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



(In addition to the female characters) clypeus and two lateral 

 face marks luteous parvus 



P. parvus Robertson. 



New Haven, 4 July, 1905 (H. L. V.), on flowers of New 

 Jersey tea; Mt. Carmel, 23 June, 1902 (E. J. S. M.). 



P. asteris Robertson. 



Stafford, 24 August, 1905 (W. E. B.), on goldenrod. 



Calliopsis Smith. 

 A single species is known to inhabit this State. It may be 

 recognized by the fasciate abdomen, maculation luteous in the 

 female and yellow in the male ; the face and legs in the male being 

 almost entirely yellow. 



C. andreniformis Smith. 



New Haven, 24 June, 1902, 6 July, 1904, 4 July, 1905 (E, J. 

 S. M., P. L. B., H. L. V.). On the last date it was taken on 

 flowers of New Jersey tea; also 19 July, 1905 (B. H. W.), and 

 20 July, 1904 (W. E. B.) ; Branford, 3 August, 1904 (H. W. W.). 

 In Maine it has been taken on flowers of Solidago juncea. 



nomadim:. 



This group, known as cuckoo bees, comprises species mostly 

 under 10 mm. in length, reddish or black, or both, usually macu- 

 lated with yellow or luteous, and living parasitically in the nests 

 of other bees. 



Key to Genera. 



1. Marginal cell separated from costa 2 



Marginal cell at apex not separated from costa; maxillary- 

 palpi six-jointed Nomada p. 722 



2. Maxillary palpi with less than six joints 3 



Maxillary palpi with six joints Neopasites p. 730 



3. Maxillary palpi with less than five joints 4 



Maxillary palpi with five joints Viereckella p. 727 



4. Maxillary palpi with two joints Epeolus p. 728 



Maxillary palpi with three joints Triepeolus p. 728 



Nomada Fabricius. 

 Key to Species. 



I. Mandibles with a tooth near apex 2 



Mandibles without a tooth near apex 8 



