Vol.1] Bradley. — The Taxonomij of the Masarid Wasps 407 



truncate, the truncate portion from a caudal view nearly rectangular, 

 margined above and below by a pair of strong, tooth-like processes, the 

 inferior pair closer together than the superior, sometimes an additional 

 pair of tubercles cephalad of the upper pair ; second ventral with a 

 low tubercle, the third with a strong, variously shaped, process ; seventh 

 ventral segment deeply divided by a usually square broad notch. 

 Squama and ramus fused, the former lamelliform, rarely thickened, 

 curved, often densely ciliate beneath ; sagitta and volsella small, closely 

 applied to the ramus; uncus usually long and slender, decurved at 

 apex, with a pair of barbs at base, sometimes thick and without barbs 

 at base. 



5. Eyes deeply emarginate, the emargination wide and rounded at 

 apex, eyes at least 3 times as far apart above as the distance between 

 the hind ocelli ; mandibles bluntly rounded or truncate at apex, with 

 2 denticulations on the inner margin ; labial palpi 3-segmented. the 

 first flattened, the second short, bent at right angles to the second, the 

 third much longer, falcate, very slender, tipped with 2 stout spines. 

 Antennae shorter than the width of the head ; scape more than twice 

 as long as pedicel ; third segment linear, as long as 3 or 4 following 

 segments united, segments 4 to 7 increasingly thickened, the seventh 

 broader than long, segments 8 to 12 fused into an oval club, convex 

 above and below, the divisions distinguishable, but that between the 

 eleventh and twelfth sometimes very indistinctly so. 



Abdomen unarmed. The segments not constricted at base, the 

 seventh tergite and sternite with rounded apical margins. In other 

 respects similar to the male. 



Type. — Masaiis occidentaUs Ashmead, by original designation. 



Habitat. — Southwestern United States. 



Key to the Subgeneea op PSEUDOMASAEIS 



A. Posterior metatarsus of the male arcuate, produced at a]iex on the inner side 

 into a lobe bearing a prominent crest of eiliae; segments 6 and 7 of the 

 antennae of the male much longer than wide, the club shaped like the 

 inverted bowl of a spoon, concave beneath; anterior tarsus of the male 

 ciliate; anterior tibia and middle femur and tibia of the male contorted, 

 of the female merely flattened beneath, the tibiae constricted at base; 

 posterolateral angles of the propodeum alate; last dorsal segment of the 

 male with 6 tubercles; female with a transverse carina between the an- 

 tennae; squama very thick, the apex rugose Toryna, n. subg. 



AA. Posterior metatarsus straight or nearly so, without an apical lobe; club of 

 the male convex beneath, or if concave it is short ovate, not spoonlike, 

 the seventh segment as broad as long, or the sixth and seventh segments 

 form part of the club, the inner margin of which is serrate, and the 

 seventh segment mvxch broader than long; female without a carina be- 

 tween the antennae; last dorsal segment of the male with 4 tubercles; 

 squama laminate or slightly thickened, the apex even. 

 B. Eyes of the male reaching the posterior margin of the head, touching 

 each other on the vertex, or separated by a distance less than that 

 between the posterior ocelli; these touching the eyes, 3 times as far 



