36 



Gcopinus incrassatus Dej. July 8, April i, 4. 



Specimens taken on April i had the fresh appearance of newly 

 emerged beetles. In July these beetles were sometimes found dead 

 on the surface of the blowsand. Like most Carabidae, Gcopinus is 

 probably predaceous, feeding upon the insects taking shelter under 

 the boards covering the burrows. The species lives under ground, 

 burrowing deeply in damp sandy localities. The burrows frequently 

 open under boards ; and when these are turned over the insect re- 

 treats downward within the burrow. In summer the insect is gen- 

 erally a few inches under ground most of the time, where the soil 

 is damp. Restricted to sand which is quite pure, it is not found in 

 the sandy loam of the flats in the Havana region. It is an important 

 index species of sandy regions. It seems to be independent of the 

 vegetation, except indirectly, as it is found under boards in large 

 tracts of blowsand, or in the middle of blowouts. 



Cratacanthus dubius Beauv. July 29. 



A brown convex carabid of moderate size, which is very common 

 in the eastern United States. Taken under a board in blowsand. 

 Apparently not restricted to any particular habitat. 



Nothopns zahroides Lee. June 7, July 25, August 14, 18, 22, Sept. 16. 

 This species is very characteristic of blowsand and blowouts, but 

 was not taken during the present studies. In 1903 and 1905 it was 

 quite common in the Devil's Neck, Devil's Hole, and other parts of 

 the sand region, as shown by Hart's records. Knaus records it from 

 the Arkansas River sand dunes in Kansas ; Wickham records it from 

 the northern parts of New Mexico and Arizona (Bull. Lab. Nat. 

 Hist., Univ. of Iowa, 1896: 157). Blatchley records one specimen 

 {Nothopns grossus Say) from Pine, Indiana, in the lake dune re- 

 gion, taken by Wolcott. It is a typical Upper Sonoran species, and 

 is characteristic of sandy habitats. It is rather peculiar that this 

 species was not seen in 1910 and 191 1 in the sand region studied, as 

 it was common there before that time. 



Agonoderus pallipes Fab. April i. 



One of our most common carabids, but apparently scarce in the 

 sand, only one having been taken (under a board). Not a sand 

 species. 



Har pains caliginosus Fab. June 28, April 8. 



The food of this species is largely vegetable, seeds of ragweed 

 seeming to be in favor. It roams about in grass and stubble, taking 

 shelter at times under boards. It seems not to be greatly restricted iu 



