246 On the Hi/menoptera of the Genus 



Hab. Maine (H. Coll.). 



One specimen examined. 



Sp. 20. A. tacitus. Say. H. Cat. Undescribed. 

 Black; abdomen rufous; wings violaceous. {$ Long. 

 0.30 in. Ex. alar. 0.60 in. 9 Long. 0.34 in. Ex. alar. 

 0.68 in.) 



$ Head and thorax black, head coarsely punctured, 

 thorax smooth and shining ; antennae moderate, third 

 joint but little longer than fourth ; clypeus not deeply 

 emarginate ; labrum retracted, truncate ; face immaculate ; 

 two white dots behind scutellum ; abdomen bright red ; 

 basal membrane black ; legs black ; tips of anterior femo- 

 ra and base of tibaB piceous ; wings opaque, shining, viola- 

 ceous ; recurrent nervure received near the base of second 

 submarginal cellule. 



9 A faint rufous tinge on the inner orbits, near the an- 

 tennae ; labrum angulate, hairy ; basal joints of palpi 

 rufous above, remainder dark piceous; wing-scale piceous; 

 abdomen paler than male ; anterior tibiae and tarsi pi- 

 ceous. 



Hab. Farmington, Conn., and Massachusetts ( H. 

 Coll.). 



Three specimens examined. 



Sp. 21. A. tardus. Say. H. Cat. Undescribed. 

 Black; abdomen rufous, and wings violet. (Long. 0.45 

 in. to 0.50 in. Ex. alar. 1.00 in. to 1.10 in.) 



9 Head and body black ; antennae moderate, somewhat 

 flattened ; clypeus not deeply emarginate ; labrum pro- 

 duced and rounded, fringed with dark hair ; head and 

 thorax closely punctured, immaculate; abdomen rufous, 

 flattened ; basal membrane black ; apical segment black, 

 with a few black hairs ; legs black ; anterior pair of tibiae 

 and tarsi piceous ; a white line on upper edge of posterior 

 coxae ; wings violaceous, semitransparent. 



S Anterior legs beneath and tarsi above piceous ; the 

 white line on posterior coxae wanting. 



