66 CALIFORNIA ACADEMY OF SCIENCES. 



orbital fissure, and a prominent, subacute tooth at the infero-interual 

 angle. Ocular peduncle with a few baccations in front. Antennules 

 transversely plicated, the basal joint with a granulated or baccated ridge. 

 Basal autenual joint short but touching the outer angle of the front. 

 Merus of the maxillipeds subrectangu lar, transversely truncated in front, 

 with the outer angle rounded and slightly produced. Chelipeds stout, 

 more or less unequal; merus trigonal, with the distal portion of the upper 

 margin armed with a few spine teeth; carpus thickly covered with promi- 

 nent, rounded, smooth, glossy, rose-colored tubercles; hand oblong, with 

 the palm longer than wide, the upper and outer surface covered with 

 rose-colored tubercles like those on the carpus, arrau ged in seven or eight 

 longitudinal rows; fingers stout and colored black, the color not extending 

 back upon the hand. Legs compressed, thickly covered with stiff seta& 

 and strongly spinous, especially on the merus and propodus; dactyls 

 about as long as the propodi. Abdomen of the male five-jointed, the 

 penultimate joint about as long as wide; last joint broadly rounded. 

 Length of carapace 13 mm.; breadth 19.5 mm. 



Monterey (Stimpson)! Santa Rosa! San Pedro! San 

 Diego! Santa Catalina Island! Magdalena Bay and San 

 Jose Island (Lockington). 



" This species," says Lockington, "appears to be of 

 common occurrence from Monterey southward to Mag- 

 dalena, but to disappear, or at least to become rare, in 

 localities further south." 



Xanthias latimanus (Lock.) 



Xanthodes latimanus LocKixoToy,Proc. Cal. Acad. Sci., Vol. VII, 1877, p. 3U 

 Xantho latimanus LOCKINGTON, 1. c., p. 101. 



Lockington's description of this species is as follows: " Front sinuate, 

 the inner angle of the orbit raised into a point; carapax but slightly 

 transverse; teeth N. T. S. prominent and pointed, D and E almost obso- 

 lete; areolation of medial and antero-lateral regions distinct, the former 

 having the parts 2M and 3M entirely outlined. Hands subequal, the- 

 right somewhat the larger; movable fingers very long and curved abruptly 

 downward; margin of manus continuous with th broad base of the fixed 

 finger so as to form a sinuous sloping line; hinder feet compressed. This 

 species may readily be identified by the delicate marbling of the carapace 

 and chelipeds, and the downward bend of the movable fingers. Abdomen, 

 of male five-jointed. 



"A single male specimen from San Diego. 



" Length 0.73; breadth 0.88 [inch]." 



