1921] Schmitt: The Marine Decapod Crustacea of California 211 
KeryY TO THE CALIFORNIA SPECIES OF PELIA 
I..Male with fingers of chelae widely gaping; palm oblong, inflated; edges 
obtuse and subparallel. 
tumida, p. 211. 
II. Male with fingers of chelae meeting throughout the extent of their inner edges, 
except for a small narrow slit at the base; palm slender, more or less 
elongated, not inflated, only slightly enlarged, edges tapering distally. 
clausa, p. 211. 
Pelia tumida (Lockington) 
Plate 34, figures 5 and 6 
Pisoides (?) tumidus Lockington, Proc. Calif. Acad. Sci., 7, 30, 67, 1877. 
Pelia tumida Holmes, Occas. Papers Calif. Acad. Sci., 7, 35, 1900. 
Characters.—Carapace pyriform, rounded, tumid, covered with pubescence, but 
entirely devoid of spines; there is a small rounded tubercle on the summit of the 
gastric region, and a small rounded elevation on cardiac region; rostrum depressed, 
elongated, nearly one-half the length of the carapace, bifurcated for about half 
its length; horns narrow, diverging, and slightly upturned at the tip; no preorbital 
spine, postorbital small; basal antennal joint considerably longer than wide and 
devoid of teeth with the exception of one at the antero-external angle. Chelipeds 
‘unarmed; hand oblong, inflated, edges obtuse and parallel; fingers widely gaping. 
Dimensions.—Type, male: length, 17 mm., width 11.4 mm. 
Type Locality—San Diego, California. 
Distribution—Santa Monica Bay, and Santa Catalina Island, California, to 
Magdalena Bay, Lower California. 
Pelia clausa Rathbun 
Plate 34, figures 1, 2, 3, and 4 
Pelia pacifica Rathbun (not Milne Edwards), Proc. U. S. Nat. Mus., 16, 
90, 1893. 
Pelia: clausa Rathbun, Mem. Mus. Comp. Zool., 35, 72, 1907. 
Characters.—Very similar to P. tumida, with rostral horns slightly shorter, 
comparatively, and possibly a little more divergent, but differing markedly in 
the character of the hands of the male. In the males of P. clausa the fingers of 
the chelae meet throughout the extent of their inner edges, except for a small 
narrow slit at the base; the palm is slender and more or less elongated, only 
slightly enlarged, with edges tapering distally. 
Dimensions.—Type, male: length of carapace 13.4 mm., width 8.5 mm. 
Type Localitu.—Southern California. ; 
Distribution—From Santa Monica Bay, California, to Magdalena Bay, Lower 
California (Rathbun). 
Remarks.—The females of P. clausa are very similar to those of P. tumida. 
The differences are more comparative than apparent. In P. clausa the fingers 
and palm of the female are more slender, and the palm is less inflated. 
