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



This species occurs throughout the State, and has been taken 

 in New Haven, North Haven, Sachem's Head, Scotland, and 

 Stafford, in May, June, July, August, and September. 



S. (S.) producticollis Packard. 



New Haven, 14 August, 1906 (P. L. B.). 



Subgenus Ectemnius Dahlbom. 

 No species of this group is known to occur in the State, but 

 any of the following may be found there. 



Key to Species. 



1. Females 2 



Males 4 



2. Space between eyes at clypeus shorter than length of first 



two joints of flagellum; transverse depressions of prono- 



tum broad and strong; scutellum finely striate corrugatus 



Space between eyes at clypeus at least equal in length to first 

 two joints of flagellum; transverse depressions of prono- 

 tum narrow and not strong 3 



3. Longitudinal furrow of propodeum broad and distinctly 



widened in middle; pronotum margined but not strongly so 



brunneipes 

 Longitudinal furrow of propodeum rather narrow and not 

 widened in middle; pronotum sharply margined montanus 



4. First joint of intermediate tarsi shorter than or subequal with 



three following united 5 



First joint of intermediate tarsi longer than three following 

 united 6 



5. Occiput and cheeks sharply margined behind; longitudinal 



furrow of propodeum rather narrow montanus 



Occiput and cheeks feebly margined; longitudinal furrow 

 of propodeum broad brunneipes 



6. Scape entirely yellow; abdomen broad, not longer than head 



and thorax united; posterior face of propodeum distinctly 



enclosed corrugatus 



Scape partly black; abdomen elongate, longer than head and 

 thorax united; posterior face of propodeum not completely 

 enclosed, as ridge separating it from dorsal surface is 

 obsolete pauper 



S. (E.) montanus Cresson. 



S. (E.) pauper Packard. 



S. (E.) brunneipes Packard. 



S. (E.) corrugatus Packard. 



