226 RICHARDSON 



produced in the center in a large triangularly shaped lobe with rounded 

 apex. The uropoda are slender appendages; the peduncle is some- 

 what shorter than the branches. The inner branch 

 is about a fifth longer than the outer branch. The 

 margins of all the segments, the uropods, and the 

 legs are fringed with hairs. 



The legs of the first pair are cheliform; the 

 propodus is elliptical in outline, with the inferior 

 margin straight. The other legs are similar and 

 ambulatory in character. 



The color of the species is a light brown, some- 

 what mottled. 



Family MUNNID^E. 

 MUNNA sp. 



Leg of first 



*" A very much mutilated specimen of a species of 



Munna was taken by the Harriman Alaska Expedition at the Pribilof 

 Islands. The Munnidae have not heretofore had any representatives from 

 the Pacific coast. Although it is very probable that the present speci- 

 men is the type of a new species, it is not, however, in a sufficiently 

 complete condition to warrant a description. 



ONISCOIDEA. 



Family LIGIID&. 



LIGIA OCCIDENTALIS Dana. 



Ligia ocddentalis DANA, U. S. Expl. Exp., Crust., xiv, Pt. n, p. 742, pi. XLIX, 

 fig. 7; Proc. Acad. Nat. Sci. Phila., vn, p. 176. STIMPSON, Bost. Jour. 

 Nat. Hist., vi, p. 506, 1857. HARFORD, Proc. Calif. Acad. Sci., vn, p. 

 116, 1877. BUDDE-LUND, Crust. Isop. Terrestria, p. 264, 1885. RICH- 

 ARDSON, Proc. U. S. Nat. Mus., xxi, p. 866, 1899. 



Localities. Sausalito, California, and San Bartolome' Bay, Lower Cali- 

 fornia (Dr. Ritter and party). 



LIGIA PALLASII Brandt. 



Ligia pallasii BRANDT, Bull. Soc. Imper. des Natur. de Moscou, VI, p. 172, 



1833- 

 Ligia dilatala STIMPSON, Bost. Jour. Nat. Hist., p. 507, pi. XXII, fig. 8, 1857. 



S. I. SMITH, Rept. Prog. Geol. Survey Canada, 1878-79. 

 Ligia septentrionalis LOCKINGTON, Proc. Calif. Acad. Sci., VII, Pt. I, p. 46, 



1877. 



Ligia stimpsoni MlERS, Proc. Zool. Soc. London, p. 671 (see footnote), 1877. 

 Ligia pallasii BUDDE-LUND, Crust. Isop. Terrestria, pp. 261, 262, 1885. 



Locality. Lowe Inlet, British Columbia (Harriman Alaska Expedition). 



