152 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Geron senilis, Fab. — Las Cruces, Aug. 25. 



Geron trochiliis, Coq. — Mesilla Park, Sept. 17, on Pedis papposa. 



ToxopJwra pellucida, Coq. - Mesilla Park, A.pril 26. 



THEREVIDiE.' 



Psilocephala platancala, Loew. — Rincon, July 5, on mesquite. Ros- 

 well, April 15. 



Psilocephala riifiventris, Loew. — Las Cruces. 



Psilocephala hamorrhoidalis, Macq. — Las Cruces. Santa Fe, July 

 3, on foliage of box-elder. 



SCENOPINID.E. 



Scenopinus occidentalis, Coq. — Mesilla, Sept. i. 



Empid.^:. 



Drapetis divergens, Loew. — Santa Fe, end of July. 

 Tachydromia postica. Walk. — Mesilla, on Sambucus tnexicanus. 

 M)fhicomyia rileyi, Coq. — Mesilla Park, April 12. Swept from 

 Sophia halictorum. 



Platypalpus ceqiialis, Loew. — Las Cruces. Santa F^, July 24. 

 Platypalpus trivialis, Loew. — Santa Fe, June 25, on almond. 



Dolichopodid.e. 



Dolichopus coloradensis, Aldr., + , det. Aldrich. — Santa Fe', July 3, 

 on foliage of box-elder. 



Dolichopus obcordatus, Aldr., det. Aldrich. — Santa Fe, Aug. 18, in 

 Archbishop Lamy's garden. 



Hercostomus, n. sp., det. Aldrich. — Santa Fe, July 3. 



Porphyrops nigricoxa, Loew., det. Coq. — Santa Fe, July 6. 



Diaphorus leiicostomus, Loew., det. Coq. — Mesilla Valley. 



Chrysotus sp., cf , V , det. Aldrich. — Las Cruces, June 10, swept 

 from alfalfa. 



Hydrophones, n. sp., det. Aldrich. — San Augustine Ranch, Organ 

 Mts., Aug. 28. 



Psilopus melampus, Loew., det. Aldrich. — Santa Fe', July 3, on fol- 

 iage of box-elder. 



