362 Puget Sound Marine Sta. Pub. Vol, 1, No. 30 



carpus; dactyls slender. Second pair of walking legs longer and stouter 

 than the first pair. Third pair of walking legs considerably longer and 

 stouter than any of the others ; dactyl short and thick. Fourth pair of 

 walking legs shortest of all, their distal ends not extending beyond the 

 merus of the third pair. Color golden brown with spots of bluish gray on 

 dorsal surface. Much lighter and of uniform color on ventral surface. 

 The carapace measured 16 mm. wide and 7 mm. long. 



Found in burrows of sandworms on Newhall's beach (5) and on Brown 

 Island opposite the Marine Station (8). 



Three females carrying eggs were found on July 3, 1916. 



2. Pinnixa littoralis Holmes. (fig. 14) 



Carapace flattened ; width greater than length ; surface smooth, with- 

 out tubercles or hairs; front truncated, with a well defined median groove; 

 the posterior portion to the median line curves to meet the posterior mar- 

 gin. Chelipeds large, smooth; hands long, over one-half the length of the 

 whole cheliped, somewhat inflated ; pollex short, inclined downward, with a 

 notch at the distal end into which the tip of the curved dactyl fits ; when 

 the dactyl closes against the pollex the inner margins do not meet as in 

 P. tubicola, but a somewhat rounded opening is found between them. 

 AValking legs more slender and nearer the same size than in P. tubicola; 

 third pair stoutest and longest; distal end of fourth pair extending slightly 

 beyond the merus of the third pair; dactyls stout, distally curved at the 

 tips. Color grayish-white and often with brownish tipped walking legs. 

 The carapace measured 5 mm. wide and S mm. long. 



Found in the mantle cavities of Macoma nasuta, Mya arenaria and 

 the cockle. On the sandy beach on Brown Island opposite the ^larine 

 Station (8) and McDonald's beach (3). 



Genus Scleroplax 

 1. Scleroplax granulata Rathbun. (fig. 15) 



Pinnixa (Scleroplax) granulata Holmes. 



Carapace sub-orbicular, strongly convex, "curving downwards to- 

 wards all the margins" ; surface not marked by any prominent sulci, some 

 showing just faint indications of the median sulcus and others no indi- 

 cations at all, punctate, devoid of any hairy covering, slightly granular 

 near the margins. Orbits small, circular, with a very narrow interorbital 

 space. Distal joints of maxillipeds fringed with long curved hairs. Cheli- 

 peds of male larger and longer than those of female, hand also more in- 

 flated than in female; hands of both sexes granulated, slightly pubescent; 

 dactyl strongly curved ; pollex slightly inclined downward but not curved. 

 Walking legs long, slender, not markedly unequal ; dactyls long, slender. 



