No. 22.] HYMENOPTERA OF CONNECTICUT. 745 



margin of this segment with four teeth; seventh abdominal 



segment pointed; front tarsi strongly ciliate 8 



Pubescence pale yellowish or griseous'j rarely mixed with 

 black; sixth dorsal abdominal segment with a jagged 

 carina, its middle usually notched, its apical margin with 

 a lateral tooth and an inner dentiform carina nearer to the 



lateral tooth than to its fellow of the opposite side brevis 



8. Pubescence white; median tooth of sixth abdominal segment 

 nearer to the lateral one than to its fellow of the opposite 



side gcnerosa 



Pubescence more ochraceous; median tooth of sixth abdom- 

 inal segment nearer to its fellow than to the lateral one 



mendica 



°M. (Sayapis) pugnata Say. 



°M. (S.) sayi Cresson. M. inimica Cresson. Howard, 



Insect Book, Pi. iii, Fig. 4. 



°M. (Xanthosarus) melanophea Smith. 



M. (X.) latimana Say. PL x, Fig. i ; Howard, Insect 

 Book, PI. i, Fig. 23. 



Occurs along the coast. New Haven, 20 June, 1902 (E. J. S. 

 M.) ; Sachem's Head, Guilford, i August, 1904 (H. L. V.) ; 

 Branford, 29 July, 1905 (H. W. W.). 



*M. (X.) exclamans Viereck. 

 Type-locality: West Thompson, 12 July, 1905 (H. L. V.) ; 

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



or sunflower. 



M. (Delomegachile, new subgenus) vidua Smith. M, 



frigida Smith. 



Branford, 15 July 1904 (H. W. W.). 



M. (Anthemois) infragilis Cresson. Howard, Insect Book, 

 PL iii, Fig. 12. 



Along the coast. Taken on milkweed and burdock {Arctium 

 lappa) flowers. Branford, 3, 11, 22 August, 1904 (H. W. W.) ; 

 Sachem's Head, Guilford, i August, 1904 (H. L. V.). 



M. (Megachile) mendica Cresson. Howard, Insect Book, 

 PL iv. Fig. 25. 



North Haven, 3 August, 1905 ; Westbrook, 30 August, 1904 

 (H.L.V.). 



