Vol. 1] Bradley. — The Taxonomy of the Masarid Wasps 389 



CC. Antenna of the female composed of 12 segments, inerassate apically, 

 but not forming a club; that of the male elongate, reaching the 

 scutellum, segments 3 to 6 linear, 7 to 10 inerassate, concave be- 

 neath; 11 and 12 scarcely separable Masariella Brauns. 



BB. Scape and pedicel both globular, the latter at least one-half as long as 

 the former. 



C. Venter convex Quartinia Gribodo. 



CC. Venter flat or concave Celonites Latreille. 



AAAA. Maxillary paljxis consisting of but a single very short segment, a mere 

 tubercle easily entirely overlooked. 

 B. Middle tibia with 2 apical spurs, spur of posterior tibia not bifid; labial 

 palpus of the male 4-segmented, the apical segment very short; seventh 

 ventral segment with a median apical notch, not deep and by no means 

 reaching to the sixth segment; antenna of the male long, the third, 

 fourth, and fifth segments linear, the fifth somewhat thickened, the 

 sixth more strongly so, the seventh to twelfth segments almost indis- 

 tinguishably fused into a club which is convex beneath; claws with a 

 small median tooth; last dorsal segment, seen from the side, acute, from 



above ending in 2 stout teeth Masaris Fabricius. 



BB. Middle tibia with 1 apical spur; spur of posterior tibia bifid; labial 

 palpus 1- to 3-segmented; apical margin of seventh ventral segment 

 of the male either truncate or with a very deep quadrate notch reach- 

 ing to the sixth segment; antenna of the ^ variously formed; claws 

 simple; last dorsal segment, seen from the side obtusely curved, or 

 truncate; in the latter case the truncature is margined by two strong 

 inferior and two strong superior teeth, in the former case there are 

 no teeth, but, seen from above, it is weakly notched at apex. 

 C. Antenna of the male and of the female dissimilar, that of the male 

 much the longer, the apex in each sex always with a club, and at 

 least the first segment of the flagellum and usually more, much 

 longer than broad; labial palpus in the male consisting of from 1 to 

 3 segments, in the latter case the last segment shorter than the 

 preceding; in the female consisting of three segments, the first 

 long and flattened, the second short, the third much longer thstn 

 the second, falcate, very slender and acute, and ending in two stout 

 spines; th*- last dorsal segment is much curved ventrad, its apical 

 portion vertically truncate, the truncature bordered above and 

 below by a pair of strong teeth or tubercles, the latter placed 

 closer together than the former pair; apical margin of the seventh 

 ventral segment with a very deep, usually rectangular emargina- 

 tion, reaching basad to beneath the sixth segment; squama always 

 lamelliform and obtuse, never ending in a spine or hook; uncus 

 never broad and flat, but slender and usually acute, and often de- 

 curved at tip Pseudomasaris Ashmead. 



CC. Antenna of the male and of the female similar, except that that of 

 the latter has 11, of the former, 12 segments, but slightly ineras- 

 sate, the segments of the flagellum all as broad and mostly broader 



