; of third pair, 188"'"' ; of ventral, 205""" ; length 

 of caudal fin, 60'"'"; its greatest breadth, 41'""'; breadth of head at 

 eyes, 20'""^ ; of dorsal arms, Y'"'" ; of third pair, 10'"'" ; of ventral arms, 

 13""" ; of bases of tentacular arms, 3'"'" ; diameter of largest suckers 

 of lateral arms, 2-25'"'". 



