PYCNOGONIDS 26 I 



ally curved. The ovigera of the female are noticeably smaller than those 

 of the male ; the first three joints are somewhat similar, but the fourth is 

 shorter in proportion, and from this point to and including the tenth they 

 decrease more or less regularly in size. The eighth, ninth, and tenth fol- 

 low in line with the seventh, in this way making the terminal part of 

 the appendage straight instead of sharply bent as in the male. With the 

 exception of the spines mentioned on the distal joints in the male, the 

 ovigera of both sexes are practically smooth. 



The egg-masses are subglobular, fairly compact, and the eggs pro- 

 portionately rather large. 



Legs somewhat over twice the length of the animal, comparatively 

 rather stout. First coxal joint short; c.2 about twice as long as c.i t 

 swollen on ventral side in distal third in both sexes, the genital opening 

 being situated on this swelling; .3 little longer than c.i\f. about equal 

 in length to the coxal region, distended somewhat by the developing eggs 

 in the female ; in the male the so-called agglutinative gland opens on a 

 slight prominence on the dorsal side about a fourth of the distance from 

 the distal end of the femoral joint, this prominence not being present in 

 the female; /.i and t.2 about equal in length, slightly shorter than/; 

 ts.i very short, triangular; ts.2 stout, strongly arched; d. falciform, 

 about half as long as ts.2 ; aux. d. well developed, about half as long as 

 cl. Convex proximal half of the inner (ventral) border of ts.2 (the 

 ' heel ') armed with 5 or 6 strong, somewhat distally curved spines ; 

 concave distal half (the ' sole ') beset with a close row of very small 

 spines ; the dorsal border of the same joint bears a series of compara- 

 tively long slender bristles. First tarsal joint armed with i or 2 strong 

 and a number of short bristles. Tibial joints with a few scattered 

 short bristles, especially on the dorsal margin ; a longer one near the 

 distal end of each joint, while the femoral has 2 or 3 in a similar 

 position. Aside from these the legs are almost smooth, though in some 

 cases there are scattered hairs, especially on the basal joints. Along 

 the mid-dorsal line of f.i, and sometimes extending on to the basal part 

 of c.2, is a chitinous ridge (' Chitinleiste,' Bohm, *79 a , P- 188). 



Integument moderately thick, with numerous cavities ; mostly smooth, 

 but with scattered microscopic bristles. 



Length of? : body 3 mm., proboscis 1.3 mm., caudal segment 0.4 

 mm., extent 20 mm. Male slightly smaller and more slender. 



This species has been found in three localities on the California coast, 

 as shown in the accompanying table. Its range is undoubtedly more 

 extensive than this, and it is not unlikely that it will be found in north- 

 ern California and south to San Diego. 



