136 S. A. ROHWER. 



runs to L. citraphis Ashm., but may be known from this at 

 once by the entirely black antennae. Some of the females 

 which have lighter legs might be said to go to eragrostaphidis 

 Ashm., or to coquilletti Ashm., but they may be known at 

 once from these species by the pallid stigma and other char- 

 acters. The male in Dr. Ashmead's table (loc. cit.) runs out 

 because the antennas are sixteen-jointed. 



The specimens mounted in balsam run to the genus Lipo- 

 lexis Forster. In this genus they go to chenopodiapkidis 

 Ashm. The female may be separated from this species by 

 the black abdomen and the darker trochanters. The male 

 may be separated by having the apical joint of the middle 

 tarsi longer than the preceeding. Males may be found which 

 will go to salicaphidis Ashm., if so they may be separated 

 from this species by the white stigma. 



This spring, when Prof. T. D. A. Cockerell and I worked on 

 this Braconid, Prof. Cockerell wrote to Dr. L. O. Howard 

 and asked if Lipo lexis chenopdiaphidis Ashm. could not be a 

 Lysiphlebus. If this were true it was thought that perhaps 

 our species was chenopodiapkidis; however, it may be sep- 

 arated from this species by the character given abovr. 



Mr. J. C. Crawford, through the kindness of Dr. Howard, 

 examined the type of Lipolexis chenodiaphidis and reports the 

 following : 



" The type specimens of Lipolexis chenopodiapkidis do not 

 show the transverse cubital nervure ; the 9 examined by Ash- 

 mead shows 13-jointed antennas, while another shows 14; the 

 £ has 16, but in one specimen has only 15." 



Unless there are characters other than the number of joints 

 to the antennas it would seem, from the above, that the three 

 species assigned to the genus Lipolexis are the same. Con- 

 sidering the number of joints to the antennas in both sexes, 

 Lysiphlebus crawfordii Roh. forms a new group, in which the 

 male has three more joints than the female. As a rule the 

 male only has two more. 



I regret to state that the only male in my possession was, by 

 accident, badly broken. The above description was drawn 

 up before this happened. Types in the author's collection. 

 Specimens were also sent to the U. S. National Museum before 

 this description was drawn up. 



