no CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Frontal crest entire, not broken by median fovea; sides 

 of ocellar basin clearly distinguishable; ocellar furrow 

 scarcely indicated; body black, with legs beyond knees 

 white; clypeus transverse, deeply and roundly emarginate, 

 lateral angles prominent; median fovea large, broad, shield- 

 shaped; third and fourth antennal segments subequal. 

 Length 7 mm solitaris 



P. simplicicornis (Norton). Cladhis simplicicornis Norton. 

 New Haven (A. E. V.) 



*P. acericaulis IMacGillivray. Larva a borer in the leaf- 

 stems of the sugar maple. New Haven, Stonington (W. E. 

 B.) ; Southington, New Haven (B. H. W.). 



*P. aequalis (Norton). Cladius cequalis Norton. Farmington 

 (E. N.). 



°P. solitaris (Dyar). Larva feeds on alder. 



Cladius Illiger, 



C. pectinicornis Fourcroy. Cladius isomera Norton. How- 

 ard, Insect Book, PI. xii, Fig. 19. 



Body black, with the legs beyond the knees and the costa 

 whitish ; third segment of the antenna shorter than the fourth ; 

 clypeus transverse, broad, shallowly emarginate ; pentagonal area 

 indistinct ; frontal crest distinct and broadly broken ; median fo- 

 vea broad, flat, indistinct; antennse of the male with projections 

 at the apex of segments three to six, largest at base. Length 6-8 

 mm. Larva feeds on rose. 



Farmington (E. N.) ; New Haven (H. L. V.), 6, 29 July, 

 1910 (W. E. B.) ; Orange, 21 May, 191 1 (A. B. C). 



Trichiocampus Hartig. 



T. viminalis Fallen. Auliacomcrus lutesccns Lintner. 



Abdomen rufous ; body black, with the antennae, the legs, the 

 pleurse broadly, and the abdomen, rufous ; third segment of the 

 antennae not as long as the fourth ; pentagonal area distinct, the 

 frontal crest broken, the median fovea large, elongate ; basal 

 two-thirds of the wings infuscated. Length 10 mm. Larva 

 feeds on Populus monilifera. New Haven (W. E. B.) 



°T. gregarius Dyar. 



Abdomen black ; body black, with the front and middle legs 

 beyond the middle of their femora and the hind legs beyond the 



