32G PROCEEDIiSrGS of the national museum vol.106 



its length (in prefiosus Cusliman and crossi (Blanchard) the nerviilus 

 postf ureal by about its own length). The anterior margin of the 

 scutellar groove is carinate as in naivaii (Ashmead), but unless the 

 light is right it may escape notice since the carina projects posteriori}'' 

 instead of dorsally. 



B. ornatus vaiies from dark brownish to blackish, Avith yellowish 

 markings of thorax varying considerably in extent, especially on the 

 propodeum. In the specimens studied the propodeum varies from 

 all black, or black with a small brownish spot on each side of the 

 petiolar area just belov/ the basal transverse carina, to mostly yellow 

 with only the basal and lateral plem-al areas dark. In the European 

 specimen the dark areas are brov/ nish as well as blackish and the yellow 

 of the propodeum a more reddish yellow. In some specimens the 

 petiolar area is all j'ellowish while in others it is more or less infuscate. 

 The flagellum of the antenna has 24 or 25 segments in the female, 

 and 25 in the male. Of the two males studied only one had the 

 antennae unbroken. The male squamae that tend to be slender 

 apicalh' in the Brachycyrtini are more so in this species and strongly 

 resemble those of Pseudischnus males in this respect. 



B. ornatus is holarctic in distribution. It has been taken in both 

 Europe and North America. The North American specimens before 

 me are from Robson, British Columbia; Mayo and Takoma Park, Md. ; 

 Hocking Count}^, Ohio; and near Roosevelt Lake, Ariz. The type of 

 chrysopae was reared from an unknown chrj^sopid. 



Brachycyrtns australis Roman 



Brachycyrtus auslralis Roman, Ark. Zool., vol. 9, No. 9, p. 6, 1915 (?). 

 Brachycyrtus australis Roman, Cushman, Proc. U. S. Nat. Mus., vol. 84, p. 18, 

 1936. 



Dr. Malaise sent for study the type specimen, the antennae of which 

 were broken. Roman listed the number of flagellar segments as 27. 

 The apical segments remaining are longer and less thick in proportion 

 than those of 7>. ornatus. This little species, as noted in the key, has 

 fewer dark markings than any of the other species; the markings on 

 the head and thorax, especially, being light brov/nish or testaceous. 

 Roman's complete description notes the small oval propodeal spir- 

 acles. /). australis is the onl}^ species of Brachcyrtus vvith short-oval 

 spiracles. The rest of the species of the genus have elongate-oval 

 propodeal spiracles. It might also be noted that the malar space 

 is shorter than that of B. ornatus, being about one-third the basal 

 width of mandible. 



Knov»-]i only from a single specimxcn taken at Broome, Australia, 

 June 1911. 



