54 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



dusky. Abdomen as loug' as the thorax, polished, teiminatiug- in a 

 stylus-like point, with a few long hairs. 



The S differs only in its antennal characters and in having a broader 

 head. The anteuniB are nearly thrice as long as the head, filiform, 

 tapering" at tips, the scape shorter, the joints of the flagelluni a little 

 longer. 



Habitat. — Indiana, Florida, and Virginia, 



Specimens in Coll. Ashmead. 



I have had no difficulty in recognizing this and the following species 

 of Say's from his remarks at the end of his description, as he says : 

 "This species and the following' {B. centrafus) are remarkable for the 

 brevity of the inflected tip of the radial nervure, which is not at all 

 arcuated, but points obliquely inwards." 



Bethylus centratus Say. 

 Lee. Ed. Say's Works, ii, p. 727 ; Asliui. Eut. Am., iii, p. 97 ; Cress. Syn. Hym., p. 247. 



$ . Length 3""^. Polished black, with some scattered hairs. Head 

 across the eyes fully as wide as long. Antenna} 12-Jointed, brownish- 

 piceous, the scape black, tlie pedicel yellowish, the joints of the flagel- 

 lum a little longer than thick. IMesonotum with 2 more or less dis- 

 tinct furrows. Metathorax closely, finely punctured, with raised lon- 

 gitudinal lines. Wings subhyaline, the venation brown. Legs black, 

 the tibia; and tarsi brown or piceous. Abdomen ovate, scarcely as 

 long as the thorax, polished black, with a sliglit projecting point at 

 apex. 



Habitat, — Indiana, Colorado, and Florida. 



Specimens in Coll. Ashmead. 



EUPSENELLA Westwood. 



Thes. Eut. Oxoii. p. 168 (1874). 



(Type E. (((/His Westw.) 



(PL IV, Fig. 1, S-) 



, Head oblong, subconvex, broader than the thorax ; clypeus angu- 

 lated at the middle; eyes smooth; ocelli 3, distinct. 



Antenna' 13-jointed, rather short, the scape thickened, the 12 follow- 

 ing- joints short nearly equal. 



Maxillary palpi 6 jointed; labial palpi 3-jointed. 



Mandibles stout, 5- or 6-dentate, the teeth obtuse. 



Thorax: prothorax large, semicircular; mesonotum with 2 furrows; 

 metathorax transverse, the posterior angles rounded, between jjunc- 

 tured with a semicircular impression at base and a slender median 

 carina. 



Front wings with a large stigma, a complete marginal, one submar- 

 ginal, two discoidal and two basal cells; the radial vein is recurved at 

 apex and the second discoidal cell is very long, extending beyond the 

 apex of the marginal cell. 



