244 University of California Publications in Zoology [Vol. 23 



Characters. — Carapace with anterior half deeply rugose, the roughness on the 

 hepatic region not divided from that on the two adjacent teeth; frontal lobes 

 strongly oblique, except the outer tooth, which is quite strongly marked. Carpus 

 of chelipeds covered with numerous small, irregular pits, separated by reticulating 

 lines; upper portion of hand pitted, reticulated like carpus, and with two or 

 more irregular, inwardly directed teeth on upper margin, the proximal one being 

 the larger; dark color of fingers not running back on palm. Carpal joints of 

 ambulatory legs have on the anterior or upper margin a very thin crest, strongly 

 bilobed; propodal joints are wide, and have a prominent lobe at the proximal end. 



Dimensions. — Type: length 8.6 mm., width 12.7 mm. A male, examined by 

 Miss Bathbun: length 8.7 mm., width 11.6 mm., proportion of length to width 

 1 : 1.33, fronto-orbital width 7.1 mm., proportion of fronto-orbital width to width 

 of carapace 1 : 1.63. 



Type Locality. — Monterey, California. 



Distribution. — From Monterey to San Diego, California (Rathbun). 



Remarks. — Occasional under stones between tides (Baker). 



Lophopanopeus lockingtoni Rathbun 



Plate 37, figure 2 



Xanthodes leucomanus Lockington, Proc. Calif. Acad. Sei., 7, 100, 1877 



(not X. leucomanus, p. 32). 

 Lophoxanthus leucomanus Holmes, Gccas. Papers Calif. Acad. Sci., 7, 61, 



1900 (part). 

 Lophopanopeus lockingtoni Bathbun, H. A. E., 10, 183, pi. 7, fig. 7, 1904. 



Characters. — Carapace with anterior half irregularly roughened ; the obliquely 

 oval granulated patch on the hepatic region separated from the granules on the 

 adjacent teeth; frontal lobes slightly oblique but the outer tooth well marked. 

 Carpus of chelipeds crossed by a few thickened ridges incompletely reticulating, 

 anterior margin having a thick granulated ridge distinctly separated by a deep 

 sulcus from the rest of the carpus; a large tubercle near the articulation with 

 the hand; upper margin of hand with two longitudinal ridges, outer one straight, 

 the inner curved and ending proximally in a tooth; outer surface of hand granu- 

 late, granules tending to form in longitudinal and transverse lines, and becoming 

 fainter toward the fingers; dark color of fingers not running back on palm. Carpal 

 joints of ambulatory legs distinctly but not markedly bilobed on the anterior or 

 upper margin; the propodal joints with a slightly convex anterior margin. 



Dimensions. — Type, male: length of carapace 9.6 mm., width 13.3 mm., pro- 

 portion of length to width 1:1.39; fronto-orbital width 7.9 mm., proportion of 

 fronto-orbital width to width of carapace 1:1.68. 



Color. — Shows great variation, some have black fingers with white tips, others 

 have colored fingers, and the general tint of the carapace varies considerably 

 (Lockington). 



Type Locality. — San Diego Bay, California. 



Distribution. — San Bedro, California, to Gulf of California (Rathbun). 



