110 CALIFORNIA ACADKMY OF SCIENCES. 



Pachycheles pubescens, sp. nov. 



Carapace suborbiculate, not so convex longitudinally as in rudis, and 

 more or less distinctly areolated in front, where it is marked by small, 

 transverse punctures. Branchial regions transversely striated. Sinus of 

 the posterior margin of the carapace subacute and not nearly so deep as in 

 the preceding species. Front entire moderately deflexed, somewhat pro- 

 duced and rounded in the center. The membranoiis interval separating 

 the parts of the subbranchial region is nearly vertical. Eyes large. An- 

 teuual peduncle compressed. Superior orbital margin concave; postorbital 

 tooth acute. The ischium of the maxillipeds is finely transversely rugose 

 and the distal margin is more or less truncated. Upper surface of the 

 chelipeds not rugose or tuberculated, but coarsely granulated and setose; 

 granulations large, smooth, shining, generally transverse, those on the 

 hand larger, becoming more acute towards the outer side, where they give 

 rise to a denticulated margin; a tooth on the anterior margin of the merus; 

 carpus generally a little wider than long, the anterior margin laminate and 

 cut into three or four teeth armed with secondary denticles, which are 

 most numerous on the proximal tooth; hand similar in shape to that of 

 rudis; fingers stout, the inner margins hairy. Legs stout, setose. Pro- 

 podi and dactyls spinulous below. 



Length of carapace, 15 mm.; width, 15 mm.; length of carpus, 11.5 mm.; 

 width, 11.5 mm.; length of hand, 22 mm.; width, 13 mm. 



Drake's Bay, Calif.! Farallon Islands! Humboldt 

 County, Calif.! 



This species differs from Pachycheles setimanus (Lock- 

 iiigton), the types of which I have examined, in its 

 somewhat narrower carapace, more prominent front and 

 broader pollex. 



Collection of the University of California. 



Legion GALATHEINEA. 



Carapace elongated, generally rugose, and quite distinctly areolated; ros- 

 trum prominent, acute. Ocular peduncles short and stout, and lodged in 

 incomplete orbits. Autennules not lodged in fossettes. Antennae with 

 the second and third joints often coalesced; flagellum long. Maxillipeds 

 subpediform, the ischium and merus narrow. Chelipeds often slender 

 and elongated. Fifth ambulatory legs feeble and inflexed. Abdomen 

 broad and bent under the body; in the female the second to fifth segments 



