I 



REVISION OF ELEODIINI BLAISDELL. 401 



Oak Creek, September, E. G. Smith, collector. AVarren Knaiis) ; 

 New Mexico (Highrolls, May). 



Number of specimens studied, 32. 



Type. — Cat. No. 12232, U.S.N.M.: co-types in my collection. 



Tiij>e -locality. — Chiricahua Mountains (males), Santa Kita Moun- 

 tains (female), Arizona. Collectors Hubbard and Schwarz. 



Salient typt-chamctet's. — Smooth: punctures simple; thorax siil)- 

 (}uadrate, widest just before the middle, some^Yhat narrowed behind; 

 disc finely and rather sparsely punctulate; ai)ex feebly and broadly 

 emarginate; sides evenly and moderately arcuate, convergent behind 

 the middle; apical angles obtuse, very slightly rounded at tip; basal 

 angles obtuse, not rounded nor in the least prominent. Elytra widest 

 at the middle; humeri obtuse with angle distinct but small; disc mod- 

 erately convex, striato-punctate; strial punctures rather small and 

 quite closely placed and not impressed; series rather distant, inter- 

 stitial series of fine and more distantly spaced punctules, more or less 

 irregular in arrangement; both series more irregular laterally and on 

 apex. 



Male subfusiform oval. Elytra distinctly narrowed in apical 

 fourth, disc gradually declivous behind. 



Female ovate. Elytra rather broadly oval, arcuately declivous at 

 apex. 



D'iayno.stlc characters. — This species is quite distinct from nujrina 

 in its shining surface, smooth sculpturing and more dei)ressed form; 

 the females are less elongate. 



tSchicarzii is dull in lustre and more robust and not depressed, 

 besides the sculpturing is subasperate; the sides of the pronotum is 

 more dilated and as a whole transverse, with edge more strongly 

 rounded and less convergent behind. 



Nevadensis is opaque; both sexes are typically subcylindrical ; legs 

 slender and the ventral surface distinctly but sparsely pubescent ; the 

 thorax is smaller. 



Dissimilis has heretofore been referred to some six species. There 

 is nothing like it in the LeConte collection. 



A single male before me answers quite exactly to Colonel Casey's 

 description of nitidus and it is possible that my name may have to 

 be suppressed and Casey's substituted. He refers uitidvs to near 

 lonciicollis. 



If dissimilis is nitidus no one who has compared my examples in 

 the East has recognized this relationship, but it has invariably been 

 associated with nigrina. The types are in the U. S. National Museum 

 collection, and anyone can make comparisons. 



Genercd observations. — The middle lobe of the mentum is very 

 small and triangular, the lateral lobes entirely exposed, more so than 

 59780— Bull. 63—09 26 



