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



9. Marginal vein not, or only^a little, longer than stigmal vein 10 



Marginal vein at least twice as long as stigmal 



Zelotypa p. 572 



10. Mandibles normal, small 11 



Mandibles large, falcate, crossing at tips Xenotoma p. 572 



11. Last ventral segment straight and punctate Anectata p. 573 



Last ventral segment somewhat bent, impunctate 



Pantoclis p. 572 



12. Stigmal vein perpendicular Zygota p. 572 



Stigmal vein very oblique Aclista p. 573 



Leptorhaptus Foerster. 



Key to Species. 



Abdomen principally black conicus 



Abdomen principally rufous rufu3 



L. conicus Ashmead. 



Shining black. Antennae, mandibles, palpi, tegulae, and legs 

 brownish yellow. Female antennae as long as the body. Length 

 3-4 mm. 



Branford, 28 July, 1905 (H.L.V.). 



L. rufus Ashmead. 



Male entirely rufous, with the appendages lighter. Female 

 with the head, thorax, and petiole black ; antennae extending only 

 to the base of the abdomen. Length 4-4.5 mm. 



Cinetus Jurine. 



C. coloradensis Ashmead. 



Polished black, pubescent. Scape very long, nearly twice as 

 long as the first flagellar joint. Metathorax smooth, tricarinated, 

 marginal cell as long as the marginal vein. Length 3 mm. 

 (female). 



C. americana Ashmead. 



Black, polished, pubescent. Antennae and legs pale brownish 

 yellow. Metathorax carinated, pubescent. Marginal cell shorter 

 than the marginal vein. Length 3 mm. (male). 



Acropiesta Foerster. 



A. flavicauda Ashmead. 



Black, shining, with terminal segment of abdomen yellow ; 

 antennae and legs rufous ; wings of female feebly developed. 

 Length 3 mm. 



