THE CANADIAN ENTOMOLOGIST 349 



sides of face shining; inner orbits concave but not abruptly emar- 

 ginate; scape long, black; flagellum dark above and ferruginous 

 beneath; mesothorax dull and granular, with fine, very short, pale 

 pruinose pubescence; tubercles yellow; tegulae light fulvous; 

 wings hyaline, nervures fuscous, outer nervures not weakened; 

 first recurrent nervure joining extreme apex of second submarginal 

 cell; area of metathorax large, microscopically reticulate, not 

 plicate; legs pale yellowish or fulvous, the middle and hind tibiae 

 and tarsi fuscous, the middle tibiae pale in front; hind spur with 

 three very long spines; abdomen broad, smooth and shining, 

 reddish fuscous and fulvous marked with lemon yellow; first seg- 

 ment broadly yellow basally and at sides except apically, where 

 it is dark brown, but otherwise the segment is pale fulvous; second 

 and third segments with a broad, yellow basal band, widest sub- 

 laterally, the segments otherwise fulvous in middle and dark 

 brown laterally; fourth and fifth segments reddish-fuscous, with 

 basal yellow bands; venter pale yellow, with the last three seg- 

 ments fuscous. 



Porto Bello, Panama, March 13, 1911. (Aug. Busck), U. S. 

 Nat. Museum. Nearest to the Brazilian H. callichroma (Ckll.), but 

 with entire yellow bands on abdomen. The structure of the meta- 

 thoracic enclosure is quite the same, with fine reticulations, the 

 lines mostly transverse. Of the other species of the group, I 

 possess H. ephelix Vach., from Marcapata, Peru; H. phacodes 

 Vach., from Mapiri, Bolivia; and a cotype of H. maculiventris 

 (Crawford), described under Augochlora. Crawford's species 

 seems doubtfully distinct from H. trinax Vach., but I have no 

 authentic material of the latter. Crawford and I, describing 

 species of this group, have referred them to Augochlora. Vachal 

 referred all the species to Halictus, but he included Augochlora in 

 Halictus. Schrottky in 1910 placed the species in his genus 

 Nescorynura. They are certainly not genuine Augochlora, nor do 

 they agree well with typical Nescorynura or Halictus. They may 

 be considered a distinct subgenus of Halictus, or even a separate 

 genus. I do not propose a name, because it is possible that Cteno- 

 carynura Schrottky (Deutsch. Ent. Zeit., 1914) is applicable. I 

 have not been able to procure Schrottky 's description, and there 

 is no reference to the genus in the Zoological Record. 



