ACADEMY OF SCIENCES. 65 



5. II. coarctatus. Leach. Malac. Pod. Brit. pi. XXI, b. Milne Edwds. 



Hist. Nat. des Crust. 1, 312. Brandt. Sibirische Eeise, 1, 79. 



Stirnpson. Crust, and Echi. Pac. Shores N. A., 10. 

 Behring's Straits. 



Herbstia parvifrons. Randall. Jour. Acad. Nat. Sci. Phil., VIII, 109 

 Gibbes, Proc. Amer. Assoc, for Advancement Sci., 170. Stirnj>son. 

 C. &E. P. C. N. A. 

 Dr. Randall's description of this species is very imperfect. Stimpson and 

 Gibbes give no description, but simply refer to the specimen in the Philadel- 

 phia Cabinet. "Western America, Nuttall." 



It is not improbable that one of the species described further on may be 

 identical with this. 



7. Platypes edentata. Lockington. Proc. Cal. Acad. Sci., March 20, 1876. 

 La Paz, 3 fms. Port Escondido, Mulege Bay. Mazatlan. 



By an error in my original description, the " manus " of the first pair of 

 limbs was stated to be alveolate on its upper edge. It is the merus that is 

 alveolate. The extremely broad depressed appearance of the four hinder 

 pairs is mainly due to the abundant tomentosity of their anterior and posterior 

 margins, yet the limbs themselves are considerably flattened. 



The first pair of limbs, in alcoholic specimens, are of a bright, shining car- 

 mine tint. The shape of the carapax is that of the Pisinoe, but the bifid ros- 

 trum renders its position doubtful. 



No. 12. Pemale aud two young specimens, dried. Mazatlan. Hy. Ed" 

 wards. • 



No. 18. Male and female, in spirits. Gulf of California. Fisher and 

 Lockington. 



8. Loxorhynchas grandis. Stimpson. Crust, and Echi. Pac. S. N. A., 12. 



Stimpson says of this species, "taken off the coast of California, near San 



Francisco." I have never heard of this crab in this locality, and it is never 

 brought to market. 



The Museum of the Cal. Acad. Sci. possesses two dried specimens, one, a 

 male, from Santa Barbara, the other, a female, from Santa Catalina Island. 



No. 10. Male. Santa Barbara. Mr. Lorquin. 



No. 11. Female. Santa Catalina Island. 



9. Loxorhynchus crispatus. Stimpson. Crust, and Echino. P. S. N. A., 13. 

 I have not seen this species. 



10. Homalacanthahirsuta. Hale Streets. Proc. Acad. Nat. Sci. Phil., 1871, 



238. 

 Panama. 



Ala. nov. gen. 



Rostrum bifid to base, deflected downwards; fixed joint of outer antenna? 

 broad, the outer apex continued into a long spine in the same plane with the 



