536 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.45. 



HETEROSPILUS LEPTOSTYLI, new species. 



This species is related to Heterospilus anthaxise Ashmead, but 

 may be separated from that species by the absence of striee at the 

 extreme base of the fourth tergite, by having the notauli complete 

 and not subfoveolate. in having the mesoscutum more shining, in the 

 shining propodeum and the yellow pronotum. 



Female. — Length 2.5 mm. Head sinning, polished, impunctate; 

 third and fourth antennal joints subequal in length; mesoscutum 

 shining, very finely granular; notauli complete, sharply defined, 

 not foveolate; scutellum shining; propodeum shining, with strong 

 median carina which joins the anterior apex of the diamond-shaped 

 areola; ovipositor slightly more than half the length of the abdomen. 

 Black; mandibles except apices, antennae, pronotum, legs, second 

 and extreme base of the third tergites yellowish; wings hyaline, 

 iridescent; venation pale brown. 



Male. — Length 2.5 mm. Besides the usual sexual characters the 

 male is like the female. 



According to the paratypes this species may vary to the extent of 

 having the flagellum dusky. 



Tryon, North Carolina. Described from three females and two 

 males recorded under the Bureau of Entomology Number Hopk. 

 U. S. 3045c, which refers to a note stating that this species is parasitic 

 on the larvae of Leptostylus collaris m chestnut. Insects bred by 

 W. F. Fiske. 



TV^e.— Gat. No. 15510, U.S.N.M. 



C^NOPACHYS SCOLYTIVORA, Viereck and Rohwer, new species. 



Apparently similar to the genotype of this formerly monotypic 

 and monobasic genus, but distinguished, however, by the thickened 

 portion of the cubitus beyond the second transverse cubitus being 

 only half or less than half the length of the corresponding part of the 

 radius, and in the 20-jointed antennae. 



Male. — Length 3 mm. Front with the excavation finely, trans- 

 versely striate; the raised portion of the front with large, some- 

 times confluent punctures; vertex and posterior orbits very finely 

 reticulate; third antennal jomt much shorter than the fourth, fourth 

 and fifth subequal; scutum and prescutum opaque, finely granular, 

 prescutum finely reticulate; notauli well defined, V-d posteriorly and 

 finely foveolate; scutellum finely granular; propodeum opaque, 

 finely granular with lateral regions well defined; a complete median 

 carina well defined and joining at apex of the elongate, diamond- 

 shaped area; the lateral areas defined posteriorly by oblique carinas; 

 first abdominal segment about one-fifth longer than its apical width 

 with strong irregular striations; second and following abdominal 



