(6.) 



1. 



(3.) 



2. 



(2.) 



3. 



(o.) 



4. 



(4.) 



5. 



(1.) 



6. 



(8.) 



7. 



(7.) 



8. 



(10.) 



9. 



MYMENOPTEROUS family STEPHANID^. 763 



c?. 



Posterior margin of head produced collar-like. 



Petiole shorter than rest of abdomen ; collar short. 7. tener Schlett. 



Petiole longer than rest of abdomen. 



Petiole near!}' twice as long as rest of abdomen ... 1. coUarifer Schlett. 



Petiole a little longer than rest of abdomen ; neck long and 



slender 4. peruanus Enderl. 



Posterior margin of head simple, not bordered. 

 Semiannular coar.eelj', obliquely rugose; 4th tergite finely 



longitudinallj' parallel striate; wings slightly infumate. 



17. cylindricus Westw. 

 Semiannular quite or nearh- smooth. 

 Wings clear hyaline ; 4th tergite divergently longitudinallj^ 



striate 16. uactos^ts Schlett. . 



(9.) 10. Wings centrall}- darker 14. maculipennis 



[Westw. 



1. COLLAEIFER Schlett. 



Stephanies coUarifer Schlett., p. 141, $ c? • 



$. Frons arcuate to oblique rugose; all five frontal tubercles 

 prominent ; occiput coarsely longitudinally to obliquely rugose ; 

 posterior margin of head reflexed and produced into a long, 

 translucent collar. Basal flagellar joints normal. Neck with a 

 strong transvei'se fold, behind which it is slightly transrugose ; 

 semiannular transrugose, laterally finely punctato-rugose. Meso- 

 notum centrally smooth, with indistinct longitudinal row of 

 punctures and two divergent, superficially punctate impressions, 

 remainder transrugose and difFasely punctate. Scutellum smooth, 

 witii a few isolated but deep marginal punctures. Mesopleui'je 

 finely alutaceous and shining above, sparsely punctate beneath ; 

 metapleurse coarsely reticulate rugose, not separated from the 

 median segment by any sulcus. Median segment with diff"use, 

 shallow punctures, between which it is finely alutaceous; marginal 

 sulci distinct and sometimes an indistinct central impression. 

 Petiole transrugose, neai'ly twice as long as the smooth and 

 shining remainder of abdomen, and almost longer than the hind 

 coxae, trochanters, and femora together. Terebra longer than 

 body, its sheaths white-banded before apex. Hind legs with 

 coxiB trans-striate between coarse, scale-like rugosities ; femora 

 polished smooth, bidentate ; tibiae compressed to beyond middle ; 

 tarsi three-jointed. 



Black ; head entirely, mandibles and antennas basally ferru- 

 ginous. Wings subhyaline ; " neuration complete, excepting 

 that part on the median nervnre outside the submedian cell." 



cJ . Similar to the $ , but head and thorax more finely sculp- 

 tured, median segment closely cribrate punctate ; hind tarsi five- 

 jointed. 



Length , 5 ? 18 mm. ; terebra 24 mm. ; c? , 12 mm. 



Habitat : Brazil (Tefe on the Amazon and San Paulo Prov.) ; 

 Surinam. Type in the Royal ISTat. Hist. Museum, Berlin ; 

 co-type in coll. Wiistnei, in Sonderburg. 



