62 THE CANADIAN ENTOMOLOGIST. | 
is large, fuscous and whitish at base ; abdomen much narrower than in ©. 
Length .12 inch. 
ffab.—Pennsylvania. Bred, along with numerous specimens of Meso- 
chorus scitulus, Cress., from a bunch of lemon-yellow cocoons (probably 
those of a Microgaster), found attached to a blade of grass. 
3. PEZOMACHUS TANTILLUS. | JV. sp.—@.—Slender; head large, 
piceous-black ; mandibles and palpi testaceous ; antennz about three- 
fourths the length of body, pale testaceous, thickened and dusky beyond 
middle ; thorax brown, prothorax testaceous, nodes subequal, posterior 
one rather more gibbous ; legs long, slender, luteous; abdomen longer 
than head and thorax, oblong-ovate beyond first segment, subdepressed, 
fuscous ; first segment narrow, slightly dilated at apex and testaceous : 
ovipositor rather longer than first abdominal segment. Length .o9 inch. 
ffab.—Illinois. One specimen. About the size of mznzmus, Walsh, 
but more slender in form and with a larger head. 
4. PEZOMACHUS MEABILIS. JV. 5p.—.— Head and thorax reddish- 
brown, face paler ; antennæ pale luteous, dusky at tips; nodes of thorax 
subequal, posterior one more gibbous, disk and sides of anterior node 
marked with testaceous ; legs pale testaceous, the femora and tibiæ varied 
with dusky ; abdomen piceous-black, not longer than head and thorax, 
ovate and convex beyond first segment and shining ; first segment narrow, 
slightly dilated behind middle, with a pale testaceous band at apex ; apical 
margin of second segment slightly pale ; ovipositor as long as first abdo- 
minal segment. Length .12 inch. Bes 
ffab.—Illinois. One specimen. Same form as Peéfitiz, but smaller, 
more slender, and with much paler legs. 
5. PEZOMACHUS OBSCURUS. JV. sf.—9.—Robust, closely and mr 
nutely punctured ; head large, blackish, face and cheeks yellowish-brown, 
palpi pale; antennz pale testaceous, dusky at tips; thorax yellowish, 
varied with fuscous on posterior face of the nodes and laterally, nodes 
subequal ; legs dull luteous, tips of the coxæ and trochanters pale, poster- 
ior femora and tibiæ, and base of all the coxæ, more or less tinged with. 
fuscous ; abdomen robust, convex, short ovate beyond first segment, 
piceous ; first segment narrow, dull yellowish, second fuscous, with apical 
margin dull yellowish; ovipositor rather longer than first abdominal 
segment. Length .13 inch. 
Hab.—New Jersey. 
6. PEZOMACHUS CANADENSIS. JV. sf.— © .— Head black ; mandibles 
rufous ; palpi pale ; antennz black, base of flagellum yellowish; thorax 
