1921] Schmitt: The Marine Decapod Crustacea of California 129 
a. Median projection of front triangular and acute. 
i. Carpus of large cheliped deeper than wide; inner face 
flat and perpendicular, forming a sharply distinct 
angle with the inferior or lower face. Small hand 
very much compressed laterally, deeper than wide, 
sides (inner and outer faces) subparallel. Anterior 
portion of carapace very long, about one-third 
longer than wide; not hairy, smooth and shining. 
(Not known south of Monterey Bay.) 
Pagurus hemphillvi, p. 142. 
vi. Carpus of large cheliped not deeper than wide; inner 
face rounded off below and passing more or less 
evenly into the inferior or lower surface. Small 
hand wider than deep, more flattened than com- 
pressed; sides laterally swollen rather than parallel. 
Carapace more or less hairy. 
* Anterior portion of carapace wider than long, more 
or less squarish or squat looking. Hye-stalks 
short and stout. Acicle typically exceeding eye- 
stalks, often, however, not so long. Dactyls of 
ambulatory legs about as long as propodi. 
Pagurus hirsutiusculus, p. 137. 
** Anterior portion of carapace longer than wide. Eye- 
stalks moderately stout. Acicle never exceeding 
eye-stalks. Dactyls quite short and stout, appear- 
ing shorter than propodi, sensibly stouter than 
in preceding species. (Not known north of Hum- 
boldt County.) 
Pagurus samuelis, p. 139. 
b. Median projection of front rounded, short, and low, very 
blunt or broadly rounded. 
i. Small hand with outer face flat-triangular, forming a 
distinct angle with inferior or lower face; lower 
face smooth though hairy. Large hand more or less 
coarsely and irregularly granulate. Ambulatory 
legs moderately or extremely hairy. (Not known 
south of Monterey Bay.) 
Pagurus beringanus, p. 135. 
vi. Small hand with outer face more or less swollen-tri- 
angular, not forming a distinct angle with under 
side; edge evenly rounded; lower face granulated 
like the outer, scarcely if at all hairy. Large hand 
more or less evenly and finely granulated. Ambula- 
tory legs sparsely if at all hairy. 
Pagurus granosimanus, p. 141. 
ii. Small hand comparatively very feeble, less than one-third 
greatest width of palm of larger hand. Large hand more 
or less suborbicular, feebly granulated on palm. Median 
projection of front sharply triangular, acute. (Not known 
north of Santa Catalina Island.) 
Pagurus californiensis, p. 143. 
