112 DESCRIPTIOXS OF NEW SPECIES. 



EUSATTIXS LEG. 

 Our species of Eusatlus may be thus arranged : 



A. Elytra limited on the side by a distinct margin ; 



Epipleurse occupying the whole of the inflexed portion. ROBUSTUS. 

 Epipleurse narrow, suddenly dilated at the base. RETICCLATUS. 



B. Elytra deflexed on the sides and not margined ; 



Epipleurae narrow, suddenly dilated at the base. L;EVIS. 



Epipleurse gradually dilated towards the base ; 



a. Body rounded oval ; 



Elytra obsoletely costate, with scattered granules. DIFFICILIS. 

 Elytra obsoletely costate, with shallow foveae. CONVEXUS. 



b. Body inflated, nearly globose ; 



Elytra not pubescent, squamosely granulated ; 



Epipleurse distinctly defined, nearly smooth. SUTRICATUS. 



Epipleurae less defined, densely punctulate. DILATATUS. 



Elytra sparsely punctured, granulated, and pubescent. PUBERULUS. 



c. Body elongate oval ; 



Subopaque, elytra sparsely granulated. PRODUCTUS. 



Shining, elytra sparsely granulated. DUBIUS. 



The Mexican Eu. nitidipennis belongs to group (a), and differs 

 from the two species above mentioned by the elytra not being at 

 all costate, with shallow scattered punctures. 



In group (b) the anterior tibiae are much more dilated and 

 prolonged than in the other groups. 



381. Eu. rolmstus. Rotundato-ovalis, convexus, niger subopacus, 

 thorace subtiliter parce punctulato, margine crassiore ; elytris subtiliter 

 insequaliter granulatis, granulis versus apicem distinctioribus, epipleuris 

 latis, margine lateral! definitis. Long. -70 ; lat. '43. 



Island of San Clemente, California ; Dr. J. G. Cooper. Nearly 

 as broad as Eu. reticulatus, and like it having the elytra distinctly 

 margined at the sides ; but, unlike the other species, the epipleurae 

 occupy the whole of the iuflexed portion : the marginal line runs 

 therefore to the extreme tip, instead of becoming obsolete near 

 the tip, as in Eu. reticulatus, where the margin is distinct from 

 the epipleural limit. The anterior tibise are considerably dilated 

 and obliquely prolonged at tip. The sculpture of the elytra is 



datis ; elytris punctulatis, substriatis, versus marginem parce foveatis. 

 Long. -50 ; lat. -27. 



Differs from B. floridanus by less convex form, less rounded sides of 

 thorax, and differently sculptured elytra. 



