26 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 78 



Front and middle legs rather pale yellow; hind femora with the 

 usual two dark annuli, base and tip distinctly yellow; hind tibiae 

 yellow at base, becoming blackish at middle, penultimate fifth dis- 

 tinctly whitish but with almost entirely black hair ; hind tarsi black. 



Wing almost hyaline, last section of fourth vein considerably 

 curved, but the first posterior cell not perceptibly wider than the 

 submarginal; tip of second vein slightly farther from base than 

 anterior end of hind crossvein. 



Length, 6.5 mm. to ovipositor, which is 4.5 mm. 



Described from one female, Laristal, Peru, received from Dr. O. 

 Krober. 



Ti/pe.— Female, Cat. No. 43034, U.S.N.M. 



STYLOGASTER PANAMENSIS, new species 



Female. — Head and thorax as in peruviana, including chaetotaxy. 



Abdomen considerably darker; first segment wholly blackish 

 above except at base, the lateral bristles all white and arising from 

 pale ground color; second segment dark brown, very obscurely yel- 

 low at base, the lateral bristles as in peruviana, but the ground color 

 is dark to the lateral margin except in front of the main row of 

 bristles; third, fourth, and fifth segments with rather indistinct and 

 obscure yellow lateral markings. Ovipositor longer than remainder 

 of abdomen, its short basal segment and the base of each of the 

 following ones yellow, the rest dark brown including apex. 



Legs as in petmviana, but the hind tibiae almost uniformly dark 

 yellow with only a slight trace of a median dark ring and a more 

 distinct apical infuscation. 



Wing rather indistinctly brownish, last section of fourth vein not 

 very broadly curved, toward apex quite straight ; first posterior cell 

 distinctly narrower than submarginal ; hind crossvein rather erect, 

 tip of second vein farther from base than anterior end of hind 

 crossvein. 



Length, about 4 mm. to ovipositor, which is 2.5 mm. 



Described from two females, Barro Colorado Island, Canal Zone 

 (N. Banks) ; type in Museum of Comparative Zoology. 



Paratype.— Female. Cat. No. 43035, U.S.N.M. 



STYLOGASTER ABDOMINALIS Krober 

 Stylogaster abdominnlis Kkober, Entom. Mitteilungen, vol. 3, 1914, p. 352. 



Female. — Front and vertex deep velvet black to lunule. Antennae 

 dark yellowish brown; first joint nearly square; second darker 

 apically, above almost black-brown; third about one and one-half 

 times the second, gradually narrowed, with a black -brown spot near 



