THEODORE H. FRISON 17 



setaceous impressions; anterior swelling and ventral portion finely punctate, 

 |3olished; cauflo-dorsal angle with a crescentic row of punctures, ventral 

 l)unctures largest; sulcus prominent. Metunapleura with a ventral coarsely 

 punctate area, limited above by a polished, impunctate area; dorsad of this 

 latter an area of large, irregular, somewhat elongate reticulations; dorso- 

 cephalic angle, ventrad and caudad of articulation of hind wings densely 

 setaceous; ob]ic|ue sulcus very shallow. Truncature nearly flat, coarsely 

 reticular, with ninnerous golden setae. The articulation of petiole far ceph- 

 alad of metacoxal fossae, truncature gradually sloping off from above to the 

 metacoxal fossae. Metasternal processes long, slender, nearly parallel through- 

 out. Posterior tibia and posterior metatarsus with prominent longitudinal 

 rows of aciculae among the dense setae; posterior coxa above polished, sparsely, 

 finely punctate. Inner posterior tibial spur much longer than outer, about 

 one-half the length of posterior metatarsus; posterior metatarsus longer than 

 remaining tarsal segments together; tooth of claw much longer and stouter 

 than apical raj*. Wings hyaline, front wings with three closed cells. 



Petiole somewhat less than three times as long as distance from point of 

 articulation to cephahc margin of propodeum; with a band of reticulate 

 punctures on lateral aspect, dorsum with some small punctures, sparsely 

 setaceous. Abdomen compressed, polished, with a few pale setae on caudo- 

 dorsal margins of segments; ovipositor lighter in color than abdomen, at apex 

 with numerous short seta^. 



Easily separable from the three previously descri])ed species 

 of this genus from Peru because of the presence of a carina 

 separating the face from the malar space. Other species having 

 certain characters in common are B. basalis Schlettcrer from 

 Coloml)ia, B. amazonica Roman from Brazil and B. guyanensis 

 Cameron from British Guiana. 



One specimen, the holotype, collected April 10, 1920, at 

 Yurimaguas, Peru. 



Brachygaster angustata new species 



Male. Length, 4.5 mm. 



Head above antennae, ocicijiital orbits, flagellum, pedicel, thorax, propodeum, 

 petiole, abdomen and hind legs, black. Head below antennae, proximal 

 portion of mandibles, scape, and anterior legs, fulvous. 



Head below antennae densely and rather finely punctate; face separated 

 from malar space bj- a weakly elevated setaceous carina; occipital orbits, 

 somewhat wider below than above, about as wide below as length of scape, 

 polished, with a few small scattered pimctures; malar spiicQ about as long as 

 scape, over onc'-third as long as eye, polished, with several small scattered 

 punctures; mandibles polished, weakly punctate. Head above antennae 

 nearly flat, densely and finely punctate; area behind ocelli jjolished, with a 

 few small, scattered {)unctures. Head viewed from above broader than 

 thorax, transversely subquadrate, broader than long, but slightly convex in 



TKANS. AM. ENT. SOC, XLVUI. 



