Dec, 1904 ] SCHAEFFER : NeW CoLEOPTERA. 211 



longitudinally impressed ; surface coarsely punctate, strigose. Thorax a little wider 

 than long, sides feebly arcuate, in some specimens nearly straight, side margin sinuate, 

 hind angles rectangular, carinate ; disk moderately convex, with a deep median im- 

 pression, composed of two broad foveae united by a groove, lateral oblique depression 

 moderately deep, surface coarsely punctate, transversely strigose. Scutellum trans- 

 versely carinate. Elytra feebly sinuate behind the humeri, broadened behind the 

 middle, narrowing to apex, each tip emarginate and serrulate ; disk slightly depressed 

 with a faint indication of a costa on each side, surface subgranulate with pubescent 

 spaces exactly as in lecontei : body beneath sparsely pubescent; prosternal lobe 

 broadly emarginate, intercoxal process narrower between the coxae, dilated behind 

 and truncate apex. Abdomen sparsely punctate, vertical portion of the first two seg- 

 ments not much denser than at middle ; pygidium feebly carinate, carina not extend- 

 ing to apex, claws cleft at middle forming a broad tooth. Length, 4-5-5 mni- 



Brownsville, Texas (Esperanza Ranch and Tolusa, May, June 

 and July). Four specimens in the Museum of the Brooklyn Institute. 



Dedicated to my friend and companion Mr. Jacob Doll in remem- 

 brance of the interesting trip made together to the lower Rio Grande 

 region. 



This species has to be placed near impexiis in Dr. Horn's table, 

 from which it differs in the emarginate prosternal lobe, different 

 markings, the emarginate elytral apices and smaller size. From 

 lecontei which it very closely resembles it differs in having the front 

 impressed and the elytral apices einarginate. 



Rhaeboscelis texana, new species. 



Elongate, slightly shorter and more robust than tenuis, thorax and elytra brown 

 with slight metallic lustre. Head finely punctured with coarser not very closely 

 placed punctures intermixed, front deeply impressed ; antennae serrate from the sixth 

 jomt. Thorax as long as broad, sides strongly deflexed in front, less strongly near 

 base, side margin not visible from above, apex feebly arcuate, base strongly bisinuate, 

 median lobe truncate, disk impressed at middle, sides and base, the two on the basal 

 lobe foveae-like, the two outer ones more elongate, the latter a short distance from 

 basal angles, surface transversely, arcuately strigose. Elytra about two and one half 

 times as long as the thorax, sides slightly narrowing to middle, then arcuate and nar- 

 rowing to the apex, apices truncate, basal impressions large, a slight depression be- 

 fore the humeral costa, sides declinous to about the middle, surface rugosely sculp- 

 tured. Antennal groove deep, abdomen shining, with very fine-punctured, densely 

 placed and some larger ones more sparsely placed. Pygidium carinate at middle, 

 with a sharply limited oblique channel on each side, continued along the carina not 

 quite to apex. Length, 3 5-4 mm. 



Brownsville, Texas (Esperanza Ranch). Four specimens in the 

 Museum of the Brooklyn Institute. As compared with tenuis this 

 species is shorter, more robust, thorax more convex, with the side 



