ART. 16 WASPS OF THE SUBFAMILY BRACONINAE MUESEBECK 57 



the apex; first flegellar segment decidedly longer than scape and 

 pedicel combined and much longer than the second flagellar segment; 

 the apical segments of flagellum short; thorax long and narrow; 

 parapsidal grooves sharply impressed, finely foveolato; mesonotal 

 lobes usually a little more elevated and polished than in tibiator; 

 furrow in front of scutellum very broad in the middle, more or less 

 pitted; scutellum longer than broad at base, slightly convex; pro- 

 podeum mostly smooth, finely rugulose down the middle and along 

 the sides, and with two complete median longitudinal carinae that 

 meet at the base of propodeum and diverge gradually but very 

 slightly to the apex; propodeal spiracles very small, nearly circular; 

 pleura polished; mesopleural furrow usually broader and more 

 coarsely foveolate than in fihiator; spurs of hind tibiae nearly equal in 

 length, distinctly less than half the basitarsus; tarsal claws without 

 a basal tooth; second cubital cell four-sided, the second abscissa of 

 radius short but distinct; first abscissa of mediella a little longer 

 than the second; nervellus angled and emitting a distinct discoidella 

 from this angle; first abdominal tergite scarcely longer than broad 

 at apex, closely, rather strongly striate, and without two dorsal longi- 

 tudinal keels; remainder of abdomen polished, although the second ter- 

 gite sometimes has some weak striae originating in the shallow trans- 

 verse impression; ovipositor sheatlis as long as the body. Head, tho- 

 rax, and abdomen entirely black; wings strongly infumated; legs black, 

 with anterior and middle femora at apex, and their tibiae mostly, 

 brownish yellow; posterior tibiae broadly black at apex and with 

 a black annulus near base, brownish at extreme base and on the 

 middle; all tarsi black or blackish. 



Male. — Agrees with the description of the female except for sexual 

 characters. The antennae of the allotype are 23-segmented. 



Type.— Cat. No. 28691, U.S.N.M. 



Type locality. — Alameda Foothills, California. 



Allotype locality. — Hayward, California. 



Described from two female specimens collected at the tjrpe locality 

 by W. M. Giffard, and one male collected by M. C. Lane. The female 

 paratype has 23-segmented antennae. 



31. BASSUS TIBIATOR (Provancher) 



Agaihis tibiator Provancher, Natural. Canad., vol. 12, 1880, p. 177. 

 Agathis parvus Viereck, Trans. Amer. Ent. Soc, vol. 29, 1903, p. 96. 

 Bracon (Agathis) solidaginis Viereck, Bull. 22, Conn. Geol. and Nat. Hist. Survey, 

 1917 (1916), pp. 230 and 231. 



Type. — The type of tibiator is in the Museum of Public Instruction 

 at Quebec, Canada; that of parvus is in the Philadelphia Academy of 

 Science; and that oi solidaginis is in the agricultural experiment sta- 

 tion at New Haven. 



