NORTH AMERICAN GEOTRUPINAE — ^HOWDEN 207 



lege, Ohio State University, Oregon State College, U. S. National 

 Museum, University of Arizona, University of Kansas, University of 

 Michigan, and in the private collections of O. L. Cartwright, B. K. 

 Dozier, C. A. Frost, A. Martinez, G. H. Nelson, M, Robinson, and 

 the writer. 



Variation in specimens of the type series is moderate. Length 

 varies from 6.5 to 10 mm., width from 4.3 to 6 mm. Color ranges 

 from an even reddish brown to black. The area of intergradation 

 with lazarus lazarus is not too clear, but in general specimens from 

 areas not bordering the Gulf of Mexico are intermediate in many of 

 their characteristics. Specimens from localities bordering the East 

 Coast tend more toward lazarus lazarus. Surprisingly, some speci- 

 mens from Miami, Fla., exhibit many of the characters of lazarus 

 lazarus. E. lazarus subtropicus appears to be more a Gulf and inland 

 sandhill form, ranging northward in inland sandy areas to Southern 

 Pines, N. C, Occasional northern specimens appear to exhibit most 

 of the characters of subtropicus. 



Generally, specimens of subtropicus can be easily distinguished by 

 the very small antennal club, shape of eye canthus (pi. 2, fig. 6), 

 evenly spaced elytral intervals between sutural interval and umbone, 

 short clypeal horn in the male, blackish color, few punctures on 

 vertex of head, and deep punctures of elytral striae. Some of these 

 characters can occasionally be found either singly or in some combi- 

 nation in specimens of lazarus lazarus scattered throughout the coun- 

 try, particularly on the East Coast. However, further study may 

 prove subtropicus to be a distinct species, for in a few cases both 

 lazarus and subtropicus have been recorded from the same locality, 

 while the specimens themselves show little intergradation. I have 

 never collected both forms or seen them from any one small area — a 

 colony seeming to represent only one subspecies and never both. If 

 it were not for the fact that occasionally a few characteristics of 

 subtropicus appear in the varied population of lazarus lazarus, I 

 would consider it a separate species. 



Eucanthus lazarus subtropicus is generally found in sandy, rather 

 open habitats. Adults were collected in their burrow in every month 

 of the year, but were less frequently found in June than in other 

 months. Specimens were often attracted to light, but were never 

 collected by baits or chemical attractants. No adults were ever 

 seen to feed nor were they collected near any material they seemingly 

 might use for food. 



Most of my observations on this subspecies were made at Southern 

 Pines, N. C. It was here that Manee's (1908b, p. 459) observations 

 on Eucanthus were made. He mentioned that they (presumably 

 subtropicus) dug verticle burrows in the sand and he included a 



