140 CHARLES W. LENG. 



mile from the river, overgrown with short grass; Dr. Williston re- 

 ports it abundant in western Kansas and southern Wyoming, fre- 

 quenting upper banks some distance from water among Buffalo grass. 



€. echo Casey, 1897, Ann. N. Y. Acad. Sci. ix, p. 298. 

 Length 10.8-12 mm.=.43-.48 inch. 



Habitat.— i^hoves of Great Salt Lake, Utah. 



Dark brown-bronze, beneath bluish green ; elytral markings broad, 

 consisting of C-shape humeral lunule, middle band entering perpen- 

 dicularly, bent at a right angle and almost reaching the suture, and 

 an apical lunule. Head rugose, bald in front, labrum imperfectly 

 three toothed, interocular striae fine and numerous, reaching almost 

 to the labrum ; thorax as in preceding, but less hairy ; elytra coarsely 

 and uniformly punctate, margin not serrulate. The hair beneath 

 distributed as in preceding. 



Apparently confined to the locality stated. My specimens were 

 collected by Mr. G. Wesley Browning, April 28th, who very kindly 

 made several excursions in search of the species. 



The author compares this species with senilis, but may have been 

 working with erroneously determined material, as senilis is often 

 misrepresented in collections. 



WiLLisTONi group. 



Thorax convex, not margined, subquadrate, palpi of male pale at base; elytra 

 less convex, markings broad sometimes connected at margin, dilated 

 in front of the middle in 2i punctate not granulate, apical margin 

 minutely serrulate ; surface shining. 



Bronze, with connected markings Willistoiii. 



Bluish green, with disconnected markings pseudoseililis. 



C Willistoiii Lee, 1879, Bull. U. S. Geol. Geog. Survey, v, 507 ; Schaupp, I. c, 

 p. 91, pi. 3, fig. 60 {the figure is too brightly colored). 

 Length 10.5-14 mm.=.42-.56 inch. 



Habitat. — Lake Corao, Wyoming, June. 



Brown or green bronze, beneath metallic green or blue, elytral 

 markings broad, consisting of humeral lunule, middle band entering 

 perpendicularly, rectangularly bent and very long, almost reaching 

 the apical lunule at the suture and apical lunule, all connected at 

 the margin, the connection with the apical lunule very narrow. 

 Head rugose, interocular strise fine and numerous, almost reaching 

 the labrum, which is imperfectly three-toothed, scarcely hairy in 

 front; thorax coarsely punctate, subquadrate; impressions deep, 



