No. 22.~\ HYMENOPTERA OF CONNECTICUT. IOI 



*M. trisyllaba (Norton). Howard, Insect Book, PI. xiii, Fig. 

 8. Larva feeds on elder. Connecticut (E. N.) ; New Haven, 

 27 June, 1902 (E. J. S. M.). 



M. goniphora (Say). Connecticut (E. N.) ; Hamden, 1 

 June, 191 1 (A. B. C). 



*M. intermedia (Norton). Connecticut (E. N.). 

 M. formosa (Klug). Howard, Insect Book, PI. xiv, Fig. 25. 

 Connecticut (E. N.) ; New Haven, 8 June, 1904 (W. E. B.), 4 

 July, 1905 (H. L. V.), 20 July, 1904 (B. H. W.), 24 June, 1902 

 (E. J. S. M.). 



M. cesta (Say). 



M. succincta Cresson. Stonington, 8, 14, June, 1906 (W. 

 E. B.) ; New Haven, 25 June, 1907 (B. H. W.), 6 June, 1908 

 (W. E. B.), 26 May, 1911 (A. B. C). 



M. melanopleura MacGillivray. 



*M. fascialis Norton. Farmington (E. N.) ; New Haven, 4 

 July, 1905 (H. L. V.). 



*M. varia (Norton). Farmington (E. N.). 



Allantus Jurine. 



Key to Species. 



1. Female: posterior femora pale at base and black at apex, or 

 black above and pale below; body black, with clypeus, labrum, 

 mandibles, line on lower balf of postgenae adjacent to 

 eyes, two basal segments of antennae, collar, teguke, raeso- 

 pleurae broadly, scutellum, a spot above posterior coxae, 

 legs beyond coxae (except middle femora at apex above, 

 apical half of posterior femora, and a ring on apex of 

 posterior tibiae), basal plates, abdominal segments four, seven, 

 and eight, and a spot on each side of fifth and sixth, yellow. 

 Male differs in having only basal segment of antennae, genae, 

 lower half of postgenae, mesopleurae entirely, sides of prono- 

 tum, metapleurae, legs entirely except a black line above on 

 middle and hind legs and hind tarsi, and abdomen beyond basal 



plates, white or yellow. Length 12 mm basilaris 



Female: posterior femora wholly black or rufous; body black, 

 with clypeus, labrum, mandibles, genae, lower half of postgenae, 

 spot on mesopleurae, sometimes wanting, scutellum, tro- 

 chanters, tibiae, becoming rufous at apex, tarsi, basal plates, 

 and abdominal segments five to seven with a short band 



