182 E. T, CRESSON. 



182. cestus, Cress. Proc. Cal. Acad. 1877. 



IlaJi. — Vancouver's Island. A subrobust ferruginous species with 

 broad black band at base of third abdominal segment; antennae dusky 

 at tips; wings yellowish, subfasciate with fuscous before stigma. 

 Length 9 .40 inch. 



183. vicinus, Cress. Proc. Ent. Soc. Phil, iii, p. 169, 9 . 



Hah. — Illinois. A subrobust ferruginous species, with tips of an- 

 tennae, tips of posterior femora and of their tibiae, and narrow basal 

 margin of abdominal segments three and four, black; scutellum yel- 

 lowish ; antennae short, with white annulus, basal joints ferruginous, 

 joints beyond annulus subdilated ; wings subhyaline. Length 9 ,40 

 inch. 



184. brevipennis, Cress. Proc. Ent. Soc. Phil, iii, p. 174, 9 . 

 var. obsoletus, Kiley, 9th. Mo. Rep. p. 55. 



Hab. — Can., Pa., Col. A short robust dull ferruginous species, 

 with dusky wings and basal margins of abdominal segments narrowly 

 black; antenujB robust with short thick-set joints, apex dusky or 

 black; the type from Colorado has shortened wings, and in the 

 variety obsoletus the black bands on abdomen are obsolete. Length 

 9 .40— .45 inch. 

 This is a parasite on Leucania alhilinea. 



185. longulus, Cress. Proc. Ent. Soc. Phil, iii, p. 171, S . 



Ilab. — Can., Col., N. Mex., Cal., Van. An elongate fulvo-ferrugin- 

 ous species, with antennae, sutures of thorax, generally the pleura be- 

 neath, tips of posterior tibia), and basal margin of abdominal segments, 

 more or less black; wings yellowish-hyaline; face, scape beneath, .scu- 

 tellum and legs in front yellowish; postpetiole minutely aciculated, 

 gastrocoeli rather deep. Length %, .50 — .GO inch. 



186. volens. 



Isclinus volens, Cress. Proc. Ent. Soc. Phil, iii, p. 192, S . 

 Ilab. — Can., N. Y., Va., Ga., 111. Closely resembles longulus, but 

 separated at once by the smooth polished postpetiole and subobsolete 

 gastrocoeli; the antennae are dusky above and pale beneath, with 

 a more or less distinct pale yellowish annulus; the four anterior 

 coxae and trochanters are whitish ; wings hyaline. Length % .55 — 

 .60 inch. 



187. propitius, Cress. Trans. Am. Ent. Soc. iv, p. 156, % . 



Hub. — Texas, (coll. Belfrage). Yellowish-ferruginous; face, clypeus, 

 anterior orbits and mandibles, pale yellow; antenna) pale ferruginous 



