OF WASHINGTON, VOLUME XVI, 1914 105 



tergite; first tergite testaceous with the anterior angle of the triangle some- 

 what infuscated, the furrows not crenulate, the areas shagreened; second 

 tergite with the median embossed area distinct only basally its sides di- 

 verging rapidly, this and the base of the third tergite rcticulatoly rough- 

 ened, the third apically and the fourth and fifth entirely granulurly rough- 

 ened; exserted portion of ovipositor half as long as abdomen. 



Male: Differs from female principally in its smaller size and in having 

 the four anterior coxae and femora largely blackish, and the embossed area 

 of the second tergite indistinct. 



A single female paratype agrees in all respects with the type. 

 Host. -Platynota sp. 

 Type locality. Hollywood, Calif. 

 Type Cat. U. S. N. M. No. 18276. 



Described from the above three specimens which were reared 

 May 12, 1913, by J. E. Graf of the Bureau of Entomology. 



Habrobracon xanthonotus (Ashm.) 



Bracon xanthonotus Ashmead, Proc. U. S. Nat. Mus., XI, 18SS, p. 618. 



The only specimens of this species in the National Museum 

 are the 14 females of the type series and two others. The type 

 male is apparently lost. From its small size and the fact that 

 it had fewer antennal joints than the female it must have been a 

 dwarf and poorly developed specimen. 



The only characters that I have been able to discover that 

 will separate this from the following species are variable, and I 

 believe that the two are conspecific, but hesitate to reduce hop- 

 kinsi Vier. to synonymy because of the paucity of intergrades 

 between the two types. One of the specimens agrees with 

 hopkinsi in facial markings. 



Habrobracon hopkinsi Vier. 



Habrobracon hopkinsi Vier., Proc. U. S. Nat. Mus., vol. 38, 1910, p. 380. 

 Habrobracon mali Vier., Proc. U. S. Nat. Mus., vol. 44, 1913, p. 641. 



The character in which Viereck considered his mali to be allied 

 with xanthonotus, as indicated in his description of mali, and 

 in which it differs from hopkinsi, is found in a manuscript table 

 to the species, and consists in the possession of testaceous mark- 

 ings on the mesoscutum. His description of the species con- 

 sists of a statement of- the differences between it and xantho- 

 notus. All of the characters used are those which an examination 

 of a large number of specimens of several of the other species 

 of the genus shows to be subject to extreme variation. This is 

 especially true of the color patterns of the thorax and abdomen 

 and the number of antennal joints. 



