HY ROWLAND E. TURNER. 215 



labial palpi four-jointed. Mandibles bidentate or simple. Pygi- 

 dium usually simple, but sometimes the epipygium is narrowly 

 produced at the apex, with two parallel longitudinal carinfe on 

 the disc. T^^pe, K. itiiicolor Guer. 



Key to the Species of Rhagi(/af<ter, 

 J" (^ . i. Head transverse, not large. 



A. Hypopygium tridentate. 



a. Apical aculeus produced very much beyond the lateral 

 spines, which are very short. 

 «•-. With a shining triangular space on the clypeus. Entirely 

 black. 

 a^. Angles of the prothorax not prominent. 



a*. The shining space on the clypeus very sparsely 



punctured. i?. unicolor Guer. 



6*. The shining space on the clypeus more strongly 



punctured. E. unicolor st. mandilndaris Westw. 



h^. Angles of the prothorax prominent. 



R. unicolor st. ephi2)X)iger Guer. 

 h. Lateral spines of the hypopygium long, 

 a-. Abdomen shallowly and sparsely punctured. Wings 

 fusco-violaceous. 

 ft^. Second recurrent nervure received by the third cubital 

 cell close to the base, 

 a*. Median segment truncate, sparsely punctured. 



R. auriceps, u.sp. 

 h^. Median segment subtruncate, strongly punctured. 



R. fuscipenni'^, Sm. 

 h^. Second recurrent nervure received at some distance 

 from the base of the third cubital cell. 



R. appjroximatiLs, n.sp. 

 hr.. Abdomen closely and finely punctured. Wings subhyaline. 



R. crassipunctatus, n.sp. 



B. Hypopygium without lateral spines. 



a. Scutellum truncate at the apex, 

 ft'-. Wings fulvo-hyaline. Robust. R. fiilripennis, n.s]}. 



h'-. Wings hyaline. Slender, R. e/ongafm, n.sp. 



/>. Scutellum subacute at the apex. 

 a^. Wings fusco-hyaline. R. gracilior, n.sp. 



ii. Head large. 



A. Prothorax produced at the anterior angles. 



ft. Head not produced behind the eyes. Epipygium broadly 



rounded. /,*. obtiisvs Sm. 



