No. 22.] HYMENOPTERA OF CONNECTICUT. 623 



Windsor, 27 June, 1905, Westville, 17 September, 1905 

 (W. E. B.) ; Colebrook, 21 July, 1905, New Haven, i August, 

 1905 (H. L. v.) ; Lyme, 29 May, 1910 (A. B. C). Probably 

 occurs throughout the State. 



Nomiaephagus Ash mead. ^ 



N. simillimus Smith. 



Female : pygidium longitudinally striate ; head wider than the 

 thorax; thorax longer than broad; ferruginous; the second 

 segment with two yellowish spots. Male : head and thorax black 

 with black pubescence; second abdominal segment yellowish 

 with reddish pubescence; femora sparsely pubescent. The male 

 was described under the name sanbornii by Blake. 



New Haven, 4 June, 1904, 20 May, 1905, 22 August, 1910, 

 Wallingford, 20 May, 1900 (W. E. B.) ; New Haven, 19 

 September, 1909, Lyme, i May, 1910, Manchester, 20 May, 

 1910 (A. B. C) ; New Haven, 16 August, 1904 (P. L. B.), 17 

 June, 1905 (B. H. W.). 



Das3rmutilla Ash mead. 

 Key to Species. 



1. Females 2 



Males 8 



2. Insects clothed with long dense pubescence occidentalis 



Insects sparsely pubescent, or almost nude 3 



3. Posterior lateral margins of head not carinate or tuberculate 4 

 Posterior lateral margins of head carinate or tuberculate.. 7 



4. Carina of first ventral abdominal segment produced anteriorly 



into a sharp tooth ferrugata 



Carina of first ventral abdominal segment obsolete, straight 

 or slightly tridentate; legs black S 



5. No well defined spot of black pubescence at base of 



second dorsal abdominal segment; carina of first ventral 



segment tridentate champlaini 



A well defined spot of black pubescence at base of second 

 dorsal abdominal segment 6 



6. Carina of first ventral segment obsolete; second dorsal ab- 



dominal segment very sparsely punctate at sides vierecki 



Carina of first ventral segment bidentate, anterior tooth much 

 larger and rounded; sides of second dorsal abdominal 

 segment rather coarsely punctate vesta 



7. Scrobes bounded by a carina above scrobinata 



Scrobes not bounded by a carina above cypris 



