GRAPSOIDEA. 335 



acute. Anterior feet smooth, hand naked externally, below obso- 

 letely uni-costate or hardly so, surface within having a lanose spot, 

 carpus smooth ; fingers of male gaping and touching only at tips. 

 Posterior feet somewhat hirsute at the margins, especially of fourth 

 and fifth joints. 



Plate 20, fig. 6 a, animal, natural size ; b, hand, in outline. 



Puget's Sound. Lieut. Case. 



Length of carapax, ten lines ; breadth, eleven and a half lines. 







P. oreyonemis, DANA, Proc. Acad. Nat. Sci. Philad., 1851, v. 248. 



PSEUDOGRAPSUS NUDUS. 



Carapax obsolete areolatus, regione mediand vix circumscriptd, cum lined 

 elevatd non intersectd, areold intramediand (3 M ) twn circumscriptd, 

 fronte paulo arcuato, margine antero-lateraU bi-emarginato. Pedes 

 toti nmli; antici cequi, manu extus nudd, Icevi, infra levissime' uni- 

 costatd, intus partim lanosd, carpo Icevi; 8 postici paulo lati, tarso 

 sulcato. 



Carapax obsoletely areolate, median region hardly circumscribed, not 

 crossed by a raised line, areolet 3M (intramedian), not circum- 

 scribed ; front slightly arcuate, antero-lateral margin bi-emarginate. 

 Feet all naked ; anterior equal, hand naked and smooth without, 

 faintly uni-costate towards lower part, within over a spot lanose, 

 carpus smooth; eight posterior feet compressed, tarsus sulcate, com- 

 pressed. 



Plate 20, fig. 7 a, male, natural size ; b, under view ; c, hand, natu- 

 ral size. 



Puget's Sound and San Francisco. C. Pickering. 



Length of carapax of a female, ten and a half lines; greatest 

 breadth, twelve and a half lines; ratio, 1:1-19; length of a male, 



