in the Musewn of the Smithsonian Institution. 93 



and young male). Ambulatory feet unarmed, pubescent ; dactyli 

 very short. 



Length of carapax in a female, 0.85 ; breadth, 0.67 inch. 



It differs from II. condyliata in its shorter, broader, and 

 smoother carapax, and smooth hand. From H. pyriform,is 

 {Rhodia jpyriformis Bell) in its shorter rostrum, and in the 

 spines of the lateral margins of the carapax, which are smaller 

 and more numerous. 



Found at Manzanillo, West Coast of Mexico, by J. Xantus, 

 Esq. 



This species would come nnder the gronp named as a genus, 

 Bhodia, by Bell. This can scarcely be considered as distinct 

 from Ilerhstia, the only important differences being those of the 

 chelipeds. 



Herbstiella, nov. gen. 



This name is proposed for a group of small crabs allied to 

 Herhstia, which it resembles in form, but differs in having a 

 strong tooth on the inferior margin of the orbit between its ex- 

 ternal angle and the base of the antennae ; and in having three 

 teeth instead of two on the outer side of the basal joint of the 

 antennjB. It also differs in its longer chelipeds and spinous 

 meros-joint of the ambulatory feet. 



Ilerhstia depressa Stm., which inhabits the Caribbean Sea, 

 may be considered as the type of the genus IIe7'bstiella. It 

 also includes II. Edwardsii Bell, from the Gallapagos Islands, 

 and two new species described below. '' 



Herbstiella depressa. 



Herbstia dejn'essa Stimpson, Notes on N. American Crust. , p. 57 (Annals Lye. 

 Nat. Hist. N. Y., VII (1860) 185). 



In the description of this species quoted above, the praeorbital 

 teeth, orbits, and antennae are by a slip of the pen stated to be 

 " nearly as in II. condyliata " instead of " nearly as in II. 

 jparmfrons^^ which was intended ; the species alluded to as 



