34 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



2. Body black, with the following parts rufous: head, ex- 



cept labrum, a spot around bases of antennae, mandibles, 

 greater part of lateral lobes of mesonotum, scutellum, post- 

 scutellum, and anterior tibiae and tarsi; lateral margin 

 of abdominal segments with a fine yellow line; wings in- 

 fuscated. Length 12 mm brunniceps 



Body, in female, black, with the following parts yellowish 

 white: spot on bases of mandibles, spot on cheeks, narrow 

 line from the caudal end of eyes to the occiput where it 

 expands and extends along the caudal margin of the pos- 

 terior orbits to near their middle, two ovate spots on 

 vertex, a narrow line on pronotum, a line on suture 

 between median and lateral lobes, a spot on each lateral 

 lobe, and an irregular spot on the lateral margin of each 

 abdominal segment; tibiae and anterior tarsi rufous; wings 

 hyaline, with a clouded spot extending across wings behind 

 the stigma. Male differs in having the antennae usually 

 rufous at middle, a yellowish spot at caudal end of each 

 eye, mandibles in great part yellow, spots on abdominal 

 segments limited to a line, and all the tibiae and tarsi 



yellowish rufous. Length 16 mm maculiventris 



3. Pleurae and sternum black, with an oblique pale mark on 



pleurae; legs in part marked with bla?ck 6 



Pleurae and sternum wholly rufous or ochraceous; legs en- 

 tirely rufous or ochraceous 4 



4. Head with the summit of the declivous area at the base of 



antennae broadly rounded; body rufous, with tips of an- 

 tennae infuscated, and tergum, except a line along the late- 

 ral margin, black; median fovea an elongate pit situated 

 midway between the bases of antennae and ocelli; basal 



segment of antennae rufous. Length 14 mm ochrocera 



Head with the summit of the declivous area at the base of 

 antennae elevated into a distinct transverse ridge; basal 

 segment of the antennae marked with black 



5. Head with the postocellar area elevated above ocelli; eye 



margin angulated opposite ocelli; median fovea a deep 

 depression with distinct boundaries, nearer to the ocelli 

 than to the bases of antennae; head with indefinite black 

 lines, more pronounced in region of ocelli; median lobe of 

 mesonotum, scutellum and metathorax in part, and a nar- 

 row band on the base of abdominal segments, black. 



Length 14 mm angulata 



Head with postocellar area not elevated above ocelli; eye 

 margin not angulated opposite ocelli; median fovea an 

 elongate slit nearer to the ocelli than to the bases of 

 antennae; head with indefinite black lines in the region of 



