1918] CrambincE of North America 53 



to feed until they were supplied with damp sand in which they 

 at once constructed retreats. They lay dormant in these 

 retreats for weeks and the last of them died the following 

 January without further change. The larvce resulting from the 

 South Dakota moth showed this same habit though in a more 

 pronounced degree for none of them pupated in the fall and all 

 died during the winter. If these overwintering larvse could 

 have been kept under exactly suitable conditions they would 

 without much doubt have pupated in the spring and formed 

 the first generation of moths. Attempts were made to breed 

 the moths which emerged in the cages but no fertile eggs were 

 obtained. 



A consideration of the foregoing data together with the 

 dates of collection of the moths in the National Museum indi- 

 cate that in the latitude of Tennessee and southward there are 

 two complete generations each year, the moths of the first 

 appearing during the first half of June and of the second about 

 two months later, in August. The collection of other moths at 

 Wellington, August 8 and 15, by Mr. C. L. Scott, lends further 

 support to this hypothesis. Somewhat farther north there is a 

 complete first and a partial second generation, some of the 

 offspring of the first remaining as larvae until the following 

 spring. As far north as South Dakota it is likely that few if 

 any of the larvse resulting from moths of the first generation 

 pupate the same year. It appears that even in Texas there are 

 but two generations in a year as no moths are recorded from 

 there later than July 22. It is possible, however, that there 

 is a complete or partial third generation in which case further 

 collections should show moths appearing there in September. 



Habits of Moths. Of the habits of the moths httle is 

 known. Those taken at Chattanooga were flying in a dry 

 grassy field in company with C. caliginosellns which they so 

 closely resembled in manner of flight and general coloration 

 that the presence of two species was not suspected until they 

 were examined later. At Wellington the moths, perfect unrubbed 

 specimens, were attracted to a hght trap. Eight of the nineteen 

 specimens in the National Museum were taken at light. It is 

 an indication of the scarcity of the species that with its positive 

 phototropic tendencies so strongly marked it is not more 

 commonly met with in collections. 



