6o CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



lar basin shallow, not well defined except near anterior 

 ocellus, where the raised ridges are marked by a flat angu- 

 lar ridge extending back of anterior ocellus, forming the 

 apex of a triangle; antennae with third and fourth seg- 

 ments subequal, fifth shorter; saw-guides narrow, gradually- 

 sloping to the apex above and convexly below t,o a 

 rounded point; body rufous, with the following parts white: 

 antennal segments six to nine, labrum, tegulse, basal half 

 of stigma, trochanters, and tarsi; with the following parts 

 black: antennal segments three to five, vertex and front in 

 great part, clypeus, thorax except scutellum, basal plates, 

 coxae, and apical half of posterior femora. Length lo mm. 



versicolor 

 Thorax in great part rufous with black markings; head with 

 the raised area between lateral ocelli flat and broken at 

 center by a line-like furrow; ocellar furrow distinct; ocel- 

 lar basin shallow, but with distinct walls, especially heavy 

 near anterior ocellus, and only faintly marked by the 

 shelf extending around anterior ocellus; antennce with third 

 segment slightly longer than fourth and fourth slightly 

 longer than fifth; saw-guides broad, slightly sloping above, 

 the lower margin sloping and rounded abruptly, obliquely 

 truncated at apex; body rufous, with the following parts 

 white: antennal segments six to nine, labrum, tegulae, 

 apices of coxae, trochanters, and tarsi; with the following 

 parts black: antennal segments four and five, postocellar 

 area, prothorax except collar, lateral lobes of mesonotum, 

 pectus broadly, coxae, apex of middle and posterior tibis, 



and apex of saw-guides. Length 14 mm testaceus 



4. Body color in general rufous; area between posterior ocelli 

 divided by a deep, angular furrow; ocellar furrow wanting 

 or indistinct; ocellar basin deep with heavy walls, walls 

 converging at middle, constricting the ocellar basin, furrow 

 extending around the anterior ocellus with rounded sides 

 and somewhat indistinct; antennae with segments broad 

 and flat, third and fourth subequal and very slightly longer 

 than fifth; saw-guides with the upper and lower margins 

 slightly converging, obliquely truncated at apex, and 

 bluntly rounded to a point above; body with the following 

 parts white: antennal segments six to nine, labrum, tegulae, 

 scutellum, trochanters, base of posterior femora, and tarsi; 

 with the following parts black: antennal segments four and 

 five, postocellar area, thorax except the parts named and 

 median lobe of mesonotum, bases of the anterior and 

 middle femora, apical half of the posterior femora, and 

 apex of posterior tibiae. Length 10-15 rnTi varianus 



