ANTHRAX. 115 



19 (16) . One third or more of the distal end of the anal and axillary- 



cells hyaline 26. sp. ? 



20 (13). The anterior and posterior cross-veins on dark ground, and 



without any pale aureole around them. 



21 (24). Anal and axillary cells altogether filled with brown (the 



extreme distal end sometimes hyaline) . 



22 (23) . Thorax black, with a stripe of white hair on each side . . 22. eumenes, sp. n. 



23 (22). Thorax black, with more or less fulvous pile 8-10. spp. ? 



24 (21). A considerable portion of the anal and axillary cells hyaline. 



25 (28). A brown spot on the bifurcation of the third vein. 



26 (27). The cross -vein at the base of the second posterior cell bearing 



a brown spot as large as the spot on the bifurcation of 

 the third vein ; tibiae without spinules ; tarsi with in- 

 distinct joints 12. sp. ? 



27 (26). The cross-vein at the base of the second posterior cell bearing 



a brown cloud, much weaker than the spot on the bifur- 

 cation of the third vein ; tibiae with spinules ; tarsi with 

 distinctly marked joints 14. ephebus, sp. n. 



28 (25). No brown spot on the bifurcation of the third vein. 



29 (30). Face not conically projecting ; abdomen black, with two 



distinct white cross-bands 20. lepidota, sp. n. 



30 (29). Face conically projecting. 



31 (34). Prevailing colour of the abdominal pubescence yellowish. 



32 (33). Abdominal segments 6 and 7 without white tomentum . .17. palliata, Loew. ^. 



33 (32). Abdominal segments 6 and 7 with a white tomentum . . 16. consul, sp. n. 



34 (31). Prevailing colour of the abdominal pubescence whitish . . 15. cuniculus, sp. n. 



35 (12). The brown of the wings encroaching upon the second sub- 



marginal cell 13. galathea, sp. n. 



36 (1). Wings altogether hyaline. (A separate analytical table is 



given below, sub nos. 26-32.) * ** 



l. Anthrax cyanoptera. 



Anthrax cyanoptera, Wiedem. Aussereur. zweifl. Ins. ii. p. 638 \ 

 Hdb. Mexico 1 (Truqui, coll. Bellardi). 



" Nigro-chalybescens, collari rufo ; alis chalybeis. — Long. 11-12 millim. Antennae 

 black ; third joint in a gradually tapering point. A collar of bright rufous hairs. 

 Thorax and abdomen bright blackish-blue ; near the scutellum several whitish hairs, on 

 the sides of the abdomen only black ones. Wings very broad, six lines long, of a 

 handsome metallic blue ; the venation of the second cell of the inner margin some- 

 what different from the usual form. — Berlin Museum ; which also contains a variety, 

 smaller in size, and with a greenish abdomen. This species must not be confounded 



with A. ioptera from Brazil." 



q2 



