246 A. K Verrill — Molhisca of the Neto England Coast. 



the body, or even broader, with very large prominent eyes ; lower 

 lid prominent, a little everted, not much tliickened ; pupils large, 

 surrounded with a black circle in the preserved specimen. Siphon 

 large, stout at base, rapidly tapering to a small tip. The basal web 

 between the arms is short, extending farthest between the 3d and 

 4th pairs of arms. The arms are rather large, stout, well-i'ounded 

 externally; those of the 3d and 4th pairs are larger than the others; 

 the 1st and 2d pairs nearly equal ; all the arms bear two crowded 

 rows of suckers, which are similar in size and arrangement on all the 

 arms, and decrease regularly to the tips. These suckers are mode- 

 rately large, oblong, very oblique, with a very small orifice ; the 

 suckers are thickly specked with small chromatophores, except on 

 the under surface. Alternating with the suckers, on each side there 

 are rather large, fleshy, triangular, oblique, marginal lobes, the acute 

 inner ends running in between the suckers. The tentacular arms are 

 large, rather long and stout, but more slender than the other arms, 

 triquetral, with rounded corners, and nearly destitute of chromato- 

 phores ; the terminal club is scarcely as wide as the rest of the arm, 

 rather long, nari'ow-lanceolate in form, tapering to a blunt tip ; 

 along the upper margin of the arm, opposite the commencement of 

 the suckers, but well separated from them, there is a sharp, elevated 

 crest or keel, which does not extend to the tip of the arm ; the 

 suckers are very small, much smaller than those of the sessile arms, 

 cup-shaped, nearly equal, very numerous, forming eight or more indis- 

 tinct, crowded rows. 



The color is nearly the same over all parts of the body, head and 

 outer surfaces of the sessile arms, except on the lower surface of the 

 head around the base of the siphon, where it is paler. This color in 

 alcoholic specimens is dark brownish purple, due to large numbers of 

 rather large irregular chromatophores scattered on a yellowish 

 white ground-color. The sui-face in many parts, especially around 

 the eyes and on the dorsal surface of the body, has a glaucous blue 

 tint ; the under surface of the head, around the siplion, the tip of 

 the siphon, and the inner surfaces of the arms and siackers are 

 yellowish white, with small scattered chromatophores, which become 

 more numerous on the exposed surfaces of the suckers; outer sur- 

 faces of the arms like the body. The tentacular arras throughout 

 are yellowish white, witli the exception of a few scattered chromato- 

 phores on the outer surface. 



