PYCNOGONIDS 261 
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; ¢.2 about twice as long as ¢.1, 
swollen on ventral side in distal third in both sexes, the genital opening 
being situated on this swelling; ¢.3 little longer than ¢.1; 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; #1 and 42 about equal in length, slightly shorter than /; 
#s.t very short, triangular; /s.2 stout, strongly arched; ¢/. falciform, 
about half as long as #s.2 ; aux. cl. well developed, about half as long as 
cl, Convex proximal half of the inner (ventral) border of ¢s.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 1 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 ¢.1, and sometimes extending on to the basal part 
of ¢.2, is a chitinous ridge (‘ Chitinleiste,’ Bohm, ’794, p. 188). 
Integument moderately thick, with numerous cavities; mostly smooth, 
but with scattered microscopic bristles. 
Length of 9: body 3 mm., proboscis 1.3 mm., caudal segment 0.4 
mm., extent 20mm. 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. 
