AMERICAN HYMENOPTKRA. 221 



Abilomen black, with only the second segment ferruginous, above and 

 beneath, and with ferruginous pubescence except at 

 apex 38. Asopus. 



Abdomen black, second segment yellow-ferruginous, with golden pub- 

 escence except at apex, remaining segments with mixed black 



and golden pubescence 39. Hector. 



Head and protliorax above, niesothorax and scutelluni entirely, with 

 dense yellowish-white pubescencej abdomen dull ferruginous, 

 clothed with black pubescence ; second segment yellowish ; two 

 apical segments with a patch of yellowish-wliite jnibes- 



cence 40. monticola. 



Metathorax black ,• head and prothorax above, scutellum and more or 

 less of metathorax, with fulvous-yellow or whitish pubescence. 



Abdomen above black, second segment with a broad transverse me- 

 dian dull yellowish band, and the fourth, fifth and sixth seg- 

 ments with a dense dull j'ellowish pubescence ; head and thorax 

 above with yellowish-fulvous pubescence; wings fuliginous, 

 with a broad median subhyaline band .')5. Iztapa. 



Abdomen above, except extreme base to apex, with a dense briglit 

 scarlet pubescence; head and thorax above with clay colored 

 pubescence 33. Samichrasti. 



Abdomen with silvery pubescence; second segment ferruginous, gen- 

 erally with narrow black apical margin; three following seg- 

 ments with silvery pubescence, and the two apical segments 

 black, with extreme apex silvery; head and thorax above with 

 silvery pubescence 4(5. apicalata. 



Abdomen black, basal half of second and the third and fourth seg- 

 ments entirely with dense pale golden or yellowish-white pub- 

 escence ; head, prothorax and scutellum with pale golden pub- 

 escence : wings dusky, with apical third fuliginous. ..52. azteca. 



Abdomen black, apex of first, base of second, and the third and fourth 

 segments with dense silvery-white pubescence; head, thorax, 

 scutellum, pleura and base of metathorax with silvery-white 

 pubescence; wings hyaline, the anterior pair bifasciate with 



fuscous - .51. Wilsoni. 



Head and thorax ferruginous, the former larger than usual, quadrate, 

 the vertex very broad behind eyes. 



Abdomen, beyond second segment, black, with black pubescence ; first 

 and second segments ferruginous 19. pennsylvanica. 



Abdomen ferruginous, with golden pubescence; apex of lirst, second, 



and the following segments blackish 20. auripilis- 



First abdominal segment not nodiform, bnt gradually dilated towards apex 

 and sessile with base of second segment. 

 Addomen black, a])ex of all the segments with a fringe of long, dense, 

 golden pubescence: vertex, pro- and niesothorax and scutellum 

 with golden pubescence; tegument of prothorax ferrugin- 

 ous 77. propinqua. 



Abdomen black, second segment, e.xcei)t apical margin, yellowish-ferrn- 

 ginous, smooth and polished , 7S. Oceola. 



TRANS. AMER. EXT. SOC. (29) FEIIUIARV, 1S71. 



