54 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



dusky. Abtloineii as long as the thorax, polished, terminating 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 antennsB are nearly thrice .as long as the head, filiforn), 

 tapering at tips, the scape shorter, the joints of the tlagellum a little 

 longer. 



Habitat. — Indiana, Florida, and Virginia. 



Specimens in Coll. Ashniead. 



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. eentrnttis) are remarkable for the 

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

 arcuated, but points obliquely inwards." 



BethyluB centratuh Say. 

 Lee. Ed. Say's Works, ii, p. 727; Ashm. Ent. Am., in, p: 97; Cress. Syn. Hym., p. 247. 



9 . Length S"""'. Polished black, with some scattered hairs. Head 

 across the eyes fully as wide as long. Antennse 12 jointed, brownish- 

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

 lum a little longer than thick. Mesonotum 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 tibise and tarsi brown or piceous. Abdomen ovate, scarcely as 

 long as the thorax, i>olished black, with a slight projecting point at 

 apex. 



Habitat. — Indiana, Colorado, and Florida. 



Specimens in Coll. Ashmead. 



EUPSENELLA Westwood. 



Thes. Ent. Oxon. p. 168 (1874). 



(Type, E. agilia Westw.) 



(PI. IV, Fig. 1, <?.) 



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



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



Antennse 13-jointed, rather short, the scape tlii kened, the 12 follow- 

 ing joints short nearly equal. 

 Maxillary palpi 6 jointed; labial palpi .3-jointed. 

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

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

 metathorax transverse, the posterior angles rounded, between punc- 

 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 di.^coidal cell is very long, extending beyond the 

 apex of the marginal cell. 



