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 Rathbun: 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 lewcomanus Lockington, Proce. Calif. Acad. Sci., 7, 100, 1877 
(not X. leucomanus, p. 32). 
Lophoxanthus leucomanus Holmes, Occas. Papers Calif. Acad. Sci., 7, 61, 
1900 (part). 
Lophopanopeus lockingtoni Rathbun, H. A. E., 10, 183, pl. 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 Pedro, California, to Gulf of California (Rathbun). 
