308 CATALOGUE OF NORTH AMERICAN DIPTERA. 



olympiae Aldrich, Trans. Amer. Ent. Soc, xxiii, 83 (Macellocerus). — Olympia, 



Wash. Boise, Ida.— J. M. A. 

 protervus Melander, Canad. Ent., xxxii, 143, f. 6, 7. — Clementon and Del. 



Water Gap, N. J. 

 sanus OsTEN Sacken, West. Dipt., 316. — Webber L., Cal. 



Craig's Mt., Ida.— J. M. A. 

 volitans Melander, Canad. Ent., xxxii, 143, f. 8. — Lusk, Wyo. 

 vorax LoEW, Neue Beitr., viii, 41; Mon. N. A. Dipt, 11, 112. — D. C. 

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



POLYMEDON. 



OsTEN Sacken, West Dipt., 317, 1877. 

 WiLLiSTON, Synops. Earn, 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., 11, 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. I.; 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 (Pelastoneiirus) ; 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., viii, 36, 1861 ; Mon. N. A. Dipt., 11, 103, 1864. 



Aldrich, Kans. Univ. Quart., 11, 152, 1893 {Metapelastoneurus, in part) ; 

 Ent. News, xi, 532, syn. 



Wheeler, Proc. Cal. Acad. Sci., 11, 11, 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, 11, 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. i3.^Vera Cruz, Mex. 

 cognatus Loew, Mon. N. A. Dipt., 11, 109. — Middle States. Texas — O. S. Cat 



Wheeler, Proc. Cal. Acad. Sci., 11, 12, oc. at Chicago. 



Aldrich, Biologia, Dipt, i, 339, male. — -Vera Cruz, Mex. 



St. Augustine, Fla. — Johnson. 



