618 PROCEEDINGS OF THE ACADEMY OF [Nov., 



under pine straw and rotten wood in pine woods, while the one adult 

 female with capture datum was taken from under rubbish in field. 



The series of females shows quite a little individual variation in 

 general size, the extremes of the series of that sex measuring as follows : 



Length of body 13.5*mm., 17. mm. 



Length of pronotum 4 4.5 " 



Greatest width of pronotum 5 " 6.8 " 



Length of tegmen 4 " 4.8 " 



Greatest width of abdomen 6.9 " 8.2 " 



In coloration two points of variation are apparent: first, the teg- 

 mina of the females are decidedly blackish in some specimens, dull 

 brownish in others; second, the femora vary in the presence or absence, 

 or depth when present, of the blackish coloration, the majority of the 

 specimens having the femora ferrugineous like the tibiae. 



Isohnoptera johnscmi Kehn. 



A single adult female taken at Sulphur Springs. June 3, 1904, and 

 two adult males secured at Raleigh, May 24, 1905, and June 8. 1904, 

 are contained in the collection. The single Sulphur Springs specimens 

 was taken in low herbage near the edge of the Avoods. 



Isohnoptera pensylvanica (De Geer). 



Two males of this species taken at Sulphur Springs, May 25 and 30, 



1904, and one of the same sex from Raleigh, June 2, 1904, are in the 

 collection. In one of the Sulphur Springs specimens the blackish 

 area of the disk of the pronotum is very solid and extensive, crowding 

 the yellowish lateral borders to very narrow eduings. The other 

 Sulphur Springs individual and the Raleigh specimen have the more 

 normal type of pronotal coloration. 



The specimens taken at Sulphur Springs were captured at night 

 attracted to light. 



Isohnoptera divisa Saussure and Zehntner. 4 



The present collection includes five males and two females taken 

 or bred at Raleigh, June 9-15, 1904. and May 22. June 9 and July 6-8, 



1905. Data on the specimens inform us that both females were taken 

 by sugaring, one of the males flew into a house at night and three of 

 the same sex were bred. 



4 This is the species referred to by Brimley as /. couloniana (Ent. News, XIX, 

 p. l(j), on the basis of material identified by the senior author. (Saussure's 

 couloniana has since been shown by us (these Proceedings, 1910, p. 433) to belong 

 to another species. 



