212 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



the anterior margin, on the sHghtly explanate side margins, on the 

 area behind the tubercles, and on a thin median strip from the carina 

 to the basal margin. The punctures near the lateral margins have 

 about half the rim elevated as in the other species, giving them a 

 tuberculate appearance. Very minute secondary punctures are 

 scattered over the entire pronotum. Crenate punctures of elytral 

 striae shallow, usually separated by about twice their diameter. 

 Elytral punctures without setae except those on the margins and 

 epipleura, where a few of the punctures bear long reddish setae. Five 

 well developed striae between sutural interval and umbone. The 

 second and foiu-th intervals, which are slightly wider than the adjacent 

 ones, each sometimes having a row of very small punctures. Side 

 margins of pronotum less explanate than in the other species of 

 Eucanthus. Humerus of elytron with tubercle at edge lacking or only 

 vaguely indicated. Foremargin of eye canthus (gena) at right angle 

 to side, with angle evenly rounded. The lamellae of the antenna! club 

 noticeably longer than the eye (similar to lazarus lazarus). Male 

 with pronounced clypeal horn, noticeably longer than wide, bifid at 

 tip. Poorly developed transverse carina on vertex. Pronotal modifi- 

 cation with transverse carina only barely indicated, lateral limiting 

 grooves shallow, but lateral pointed carinae well developed. In the 

 female the transverse carina of the vertex is a bifm'cate tubercle of 

 equal height with the clypeal horn or sometimes even higher. The 

 pronotal carinae are less developed than in the males and the coarse 

 pronotal punctures are larger and denser. 



Robinson differentiates the species from lazarus lazarus by the 

 following characters: Eye canthus (gena) more angular, lateral mar- 

 gins of the thorax less explanate, sinuation of hind angle less pro- 

 nounced, coarse punctures of pronotum slightly less pronounced than 

 those of other species, small punctures of elytral striae, transverse 

 pronotal grooves absent or barely indicated and transverse carina 

 poorly defined. It might be added that the tubercle of the elytral 

 humerus absent or barely indicated appears to be an additional 

 character not mentioned by Robinson. Many of the characters 

 mentioned above intergrade with lazarus lazarus; some specimens 

 from Manitoba, Canada, and Thomas County, Nebr., show most of 

 the characterists given for greeni. Upon further study greeni may 

 prove to have subspecific rather than specific rank. 



Specimens examined: 6 males, 9 females (1 male, New Mexico or 

 Arizona (CAS)). 



UNITED STATES 



ARIZONA: 1 male. Granito Mountain, Yavapai County, Sept. 19, 1929, Kusche 



(CAS). 



