98 Notes on North AmericaM Crustacea^ 



Length of the carapax in a female, 0.52 ; breadth, 0.42 

 inch. 



Found at Cape St. Lucas bj John Xantus, Esq. 



Etll>leiirocloil, nov. gen. 



Allied to Epialtus, but with a depressed and uneven cara- 

 pax. The antero-lateral angles of the carapax are strongly 

 prominent, forming projecting teeth directed forward, almost 

 parallel to the axis of the body. The ambulatory feet are 

 strongly prehensile, with dentigerous penult joints. The size 

 is small. 



Eupleiirodoii trifiircatBas, nov. sp. 



Carapax with a profovmd depression in front of the gastric region, 

 and one on either side of the cardiac, which with the gastric region 

 forms a prominent median ridge. Branchial region depressed, with 

 a tubercle near the postero-latei-al angle. Teeth and prominences of 

 the carapax generally setose. Rostrum half as long as the post- 

 frontal part of the carapax, and one-third as broad as long, flattened, 

 truncate, and emarginate at the extremity. Tooth of the antero- 

 lateral angle half as long as the rostrum and curving forward : the 

 distance between the tips of these teeth equals the greatest width of 

 the carapax, and is one-third greater than the middle width. There 

 is a small tooth on the lateral margin behind the antero-lateral 

 angle. Orbital margin arched but not toothed. Feet "\\T.th an angular 

 ordentated carpal joint. 



Of this species I have seen only one specimen, a female, the dimen- 

 sions of which are: Length of carapax, 0.31 ; breadth, between tips 

 of antero-lateral teeth, 0.25 inch. 



Found at Cape St. Lucas by John Xantus, Esq. 

 IiSiiiil>riti§ excavatiis, nov. sp. 



This species resembles Parthenope in general appearance. The 

 carapax is irregularly hexagonal, and one-sixth hroader than long, 

 Antero-lateral margin concave, and forming an angle with the outer 

 lateral margin, which is nearly straight and parallel with the axis of 



