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



Head with a distinct antennal furrow extending from the cly- 

 peus to the occiput ; collar black 3 



2. Abdomen with venter white or rufous; body black, with the 



following parts white: clypeus, labrum, collar, tegulae, 

 a spot on pleurae, last dorsal abdominal segment, and legs 

 except the posterior tarsi; tergum of abdomen black, with 

 a median broad triangular rufous spot on each seg- 

 ment, the spots frequently united, forming an irregular 

 band; antennae with third and fourth segments subequal; 

 median fovea an elongate, shallow groove; ocellar basin 



wanting. Length 7 mm apertus 



Abdomen with venter black; body black, with the following 

 parts white: fine line on collar, tegulae sometimes, an 

 interrogation-shaped point on pleurae (sometimes want- 

 ing), and legs, except middle and posterior tarsi in female 

 and posterior tibiae and tarsi in male; antennae with third 

 segment longer than fourth; median fovea a broadly ex- 

 panding pit just above supraclypeal area; ocellar basin 

 wanting. Length 8 mm inornatus 



3. Femora wholly rufous; body black, with the following parts 



white: labrum usually, tegulae, apices of coxae, trochanters, 

 and fourth abdominal segment in female for the greater 

 part; legs, except the parts named, rufous; antennae with 

 third and fourth segments subequal; ocellar basin an elon- 

 gate depressed area extending from anterior ocellus to 

 supraclypeal area, angular above, broadly roundly ex- 

 panded along the sides, and pointed below, with median 

 fovea at its apex; ocellar furrow distinct, connected with 

 ocellar basin, indicated by a minute notch; saw-guides with 

 upper margins straight and lower margins broadly convexly 



rounded to a point at apex. Length 8-10 mm mellipes 



Femora of anterior and middle legs at least in great part 

 black 4 



4. Femora all in great part black; body black, with the following 



parts white: tegulae, costa at base, posterior trochanters, 

 anterior and middle femora at apex in front, basal fourth 

 of tibiae, and fourth abdominal segment in female; legs, 

 with coxae and anterior and middle trochanters black, all 

 the other parts not named, rufous; antennae with third seg- 

 ment longer than fourth, and fourth and fifth subequal; 

 median fovea a broad pit just above supraclypeal area; 

 ocellar basin an ovate depressed area separated from the 

 median fovea by a distinct transverse ridge and extending 

 for some distance behind the lateral ocelli as a fine groove; 

 ocellar furrow wanting; saw-guides convex above and 

 broadly convexly rounded below, and extending to a 



bluntly rounded point at apex above. Length 8 mm 



cinctipes 



