1921] 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 Rathbun, Proc. Biol. Soc. Wash., 11, p. 111, 1897; Amer. 
Nat., 34, 134, 1900; H. A. E., 10, 176, pl. 6, fig. 2, 1904; Weymouth, 
Stanford Univ. Publ., Univ. Ser., no. 4, 49, pl. 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 
