18 PEOCEEDINGS OP THE NATIONAL MUSEUM vol. 82 



Tarsi dark brown or fuscous, becoming a little paler apically on fore and 

 mid pairs; vertex nowhere microscopically striate. 



bermudensis, new species 

 9. Petiole of abdomen with dorsocentral carina quite sharp and linear on api- 

 cal half, flattened on basal half or less and with two irregular impressed 

 lines which divide it into three irregular carinae ; antennal flagellum red- 

 dish yellow below on almost its entire extent, and without any visible 



raised line or spot on segments 2 to 10 canadensis, new species 



Petiole of abdomen with usual central carina sulcate on almost its entire 

 length, the sulcus clean-cut; antennal flagellum usually black, and with 

 some of the segments with a well-developed raised line or spot on one 

 side 10 



10. Antennal flagellum with distinctly raised lines present only on seventh and 



eighth and rarely on sixth segments, underside not noticeably yellow. 



niger Packard 



Antennal flagellum with several of segments proximad of seventh, with a 



distinctly raised line on one side 11 



11. Head behind ocelli rather closely punctato-striate mixtus Fox 



Head behind ocelli without trace of striae 12 



12. Raised lines on third to sixth segments of flagellum very narrow, rather 



sharp, and most of them extending entire length of segment ; enclosure of 



propodeum with ridges high propinquus Kincaid 



Raised lines on third to sixth segments of flagellum as wide as those on 

 seventh and eighth, and not extending entire length of segments ; enclosure 

 of propodeum with ridges not much elevated leucopus Say 



13. Mesonotum finely but distinctly longitudinally striate on major portion of 



its surface ; head behind ocelli with very fine ti'ansverse striae ; petiole of 

 abdomen trisulcate on dorsum ; pygidium broader than in niger and its 

 allies, with microscopic shagreening, which causes it to appear less glossy 

 than in that group, and with rather large piliferous punctures on most 

 of its extent, though not so broad nor so densely punctured as in 



clypeatus; antennal flagellum not noticeably pale below 14 



Mesonotum not closely and finely longitudinally striate, usually with isolated 

 punctures, rarely more or less striate on posterior margin 15 



14. Fore and mid tarsi pale testaceous-yellow, only apical segment of latter 



browned ; mesopleura closely but not very coarsely tranversely striate in 



center (eps 1), anteriorly dull longicornis Fox 



Tarsi as in longicornis, hind pair with apical three segments brown ; meso- 

 pleura rather coarsely transversely striate above striatus (Viereck) 



All tarsi yellowish on bases and largely infuscated apically ; mesopleura 

 glossy on practically its entire extent, anteriorly with a few faint striae 

 but not dull on any part bermudensis, new si^ecies 



15. Antennal flagellum with entire lower side bright testaceous-yellow, pygidium 



broad, entirely dull because of presence of deep contiguous piliferous punc- 

 tures ; petiole of the abdomen with dorsocentral carina not sulcate except 



at base 16 



Antennal flagellum entirely dark or very slightly pale below ; pygidium nar- 

 row and glossy, the punctures rather large and less numerous ; petiole of 

 abdomen with dorsocentral carina densely sulcate to or almost to 

 apex 17 



16. Clypeus with central produced part transverse ; center of mesopleura (eps 1) 



dull because of closely placed transverse fine striato-punctate sculpturing. 



mellipes Say 



