PYCNOGONIDS 279 



ceeding joints smaller (not successively) ;/. i o very small. The tenth 

 joint is armed with two rather long, curved, denticulate (?) spines; the 

 i or 2 spines on the preceding joints appear to be simple. Oviger of the 

 male about half as long again as that of the female ; proportionate size of 

 joints nearly the same, but jj.8, 9, and 10 turn inward (or downward if 

 the appendage is carried in a horizontal position, as in fig. 7, pi. xxi) 

 upon/. 7, and the preceding joints at nearly a right angle. The joints of 

 the terminal part of the oviger are armed with a few short, slender, simple 

 spines. 



Legs about twice as long as body: c.i short, with a spine-bearing 

 process on each of the distal dorsolateral corners; the male with an 

 additional similar projection on the mid-dorsal line between these. The 

 tubercles are also longer and sharper in the male. Second coxal joint a 

 little longer than c.i, broader distally; .3 shorter again; /. equal in 

 length to coxal region, gradually increasing in breadth distally, where it 

 ends in a triangular projection terminated by a short, stout spine ; /. of 

 female swollen, broadest in middle; t.i and /.2 each about equal to/, 

 rather slender, armed on the dorsal border with 2 or 3 long, slender 

 bristles and a few shorter ones; ventral border of t.2 with a regular 

 series of short, slender spines. First tarsal joint about as long as broad, 

 convex ventrally, where it bears several fine bristles ; with a well-marked 

 'lappet' dorsally. Second tarsal joint long and slender, at least five 

 times as long as broad, nearly straight ; dorsal surface with a series of 

 spines, 2 or 3 of which are especially long and slender (about like those 

 on f.i and 2) ; the others shorter; no distinct heel; the ventral surface 

 furnished with a more or less regular row of about i o short spines. In addi- 

 tion to what has been mentioned, the several joints of the leg have scat- 

 tered short hairs or slender spines. Claw comparatively rather short, 

 hardly half as long as /.2, falciform; aux. cl. slender, half as long as d. 



Length about 1.3 mm., extent slightly over 5 mm. The two sexes of 

 about equal size. 



Immature specimen. -The one immature specimen examined was about 

 three fourths the size of the adults and more slender ; otherwise it much 

 resembled the female, especially in the character of its tubercular pro- 

 jections and spines. It had, however, chelate chelifori, the chelse being 

 large and strong. 



SPECIMENS EXAMINED. 



