PYCNOGONIDA OF NEW ENGLAND AND ADJACENT WATERS. 489 



is a feature wliicli I have not seeu iu any other species of the genus. It 

 has been taken at a few localities in the Gulf of Maine in from 85 (or 

 perhaps less) to 115 fathoms. A single specimen is known from Ban- 

 quereau, off a!«rova Scotia. All the specimens, as shown below, are from 

 deep water, and most of them from muddy bottoms. 



JSjyccimens examined. 



Nymphon longitarse Kioyer. 



Nat. Tidss., Iste Bind, 2det Hsefte, p. 112, 1844 ; Voy. en Scand., Laponie, etc., 

 PI. 36, fig. 2a-&.— Wilson, Trans. Conn. Acad., vol. v, p. 19, PL VII, figs. 2a 

 to2h, jTily, 1878. — G. O. Sars, Arcliiv for Mathematik og Naturvidenskab, 

 Andct Biud, Tredie Heft, p. 366, 1877. 



Plate VI, Figures 30 and 31. 



Entire animal extremely slender. Body smooth. Oculiferous segment 

 produced into a very long slender neck, expanding anteriorly for the 

 attachment of the antennae. Posterior segment very narrow, lateral 

 process directed nearly backward. Abdomen small, tapering. Ocu- 

 liferous tubercle rounded, eyes black, ovate. 



Eostrum slender, rounded, shorter than the basal joint of the an- 

 tennae. 



Antennae very slender, slightly hairy ; claws of chelae very long and 

 slender, their tips crossing when closed; the spines with which they are 

 armed are larger and less numerous than those of ]!f. Strdmii. 



Palpi resembling those of N. Stromii, but more slender and with the 

 fourth joint shorter than the third or fifth. 



Accessory legs remarkably slender; the three basal joints are very 

 short and nearly equal; fourth nearly twice the length of the first three 

 united; fifth somewhat less; sixth equal to the three basal joints, about 

 twice the seventh ; the remaining joints decrease to the last, which is 

 claw-like with a few spines on its inferior margin ; spines of the distal 

 joints decidedly curved. 



Legs resembling those of y. Stromii but much more slender and with 

 the tarsus very long, nearly twice the propodus ; both these joints are 

 very slender, nearly straight, and along their entire inferior margin is a 



