278 Say^s Descriptions of 



J* 



long as the first joint of the posterior tarsi, gradually 

 attenuating from the abdomen to the tip, and continuing 

 the curve of the tergum dowmvard. 



Length to the tip of the oviduct nearly one fifth of an 



inch. 



■i 



2. P. ahrupus. Black ; feet and first joints of the 

 antennae honey-yellow. 

 Inhabits Indiana. 



Sody polished, black: antenna rather short, with 

 close-set, short, obvious hairs ; two or three basal joints 

 very obscurely honey-yellow or piceous ; joints beyond 

 the middle not twice the length of their breadth : mouth 

 obscurely piceous : wings hyaline ; nervure of the radial 

 cellule not extended toward the middle of the wing ; dis- 

 coidal and anal nervures not obvious ; wing-scale dull 

 yellowish: feet honey-yellow: oviduct curved rapidly 

 downward, almost deflected, not gradually attenuated, 

 but somewhat cylindric at base, and hardly longer than 

 the basal joint of the posterior tarsi. 



Length one tenth of an inch. 



P. pallidus, Nob. (Contrib. Macl. Lye' vol. I. p. 



_ M 



This species is remarkable in having but a very short, 

 bifid process extending from the tip of the abdomen. 

 The sexes are not well understood. Jurine says that 

 the antennae have the same number of joints and that the 



termmate 



msect 



alike in both sexes. ! 

 suppose that the male has not been hitherto known. At 

 the extremity of its abdomen are two, very short, parallel 

 filiform processes, which are probably characteristic of the 

 male sex in this genus. It seems, therefore, possible that 



same 



