CATALOGUE OF NORTH AMERICAN DIPTERA. 365 



CHAGXON, fit. Prelim, les Syrph., 32. St. Jean, Quebec. 

 N. A., in nearly all local lists. 

 arcucinctus WALKER, see arcitatus. 



bisinuatus WILLISTON, Biologia, Dipt., in, 17. Guerrero, Mex., and Costa Rica. 

 GiGLio-Tos, Ditt. del Mess., n, 28. Oaxaca, Orizaba and Tehuacan, Mex. 

 boscii MACQUART, see Mcsogrannna. 

 bryantii JOHNSON, see contitina.r. 

 coalescens WALKER, see Mcsogramma. 



colludens WALKER, Trans. Ent. Soc., n. sen, v, 292. Mex. 

 concavus SAY, Jour. Acad. Sci. Phil, in, 89 (Scccva~) ; Compl. Works, n, 78.- 

 Pa. 



Perhaps same as tori'iis O. S., Cat., 123. 



contumax OSTEN SACKEN, Proc. Bost. Soc. Nat. Hist., xvni, 148. White Mts., 

 N. H. 



WALKER. List, in, 584 (adolcsccns). Martin Falls and Nova Scotia. 



WILLISTON, Synop. N. A. Syrph.. 71. White Mts., N. H. 



COQUILLETT, Proc. Wash. Acad. Sci., 11, 431, oc. in Alaska. 



JOHNSON, Ent. News, ix, 17 ( />rya/; //;') Mt. St. Elias', Alaska. [John- 

 son. ;';; lift.] 



Xotc. Walker's types, as quoted by Osten Sacken, Cat., 245, note, be- 

 long to three species; hence his name is not entitled to priority. 

 corbis WALKER, see Mcsograiimui. 

 creper Sxo\v, Kans. Univ. Quart., in, 234. Col. and N. M. 



SNOW, ibid., I, 37 (pait.rillus WILL.). 



N. M. Coquillett. 



decipiens WILLISTON, Biologia, Dipt., in, 18. Guerrero, Mex 

 delineatus MACQUART, Dipt. Exot, Suppl. i, 139, pi. xi, f. 13. Mex. 

 dimensus WALKER, see Allograpta obliijiui. 

 dimidiatus MACQUART, Hist. Nat. Dipt., i. 537. Ga. 



WILLISTON, Synop. N. A. Syrph., J.^L. cannot be identified. 

 disgregus SNOW, Kans. Univ. Quart., in, 233 M., 7,500-8.500 ft. 

 disjectus WILLISTON, Proc. Amer. Phil. Soc., *x, 314 (disjitnctus MACQ.) ; 

 Synop. N. A. Syrph., 72. Wash. 



SNOW, Kans. Univ. Quart., i, 36, note on female. Col. 



White Mts., N. H. Slosson. 

 diversipes MACQUART, Dipt. Exot., Suppl. iv, 155.- Newfoundland. 



OSTEN SACKEN, Proc. Bost. Soc. Nat. Hist, xvni, 149. L. Superior. 



WILLISTON, Synop. N. A. Syrph., 76. White Mts.. ] . H.; ] Y., Wash. 



COQUILLETT, Proc. Wash. Acad. Sci., 11, 431, oc. in Alaska. 



VERRALL, Brit. Flies, vm, 676. 



CHAGNON, fit. Prelim, les Syrph., 34. Rigaud, Quebec, 

 diversus WILLISTON, Biologia, Dipt., in, 16, pi. i, f. 6. Guerrero, Alex 

 dryadis HOLMGREN, see tarsatus. 

 eupeltatus BIGOT, Annales, 1884, 91. Mex. 



WILLISTON, Biologia, Dipt., in, 16, notes. Guerrero, Mex 



GIGLIO-TOS, Ditt. del Mess., n, 29. Angang, Mex 

 fumipennis THOMSON, Eugen. Resa, 499. Cal. 



WILLISTON, Synop. N. A. Syrph., 293, notes; quotes d 

 geniculatus MACQUART, Dipt. Exot., 11. 2, 101, pi. ;vii, f. 5.- Newfoundland. 



OSTEN SACKEN, Proc. Bost. Soc. Nat. Hist., xvni, 159; Cat., 245, note on 

 type. White Mts., N. H. 



WILLISTON, Synop. N. A. Syrph., 84, pi. iv, f. 3. White Mts., 1 



Alaska Coquillett and Johnson. 



