No. 22.] HYMENOPTERA OF CONNECTICUT. 733 



M. (M.) bimaculata LePeletier. Howard, Insect Book, PI. 

 iii, Fig. 16. 



New Haven, 13 July, 1900; Westville, 22 July, 1906 (W. 

 E. B.). 



M. (M.) obliqua Say. Howard, Insect Book, PI. iv, 

 Fig. 22. 



M. (M.) agilis var. aurigeniae Cresson. 



Tetralonia Spinola. 

 Synhalonia Patton. 



T. atriventris Smith. Howard, Insect Book, PI. ii, Fig. 19. 



Female: with hair on the inner side of the basal joint of the 

 hind tarsi black or fuscous ; hair of thorax above nearly entirely 

 fulvous. Male : clypeus and labrum light ; thorax above without 

 dark hair; flagel entirely dark, mandibles without a light spot; 

 abdomen not covered with fulvous hair, the apical part black with 

 dark hair; upper lateral borders of clypeus black, the yellow not 

 notched; hind spurs not in the form of a hook. 



New Haven, 4-10 May, 1904 (H. L. V., W. E. B.) ; Westville, 

 20 May, 1905 (W. E. B.) ; Branford, 11 May, 1905 (H. W. W.). 



Cemolobus Robertson. 



C. ipomoeae Robertson. 



Length 13-17 mm. Clypeus trilobate, with a transverse apical 

 whitish band in the male ; mandibles with a distinct angle on the 

 outer margin, this angle being spined in the male ; hind metatar- 

 si in the male arcuate ; female with the second joint of the maxil- 

 lary palpi nearly as long as the third, fourth, and fifth combined ; 

 scopa nearly black. 



Visits flowers of the morning-glory (Ipomcea) ; hence its 

 specific name. 



Xenoglossa Smith. 



X. (Peponapis) pruinosa Say. PI. x, Fig. 6; Howard, 

 Insect Book, PI. iii, Fig. 1, PI. vii, Fig. 2 (the latter errone- 

 ously labeled X. spriuna). 



Length 10-14 mm. Female with its mandibles bidentate at 

 apex ; second and third joints of maxillary palpi subequal ; second 

 to fourth dorsal abdominal segments with whitish pubescent fas- 



