194 PROCEEDENGS OF THE NATIONAL MUSEUM vol. 104 



pairs or not, ever found in the same burrow. No beetle was ever 

 found feediQg or associated with any possible food. 



Just before the conclusion of this work, beside the Carthage- 

 Southern Pines airport on the Carthage road, a large number of 

 jerrugineus were taken by digging in early September in the wasteland 

 between the airport and the road. There was no sign of feeding or 

 mating, mention being made of the area merely because of the number 

 oi jerrugineus found there. 



Despite the lack of success in procuring any larvae, a few inter- 

 esting facts were obtained during the three years. The adult beetles 

 hved for almost a year. A number of burrows were marked in 

 September and later dug during the winter. The quiescent adult 

 beetles were found singly at the bottom of their vertical burrows in 

 November and again in March. There they remained untQ early 

 June, at which time fresh burrows were found. One interesting fact 

 was noted — the older the beetle, the darker brown it was. Speci- 

 mens taken in June in some instances were almost black. Later in 

 July of 1951 only hghtly colored males were found in fresh burrows. 



Some of the fresh June burrows were marked and left undisturbed. 

 By mid-July the cages containing adults collected the previous fall 

 were dug up. One female, out of four that were active on June 28, 

 was still alive in one cage, but there was no sign of any brood activity. 

 In another cage, which was merely an enclosure with no bottom, none 

 of the adults or fragments could be found. Every shovelful of sand 

 under the cage was sifted to a depth of 7 feet with no results. 



The burrows which were marked in June were then dug. In the 

 latter part of July, three different holes were made following burrows 

 to a depth of as much as 11 feet with no results. 



The investigator finally had to conclude that the beetles either went 

 to great depths or changed their burrowing habits and went sideways 

 for a number of feet. The latter supposition would seem to be the 

 probable one. 



No fresh burrows were seen in July 1952. On Sept. 12, 1952, the 

 colony at the Carthage airport was found and, out of 48 beetles col- 

 lected, there were 8 males and 12 females that were fairly dark and 

 16 males and 12 females that were quite teneral, appearing to be 

 freshly emerged. All of the burrows, as usual, were from 14 inches 

 to 3K feet deep, with an average depth of 28 inches. 



If I were asked to hazard a guess as to the time that the larvae could 

 be found, I would say that, according to the above information, the 

 larvae of Jerrugineus should occur during June, July, and perhaps 

 August. The problem stiU remains to find them. 



Specimens of jerrugineus have been collected in Florida, Georgia, 

 Mississippi, North Carohna, and South Carolina. 



