308 CATALOGUE OF NORTH AMERICAN DIPTERA. 



olympiae ALDRICH, Trans. Amer. Ent. Soc., xxm, 83 (Maccllocerus). Olympic, 



Wash. Boise, Ida. J. M. A. 

 protervus MELANDER, Canad. Ent., xxxn, 143, f. 6, 7. Clementon and Del. 



Water Gap, N. J. 

 sanus OSTEN SACKEN, West. Dipt., 316. Webber L., Cal. 



Craig's Mr.., Ida. J. M. A. 



volitans MELANDER, Canad. Ent., xxxii, 143, f. 8. Lusk, Wyo. 

 vorax LOEW, Neue Beitr., vm, 41; Mon. N. A. Dipt., n, 112. D. C. 

 N. J. Smith Cat.; Mich., Col. J. M. A. 



POLYMEDON. 



OSTEN SACKEN, West. Dipt., 317, 1877. 



WILLISTON, Synops. Fam. and Gen., 47, 1886. 



ALDRICH, Trans. Ent. Soc. Lond., 1896, 318, amended; Biologia, Dipt., i, 



333, 1902, table of species. 



argentatus ALDRICH, Biologia, Dipt., i, 334, pi. vi, f. 7. Cuernavaca, Mex. 

 castus WHEELER, Proc. Cal. Acad. Sci., n, 6, pi. i, f. 8. Grand Canon, Ariz. 



ALDRICH, Biologia, Dipt., i, 333, footnote. 

 flabellifer OSTEN SACKEN, West. Dipt., 317. Sonoma Co., Cal. ; on stones in 



stream. 



Juliaetta, Idaho J. M. A. 

 nimius ALDRICH, Biologia, Dipt, i, 334, pi. vi, f. 8, 9. Guerrero, Mex., and 



Hagerman, Ida., about waterfalls. 

 superbus ALDRICH, Trans. Ent. Soc. Lond., 1896, 318-320, pi. xi, f. 103 and pi. 



xii, f. 113, 118, 119. St. Vincent, W. L; on stones in stream, 

 triangularis ALDRICH, Biologia, Dipt., i, 335. Cuernavaca, Mex. 



SARCIONUS. 



ALDRICH, Biologia, Dipt., i, 341, 1902; Kans. Univ. Sci. Bull., i, 47, 1902. 



flavicoxa ALDRICH, Biologia, Dipt., i, 341, pi. vi, f. 15. Teapa, Mex. (on the 

 plate as Pcecilobothrus}. 



lineatus ALDRICH, Trans. Ent. Soc., Lond., 1896, 312 (Pelastoncurns} ; Biologia, 

 Dipt., i, 341, gen. ref. and oc. in Teapa, Mex. ; Kans. Univ. Sci. Bull, 

 i, 82, oc. in Grenada, and notes. St. Vincent, W. I. 



PELASTONEURUS. 



LOEW, Neue Beitr., vm, 36, 1861 ; Mon. N. A. Dipt, n, 103, 1864. 



ALDRICH, Kans. Univ. Quart., n, 152, 1893 (Metapelastoneurus, in part) ; 

 Ent. News, xi, 532, syn. 



WHEELER, Proc. Cal. Acad. Sci., n, n, 1899, table of species. 



ALDRICH, Biologia, Dipt., i, 336, 1902, table of Mex. species; Kans. Univ. 



Sci. Bull., i, 47, 1902, table of species. 

 abbreviatus LOEW, Cent., v, 89; Mon. N. A. Dipt., n, 338. New Rochelle, N. Y. 



St. Augustine, Fla. Johnson. 

 alternans LOEW, see Paraclius. 

 argentifer ALDRICH, Trans. Ent. Soc. Lond., 1896, 313. St. Vincent, W. I. 



Mexico, several places, and Grenada, W. I. Aldrich. 



bifrons WALKER, Dipt. Saund., 212 (Dolichopus}. U. S. (Unrecognizable.) 

 bigeminatus ALDRICH, Biologia, Dipt., i, 338, pi. vi, f. 13. Vera Cruz, Mex. 

 cognatus LOEW, Mon. N. A. Dipt., n, 109. Middle States. Texas O. S. Cat 



WHEELER, Proc. Cal. Acad. Sci., n, 12, oc. at Chicago. 



ALDRICH, Biologia, Dipt., i, 339, male. Vera Cruz, Mex. 



St. Augustine, Fla. Johnson. 



