in the Museum of the Smithsonian Institution. 105 



Edwards, judging from the description in the " Histoire Nat- 

 nrelle des Crnstaces " in sculpture ; — the surface of the carapax 

 is not "couverte de petits tubercles sondes entre eux par doubles 

 rang^es." Also, the notch of the meros of the external maxilli- 

 peds is not at the middle of the anterior margin. Milne-Ed- 

 wards 'gives no locality for his vei'micidata. 



Alphonse Milne-Edwards regards this species as belonging to 

 the Xantho-^YOW^. 



Xaiitliofles Xaiitusii, nov. sp. 



In this small species the carapax is smooth on the middle and jdos- 

 terior portions of its svirface, bnt in front it is areolated and rough- 

 ened with somewhat squamiform granules and slight transverse cren- 

 ulated ridges. The antero-lateral margiia is armed with four teeth, 

 not including the angle of the orbit, between which and the first 

 tooth there is a granulated concavity. Front little projecting, and 

 bordered by a thin lamella ; outline of lobes somewhat concave. Fis- 

 sures of orbit very slight. Subhepatic region irregularly granulated. 

 Basal joint of the external antennae short, scarcely reaching the pro- 

 cess of the front. In the chelif)eds, the carpus and hand are strongly 

 granulated above and on tlie whole outer surface ; carpus with a deep 

 sulcus near and parallel to its extero-anterior margin ; hand with three 

 slight longitudinal sulci, one on the tipper and two on the outer sur- 

 face. Smaller cheliped sparsely short-setose. Ambulatory feet setose 

 and roughened above with minute asperities. 



The dimensions of a male specimen are : Length of cai'apax, 0.25 ; 

 breadth, 0.35 inch. 



It resembles somewhat X. granosimmius Dana, a Polynesian 

 species, but the carapax is narrower and more convex, and the 

 lobes of the front are concave instead of convex. 



It is very common at Cape St. Lucas, judging from the large 

 number collected by Mr. John Xantiis. 



Xaiitliocles inseiilpta, nov. sp. 



Very small. Carajiax naked, areolated ; anterior areolets rather 

 strongly protuberant. Surface very minutely granulated. Antero- 



