19 21 ] Schmitt: The Marine Decapod Crustacea of California 227 



that occupied by the three; supraorbital tooth more or less acute. Merus of outer 

 maxillipeds abruptly truncated, inner angle slightly produced, inner margin with 

 a conspicuous tooth below the articulation of palp. Chelipeds hairy; carpus with 

 two spines, one above, at distal end, and a second below this, at inner angle ; upper 

 surface of hand with two rows of three to five spines, outer surface with five 

 costae marked with hair and small spines; upper margin of movable finger spiny, 

 dark color on fingers reaching less than one-half the length of their outer margins. 

 Ambulatory legs hairy; dactyls slightly longer than propodi, straight, tipped with 

 nearly straight, corneous spines. 



Dimensions. — Type : length of carapace 21.2 mm., width 17 mm. ; large male : 

 35.5 by 25.5 mm. (Weymouth). The specimens taken in connection with the Bay 

 Survey measured from 11 to 29 mm. in width. 



Color. — Whitish tone marked with irregular but symmetrically disposed reddish 

 blotches, tips of fingers of chelipeds black, ambulatory legs light banded with 

 red (Weymouth). 



Type Locality. — Japan. 



Distribution. — From Granite Cove, Port Althorp, Alaska, to San Geronimo 

 Island, Lower California?, Japan. Shallow water to 40 fathoms. 



Remarks. — Miss Rathbun tells me after a recent working over of the juvenile 

 specimens of Cancer in the collection of the U. S. National Museum, that the 

 inconspicuous spine sometimes present at the inner angle of the carpus of the 

 cheliped of C. antennarius (cf. "key" on page 219) is occasionally so prominent 

 as to lead one to confuse that species with C. gibbosulus, but that the character 

 of the granulation of the carapace will serve to distinguish the two : the granules 

 on the carapace of C. antennarius are crowded, while in C. gibbosulus they are not 

 crowded but in scattered groups. 



It also appears that there are no specimens of C. gibbosulus in the Museum 

 collections from farther south than Santa Catalina Island. 



Biological Survey of San Francisco Bay. — Only three specimens 

 of Cancer gibbosulus were taken during the survey, outside, at station 

 D 5790, 33 to 35 fathoms, bottom "very coarse variegated sand, with 

 a small proportion of fine sand, temperature range 9.7° to 11.5° C, 

 salinity 33.9. 



Cancer anthonyi Rathbun 



Plate 35, figure 1 



Cancer anthonyi Eathbun, Proc. Biol. Soc. Wash., 11, p. Ill, 1897; Amer. 



Nat., 34, 134, 1900; H. A. E., 10, 176, pi. 6, fig. 2, 1904; Weymouth, 



Stanford Univ. Publ., Univ. Ser., no. 4, 49, pi. 11, fig. 33, 1910. 



Characters. — Carapace widest at ninth anterolateral tooth; anterolateral teeth 



nine, broader and less projecting than in C. antennarius, margins denticulate, 



second to eighth tooth, inclusive, having the posterior margins about twice as long 



as the anterior, first to sixth tooth, inclusive, obtuse, last three teeth with short, 



sharp tips directed forward; tenth tooth (first posterolateral) indistinct, including 



it posterior margin shows only two very faint emarginations ; front narrower than 



in C. antennarius. Merus of outer maxillipeds oblong, anterior margins slightly 



oblique. Carpus of chelipeds with a single spine above, at distal end; hand smooth 



