270 SUPPLEMENT. 



4. First abdominal segment black- tomentose ; first posterior cell usually 



closed at some distance before the margin 5. 



First posterior cell closed in the margin ; abdomen white, with narrow [pennis, Macq.) . 



black borders sp. ? (under limbi- 



5. Abdominal segments, except the second and last, black-tomentose, with 



a narrow fringe of pale rufous ; cross- veins of the wings clouded . . sackeni, sp. n. 

 Abdominal segments, except the fifth, usually, with a white band ; cross- 

 veins not distinctly clouded limbipennis, Macq. 



6. Face rounded in profile, not conical ; proboscis protruding from the oral 



margin as far as or farther than the length of the head 7. 



Face distinctly conical ; proboscis protruding not more than the length 



of the labella beyond the oral margin 9. 



7. Antennal style shorter than or about as long as the third joint ... 8. 

 Antennal style twice as long as the third joint socia, O. Sack. 



8. The portion of the proboscis protruding beyond the oral margin shorter 



than that of the head ; style distinctly shorter than the third antennal 



joint. filia, O. Sack. 



The portion of the proboscis protruding beyond the oral margin longer 



than that of the head rostrifera, Jaenn. 



9. Wings with conspicuous brown clouds on the cross-veins pavida, sp. n. 



Wings without brown clouds on the cross-veins 10. 



10. Third antennal joint very much elongated, more than three times 

 the length of the style; brown of the wings less sharply limited 



posteriorly brevistylata, sp. n. 



Third joint not extraordinarily elongated, the style equal to about half 



its length brevirostris, sp. n. 



Exoprosopa pueblensis (p. 82). 



To the localities given, add : — Mexico, Acaguizotla and Amula in Guerrero 

 (H. H. Smith), San Bias and Santiago Iscuintla in Jalisco, Jaral in Guanajuato 



(Schumann). 



Nine specimens. 



Exoprosopa iota (p. 82). 



Exoprosopa iota, Coquillett, Canad. Ent. xxiv. p. 174 \ 



To the locality given, add : — United States, California 1 . — Mexico, Acaguizotla in 

 Guerrero (//. H. Smith). 



Four specimens. Coquillett 1 thinks that this species is almost certainly identical 

 with JE. doris, O. S. An examination of a number of examples of both forms 

 convinces me that such a union is premature. E. doris, it is true, does sometimes 



