of the Pacific Shores of North America. 469 
Mus. Expl. Exped.; Bost. Soc.; Phil. Acad.; Smith- 
sonian; Acad. Petrop.; Paris. 
PSEUDOGRAPSUS NUDUS. Dana. 
Pseudograpsus nudus, Daxa; U. S. Exploring Expedition, Crust. i. 335, PL XX. 
f 7. Mirxr-Epwanps; Mélanges Carcinologiques, 158. STIMPSON ; Proc. 
Cal. Acad. Nat. Sci. i. 88. 
This beautiful species may be at once recognized by the 
glossy smoothness of its feet. The posterior pair of feet 
are very short. It is of a dark purplish-red color above; the 
carpus and hand much lighter, and spotted. It grows to a 
large size ;—the carapax of one specimen from Monterey 
measuring two inches in length, by two and two fifths in 
breadth. It has some resemblance to Pachygrapsus crassi- 
pes, which is found with it, but may be distinguished by 
the character of the maxillipeds and the nearly smooth tarsi. 
It is found among rocks at the mouths of bays, or on the 
open sea-coast, where the water is clear. Like the preced- 
ing it is a littoral species, and is often found near high- 
Water mark. It was found in Puget Sound, (Expl. Exped.;) 
Tomales Bay, (Samuels ;) San Francisco Bay, (Stimpson ;) 
and at Monterey, (Trowbridge and Taylor.) 
Mus. Bost. Soc.; Smithsonian; Acad. Petrop. 
Heterograpsus marmoratus, M. Epw. (Cyclograpsus mar- 
moratus, Wuire,) is perhaps identical with P. nudus. If 
80, Dana’s name has priority, as no deseription accompa- 
nies Wurre’s name in the British Museum catalogue. it 
'S said to be found at Sitka. 
GECARCINUS QUADRATUS. De Saussure. 
reinus quadratus, DE SAUSSURE ; Rev. et Mag. de Zool. v. 360, Pl. XII. f. 2. 
Mazatlan, (Verreaux.) 
Mus. Phil. Acad. 
