30 Crustacea and Echinodermata of the 



pinnixa fab a. Stimpson. 



Pinnothera faba, Dana; U. S. Exploring Expedition, Crust, i. 381, PL XXIV. f. 4. 



The large palpi of the external maxillipeds in this species 

 indicate its affinity with the Pinnixce. The male resembles 

 P. cylindrical (Pinnotheres cylindricum, Say,) and is much 

 smaller than the female, while the carapax is shorter and 

 broader ; its length bearing to its breadth the proportion, 

 1:1.8. The hands are very large, and of nearly the same 

 shape as in the female, the finger being, however, consid- 

 erably more curved. 



$ Length of carapax, 0.36 inch; breadth, 0.65. 

 9 " " 0.6<J " " 1.05. 



Found in the large Lutraria of the Oregon coast. Puget 

 Sound, (Expl. Exped. ;) Shoalwater Bay, (Cooper.) 

 Mns. Smithsonian ; Expl. Exped. 



FABIA SURQUADBATA. Dana. 



Fabia subquadrata, Dana ; U. S. Exploring Expedition, Crust, i. 382, 

 PI. XXIV. f. 5. 



Distinguished from the preceding by its greater propor- 

 tional length. 



Puget Sound, (Expl. Exped.;) Farallone Is. (Trowbridge.) 

 Mus. Expl. Exped. ; Smithsonian ; Phil. Acad. 



Tribe OXYSTOMATA. 



calappa coxvexa. De Saussure. 



Calappa convexa, De Saussuke ; liev. et Mag. de ZoUl. v. 362, PL XIII. f. 3. 



Mazatlan, (Verreaux.) 



