112 .-1. E. Verrill — MoUmca of the Neio England Coast. 



with the corners rounded and the ohtuse tip a little prominent and 

 directed posteriorly. 



The arras increase in size and length from the dorsal to the ventral 

 pairs. The dorsal arms are very slender and short, in length not 

 half as long as the head ; the second and third paii's are similar in 

 form, but increase regularly in size and length, the third pair not 

 being equal to the length of the head ; the ventral arms are, on the 

 contrary, very much larger and longer than the third pair, their 

 length being nearly three times as great ; the tentacular arras are 

 very slender and considerably exceed the ventral arms in length when 

 extended ; the club is distinctly larger than the rest of the arm, a 

 little tialtentd and expanded in a narrow lanceolate form, and covered 

 by regular, minute suckers, arranged in about four rows along the 

 middle portion. The slender portion of the arms bears a row of small 

 sessile suckers and tubercles along nearly its whole length ; these 

 suckers are usually elliptical in form where the arm is extended, but 

 circular when contracted ; they are rather larger than the suckers of 

 the club, but are only a little elevated, and are so numerous that the 

 intervals between them are often not greater than their own diameter, 

 but when the arms are fully extended these intervals are increased. 

 On the ventral arms the suckers are small, oblique cups, constricted at 

 the aperture and attached by very slender pedicels ; they are arranged 

 rather distantly in two alternating rows, which occupy only a narrow 

 median band on the inner face of the arms ; just exterior to the 

 outer suckers, and alternating with them, there is a row of small, 

 rounded, slightly raised, reddish brown warts, in diameter eqxial to or 

 somewhat exceeding the suckers. On the other arms the suckers are 

 relatively more numerous, and more closely arranged in two regular 

 rows; on these arms they are about the same in size as on the ventral 

 ones, but are flatter, less obliquely attached, and have the aperture less 

 constricted and not so one-sided. On the inner surface of these arms 

 there are two rows of brown spots, alternating with the suckers. 

 Color of the body and head, in alcohol, pale, translucent bluish 

 white, spotted along the middle of the dorsal surface with rather large 

 chromatophores, which are not very numerous, and with fewer 

 scattered ones on the sides and ventral surface. Caudal fin yellowish 

 white, opaque (owing to the eifect of the alcohol), with a median 

 band of chromatophores along the dorsal surface and with very few 

 beneath. On the dorsal side of 1?he head, between the eyes, tlie chro- 

 matophores are more numerous than elsewhere ; a row of similar 

 chromatophores extends along the outer surface of each arm. 'I'en- 



