HYMENOPTKROUS FAMILY SXEPHANID^. 713 



Table of Genera. 



(2.) 1. Hind wing: with basal cell; abdomen sessile 1. Schlettererius. 



(1.) 2. Hind wing without basal cell ; abdomen petiolate. 



(8.) 3. Cubital and discoidal cells present; stigma tliick, chrtinized ; 



the bounding nervures indistinct (SxEPHANiNiE.) 



(5.) 4. Neuration complete 2. Stephanus. 



(4.) 5. Median vein in-joniplete, outer submedian cell open behind. 

 (7.) 6. Discoidal cell about j of the size of the cubital cell, does not 

 touch the submedian cell, but is petiolate ; stigma broad. 



3. Farastejjhanellus . 

 (6.) 7. Discoidal cell nearly as large as the cubital, and touches the 

 submedian on a longer or shorter base ; stigma narrow, 



long, and pointed 4. Uemistephanus. 



(3.) 8. Cubital and discoidal cells wanting; stigma hyaline, bounding 



nervures distinct (Fcenatopodin^.) 



(12.) 9. External submedian cell present partly. 



(11.) 10. „ „ „ open behind only 5. Neostephanus. 



(10.) 11. ,, „ „ open apically and behind. 6. Foenatoptcs. 

 (9.) 12. „ „ ,, entirely wanting 7. Diastephaniis. 



Schlettererius Ashm. 



Schlettererius K^hvaQsid, p. 150 ; Stephaaus Say, p. 61 ; C'resson 

 (2), 1880, p. xviii. 



This genus appears to ngree with Stephanus Jur. in the 

 neuration of the fore wings, the formation of the mandibles and 

 the insertion of the antennas, but difi'ers in having one complete 

 cell in hind wing, abdomen sessile, the basal segment being not, 

 or but little, longer than the second. 



Only one species, S. cinctipes Cress., has hitherto been 

 recognized, but the description of S. rufipes Say, though 

 defective, suffices to place it here. I give the original 

 descriptions. 



1. RUFIPES Say, I. c. 

 Stephanus Jur. 



'■'■ S. rufipes. Black; abdomen sessile ; thorax not remarkably 

 attenuate before. Inhabits Pennsylvania. 



" Body somewhat sericeous; palpi pale yellowish; scutellum 

 with a groove on each side, rough ; metathorax rough, and with 

 two slightly elevated longitudinal distant lines ; wings hyaline ; 

 a large triangular fuscous carpal spot ; feet rufous ; posterior pair 

 of tarsi dusky ; abdomen a little rough at base; oviduct as long 

 as abdomen. 



" Length one-fifth of an inch. 



" Although the arrangement of the wung nervures agrees 

 precisely with S. coronatus Jur., yet the form of the body differs 

 materially, the thorax not exhibiting the remarkable attenuation 

 before, and the abdominal petiole is not visible." 



