SOUTH AMERICAN DIPTERA. 151 



dimidiata Westw. Tr. Ent. Soc. Lond. 1876, 513, pi. vi, f. 1.— Colombia, 

 virmondii Erich. Eiitomsi'- i, 163, 3. Walk. List vi, 347.— Brazil. 



PTEROPEXUS. 

 Macq. Dipt. Exot. Suppl. 1, 1846. 

 dicolor Macq. Dipt. Exot. Suppl. i, 226, pi. ix, f. 2. Wulp, Tijrlsdir. Ent. xxvi. 

 88, pi. X, f. 1. — New Granada. 



THYLLIS. 



Erichson, Entouigr. 1840. 



gracilis Phil. chil. Dipt. 643 (Megalyhus). West. Tr. Ent. Soc. Lond. 1876, 511, 



pi. V, f. 4. Schiner, Dipt. Novara 144. — Chile, 

 obesus Phil. chil. Dipt. 642 {Megalyhm).—CA\\\Q. 

 Philippi Schiner, Dipt. Novara 144. 



Megalybns crassus Phil. chil. Dipt. 642 (Schiner;. 

 —Chile, 

 pictus Phil. chil. Dipt. 642 {MegaJybus). West. Tr. Ent. Soc. Lond. 1876, 511, pi. 



V, f. 4.— Chile, 

 subcylindricus Phil. chil. Dipt. 644 {Megalyhus). West. Trans. Ent. Soc. Lond. 



1876, 512 (Megalyhus).— (MV\\q. 

 tristis Phil. chil. Dipt. 643 (Megalyhus). West. Trans. Ent. Soc. Lond. 1876, 511, 

 pi. V, f. 5. — Valdivia. 



PIALEA. 

 Erichson, Entomfjr. 1840. 

 lomata Erich. Entomgr. i, 161, pi. i, f. 9. Walk. List vi, 344. 



Pialea lutescens West. Tr. Am. Ent. Soc. Lond. 1876, 513, pi. iv, f. 2. 

 — Brazil. 



TERPHIS. 

 ■ Erichson, Entomgr. 1840. 

 nodosa Erich. Entomgr. i, 169, pi. i, f. 10. Walk. List vi, 352.— Brazil. 



OCH^A. 

 Erichson, Entomgr. 1840. 

 calida Wied. (Acrocera) Macq. Dipt. Exot. i, 2, 289, pi. 14, f. 5 (Eriosoma). — Brazil, 

 lugubris Gerst. Stett. Ent. Zeit. 1856, 361.--Bahia. 

 long-icornis Erich. Entomgr. i, 156, 2, pi. i, f. 8. Walk. List vi, 343. — Brazil. 



HOLOPS. 



Philippi, Chil. Dipt. 1865. 

 cyaneus Phil. chil. Dipt. 645. Schiner, Dipt. Novara 142. —Chile. 

 Frauenfeldii Schiner, Dipt. Novara 143. — Chile, 

 inanis Phil. chil. Dipt. 645. 645.— Chile. 



SPH^ROPS. 

 Philiippi, Chil. Dipt. 1865. 

 appendiculatus Phil. chil. Dipt. 646, pi. xxv, 27.— Chile. 



PANOPS. 



Lamarck, 1804. 

 carbonarixis Phil. chil. Dipt. 648. Wulp, Tijdschr. Ent. xxv, 83.— Chile, Ar- 

 gentina. 



TRANS. AM. ENT. SOC, XXVII. JANUARY, 1901. 



