AMERICAN HYMENOPTERA. 171 



ferruginous; annulus on flagellum, anterior orbits, clypeus, scutelluni, 

 four anterior coxaj and spot at tip of abdomen, white. Length S 

 .30— .37 inch. 



This may be the % of terminalis. 



121. hospitus, Cress. Trans. Am. Ent. Soc. i, p. .30G, % 9. 



Hah. — Can., 111. A small black species with legs and three basal 

 segments of abdomen ferruginous, the latter finely punctured and 

 shining; annulus on antennae, scutellum and face of % yellowish; 

 antenna3 9 thickened towards tips, base ferruginous, middle whitish, 

 apex black, third joint about twice longer than broad and longer than 

 fourth ; antennae % long, black above, fulvous beneath ; tips of pos- 

 terior femora, and of their tibiae more or less black ; wings subhyaline. 

 Length % 9 .30 inch. 



122. cervulus, Prov. Nat. Can. vii, p. 83, % . 



Hah. — Canada. A small black species with second and third ab- 

 dominal segments pale ferruginous, and the tibiae and tarsi more or 

 less yellowish ; wings subhyaline ; head and antennae entirely black, 

 the latter short and sometimes pale at tips beneath. Length % .30 — 

 .35 inch. 



123. decoratus, Prov. Nat. Can. vii, p. 83, S . 



Ilalj. — Cau., Mass. Same size and general appearance of cervulus, 

 but has ferruginous legs, and the sides of face and clypeus are white. 

 Length % .30 inch. 



124. lachrymans, Prov. Nat. Can. vii, p. 78, % . 



Bab. — Can., N. H. Closely re.sen)bles cervulus but has the face, 

 clypeus and scutellum yellow ; same size. 



12.5. citrifrons, Cress. Trans. Am. Ent. Soc. i, p. 307, S . 



J/ab. — Ct., Pa. A small black species, with face, scutellum, and 

 the four anterior coxae and trochanters pale yellow ; the legs including 

 posterior coxa; and second and third abdominal segments yellow fer- 

 ruginous ; apical half of posterior femora and tips of their tibiae black ; 

 antennae long and fulvous, darker above; wings clear. Length % 

 .20 inch. 



126. limbifrons, Cress. Proc. Ent. Soc. Phil, iii, p. 182, % . 



Hah. — Colorado. A small slender black species, with the legs 

 except base, and abdomen except apex, ferruginous; lateral margins 

 of face and dot on each side of clypeus, white; wings clear; post- 

 petiole narrow, punctured, gastrocoeli small, deep, punctiform. Length 

 I .30 inch. 



