1 82 RATHBUN 



LOPHOPANOPEUS HEATHII Rathbun. 

 Plate vii, fig. 9. 



Lophopanopeus heathii RATHBUN, Amer. Nat., xxxiv, 137, 1900. 

 Lophoxanthus leucomanus HOLMES, Occas. Papers Calif. Acad. Sci., vii, 61, 

 1900 (part). 



Distribution. Specimens are in the National Museum from Monterey 

 Bay, California, under stones, mean and low tide mark (H. Heath; 

 types, Cat. No. 22,870) ; Monterey Bay (J. O. Snyder) ; Catalina Island. 

 Others also from Monterey and Catalina Island, and belonging to the 

 Museum of the California Academy of Sciences, have been examined. 



The carapace is smooth except on the outer half of the hepatic region, 

 where it is slightly roughened. 



The margin of the frontal lobes is slightly oblique, the outer tooth 

 inconspicuous. 



The anterior margin of the third antero-lateral tooth is in line with the 

 second tooth. 



The carpus of the chelipeds is smooth, or nearly so. 



The hand is smooth, one tooth on inner side of upper margin. 



The dark color of the fingers does not run back on the palm. 



The carpal joints of the ambulatory legs have the anterior or upper 

 margin slightly bilobed. 



The propodi have slightly convex anterior margins. 



Dimensions. Male, length 12.2 mm., width 16.5 mm., proportion of 

 length to width i : 1.35, fronto-orbital width 1 1.6 mm., proportion of fronto- 

 orbital width to width of carapace i : 1.42. 



While the antero-lateral teeth resemble those of L. bellus, the smooth 

 surface and the tooth on the manus ally it closely to L. frontalis. 



LOPHOPANOPEUS LEUCOMANUS (Lockington). 



Xanthodes leucomanus LOCKINGTON, Proc. Calif. Acad. Sci., VII, 32, 1877 (not 



X. leucomanus, op. cit., p. 100). 



Lophoxanthus bellus A. MILNE EDWARDS, Crust. Reg. Mex., 257, 1879 (part). 

 Lophopanopeus leucomanus RATHBUN, Bull. Lab. Nat. Hist. State Univ. Iowa, 



iv, 272, 1898. 

 Lophoxanthus leucomanus HOLMES, Occas. Papers Calif. Acad. Sci., VII, 61, 



pi. I, fig. 4, 1900 (part). 



Distribution. From Monterey to San Diego, California: San Pedro, 

 Catalina Island, and San Diego (National Museum) ; Monterey, Santa 

 Rosa Island, and San Diego (Lockington). Types not extant (Holmes). 



The anterior half of the carapace is deeply rugose, the roughness on 

 the hepatic region not divided from that on the two adjacent teeth. 



