262 ENTOMOLOGICAL NEWS. [October, 



the past Summer I have taken over fifteen hundred Catocala 

 from one fourteen-acre piece of mixed timber, oak, chestnut, 

 ash, etc. This does not include imperfect ones, or those slightly 

 damaged, that were allowed to escape, or were discarded on care- 

 ful examination. I cut a path completely around the inside of 

 woods, about fifty feet from edge, then selected trees thirty or 

 forty yards apart, and used the commonest molasses and vinegar. 

 I had in all about one hundred trees thus marked. In the three 

 months I have taken out of the woods thirty-five species, with 

 four more yet to determine. The following is my list: 



CATOCALA. 



nubi/is, mannorata, habilis, 



elonymp/ia, parta, paleogama, 



arnica, unijuga, var. phalanga, 



gracilis, briseis, neogama, 



grynea, concumbens, subnata, 



simi/is, car a, piatri.r, 



formula, amatrix, Judith, 



polygama, relicfa, robinsoni, 



teroga-iiia, tristis, retecta, 



ultronia, epione, flebilis, 



coccinata, antinympha, desperata, 



ilia, serena, obscura. 



o 



On the Differences Between the Larvae of Cecrita bilineata 

 and Heterocampa manteo. 



By HARRISON G. DYAR. 



The larvae of the two species named above resemble each other 

 so closely as to be almost indistinguishable. They do not differ 

 in structure and the pattern of markings, though variable in both 

 is identical. The larvae are green, a reddish or a black band on 

 the side of the head bordered with white. On the body are dorsal, 

 subdorsal and stigmatal lines, the first two white and rather broad, 

 the latter yellow and narrow. From this simple coloration the 

 following variations occur: Patches of mottled, purplish brown 

 appear in. the dorsal space on joints 5, 7, loand 12, spreading to 

 the adjoining segments in more heavily marked examples and 

 finally filling in the whole space between the subdorsal lines, and 

 in addition forming a lateral projection on joints 7 and 10 below 

 the normal course of the subdorsal line. This curious variation 

 occurs in both species. 



