NORTH OF MEXICO. 293 



Epipleurse and elytra] fold roughlj sculptured. 



Elytra costate, \\ itli interstitial smooth granules. c <> s t ;i t u - . 



Elytra with coarse erosions and elevated smooth patches, erosus. 

 Elytra rounded mi the sides, noi margined. 



Epipleurse narrow, suddenly dilated at base, elytra smooth. las vis. 



Epipleurse gradually dilated at base. 



Body rounded, oval. difficilis. 



Body inflated, nearly globose. 

 Elj tra noi pubescent. 



Epipleurse distinctly defined, nearlj smooth. m urica tus . 



Epipleurse noi distinctly defined, verj densely punc- 



tulate. (1 i 1 a t a t u - . 



Ely tra sparsely pubescent. 



Epipleurse distinctly defined, nearly smooth. puherulus. 



Body elongate oval. 



Sub-opaque, ely tra granulate. ]> r o d actus . 



Shining, elytra smooth or faintly punctured. 



(i noius, 



1-;. ro bustus, Lee, N. Spec, page 1 12. 



From the Island ofSan Clemente, on the coasl of California. 

 Length .10 inch. 



E. re t iculatu -. L/C.. Ann. Lye. 5 132. 



/. iphosis reticulata, Say, Joum. lead. ■'. 250. 



I>i> Icraus reticulatus, I.e.-.. Class. Coll. N. A., p. 223. 



Net rare in Arizona and New Mexico. This species \ tries considerably in sculpture 

 and outline. The typical form i- elongate oval; many, however, are in my cabinel col- 

 lected bj myselfin Arizona, in which the form is oboval, with the elytra somewhat in- 

 flated. In the inflated specimen the thorax is much narrowed in front, being scarcelj 

 wider between the anterior angles than that between the hind angles. Specimens from 

 western Kansas or Colorado are comparatively smooth, and the reticulations delicate; 

 those from Arizona are sub-i o I iti . though never coarsi 1\ punctured and granulose, as in 

 the following species. Length . 50—. ti - ,' inch. 



ostatus, rounded, oval, convex, black, sub-opaque, thorax beiug finely and sparsely punctured "ii the « 1 1 — » - , 

 on the sides, margin not thickened; elytra sub-costate, interstices coarsel) punc- 

 tured, and with smooth, small, rounded tubercles; indexed portion of elytra densely and coarsely punctured. Length 

 .06, breadth . W inch. 



The humeral angle of the epipleura may be easily discovered from above, It ing 

 more promineul in this and the succeeding than in any other of our species. 

 Collected by Mr. Wm. M. Gabb on the peninsula of Lower California. 



AM Kill. PHILOSO. 80C— VOL. XIV.- 7 I 



