516 ' PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 47. 



of hind wings interstitial; legs feebly spined; all claws cleft. Rufo- 

 ferruginous; flagellum, sutures of the mesothorax, mesosternum, pro- 

 podeum dorsally, apical margins of the first and second tergites and 

 the base of the first tergite black; wings hyaline, extreme tip dusky; 

 venation strong, black. 



Gualan, Guatemala. One male collected February 12, 1912, W. P. 

 Cockerell. 



Type.— C&t. No. 16028, U.S.N.M. 



EPISYRON PORUS (Fox). 



One specimen from Quirigua, Guatemala. 



STIZUS GODMANI Cameron. 



Male and female from Quirigua, Guatemala; two males and one 

 female from Gualan, Guatemala, on flowers of Iresine paniculata. 



MICROBEMBEX TARSALIS, new species. 



This species falls in Handlirsch's table nearest to monodonta, but is 

 not monodonta or any other subspecies which has been described 

 under this head. 



Female. — Length, 12 mm. Labrum sharply tapering to a narrow, 

 truncate apex; clypeus strongly convex medianly; the inner margins 

 of the eyes sUghtly converging towards the clypeus; head finely 

 granular with a few punctures interspread, vertex depressed later- 

 ally; third antennal jomt distinctly longer than the fourth; meso- 

 scutum shining, with distinct, fine, separated punctures; scutum 

 similarly punctured; propodeum finely granular; tarsal comb well 

 defined; second and third tarsal joints, reduced beneath into strong 

 tubercule; abdomen shining, under high magnification, punctato- 

 reticulate. Black; anterior margin of the clypeus, sides of the labrum 

 posterior margin of the pronotum, tubercules, tegulae, spot above, 

 spot on the sides of the scutellum, metanotum, transverse spot on the 

 dorsal apex of the propodeum; apical bands on the first, second, 

 third, fourth, and fifth tergites, yellow or yellowish ivhite; legs black; 

 apices of the femora, bases of the tibiae yellow; tarsi ferruguious; 

 wings hyaline; venation pale brown, costa and stigma dark brown. 



Hale. — Length, 12 mm. This agTees well with the above de- 

 scription of the female in its general structure and m color markings 

 except that the colors are greenish yellow; the mesoscutum has two 

 median yellow dots; the bands on the tergite are broader, that on the 

 first indentate medianly, that on the second, third, and fourth sUghtly 

 produced medianly; the tooth on the second sternite low, with a short 

 hook posteriorly; apical sternite sharply triangular in outhne. 



Quhigua, Guatemala, and Gualan, Guatemala. Described from 

 one female, type, collected at flowers of Ipomoea sidaefolia, February 

 20, 1912; and one male, allotype, collected at Gualan, February 16, 

 1912, by W. P. Cockerell. 



Type.— Cat. No. 16027, U.S.N.M. 



