104 THE REPORT OF THE No. 19 



Lanthus alhistylus, Selys. iNorth. River, Algonquin Park, Aug, 14, 

 (Walker). 



Somatochlora forcipata, Scudd. A very rare and interesting species of 

 northern range. One male, Algonquin Park, July 15, (Macoun) ; Isle of 

 Orleans, Que., Aug. 30, (Walker). 



Gomphus Scudderi, Selys. North. River, Algonquin Park, Aug. 20, 

 1903; Aug. 30, 1902, (Walker). 



Gomphus furcifer, Hagen. High Park and East Toronto, June 15, 

 (Walker). 



Dr onto gomphus spinosus, Selys. Lake Simcoe, July to Sept., (Walker). 



Macromia illinoiensis, Walsh. Lake Simcoe, July to August, Algon- 

 quin Park, Aug., (Walker). 



DoTocordulia libera, Selys. Lake Simcoe, July 8, (Walker). 



Ladona julia, Uhler. Algonquin Park, July 5, (Macoun). 



TraTnea Carolina, L. One male of this fine large southern dragon fly 

 was taken by Dr. E. M. Walker, in High Park, Toronto, May 24, 1904. 



DiPTERA. 



(Arranged according to a Catalogue of North American Diptera by J. M. 



Aldrich (Smithsonian Mis. Col. XLVI. No. 1,444.) The numbers refer 



to the pages of the Catalogue.) 



166. Bibio nigripiluSy Loew. Common in April, Vancouver, (Harvey); 

 Victoria, (Anderson). 



179. Sargus decorus, Say. Victoria, (Anderson). 



202. Tahanus captonis. Marten. Mt. Arrowsmith, B.C., July 28, 

 (Fletcher). 



203. Tahanus epistatus, 0. S. Sumner, N.W.T., June 23, 1903, (Wil- 

 ling); Deloraine, Man., Ottawa, June 23, 1903, (Fletcher). 



204. Tahanus illotus, 0. S. Moosomin, N.W.T., June 23; Tantallon, 

 N.W.T., July 23; Prince Albert, N.W.T., July 23, (Willing); Indian Head, 

 N.W.T., July 1, (Fletcher). 



204. Tahanus lasiophthalmuSy MacG. Ottawa, 29 May, (Fletcher). 



204. Tahanus lineola, Fab. Ottawa, Aug. 8, (Fletcher). 



I'ahanus Oshurni, Hine. Deloraine, Man., 1902, (Fletcher). 



207. Tahanus Reinwardtii, Wied. Millarville, Alta., July 27, 1903, 

 (Dod). 



207. Tahanus septentrionalis , Loew. McLeod, Pincher, Pine Creek, 

 Spruce Grove, Tofield, all N.W.T., July 2-27, (Willing). 



207. Tahanus sonomensis, 0. S. June 20, Vancouver, (Harvey); Mt. 

 Arrowsmith, B.C., July 28, (Fletcher). 



209. Tahanus vivax, 0. S. Little Current River, Hudson Bay slope, 22 

 July, 1903, (Wilson). 



209. Tahanus zonalis, Kirby. Mamamattawa, Hudson Bay slope, 21 

 June, 1903, (Wilson). 



230. Anthrax euTnenes, 0. S. Victoria, (Anderson). 



259. Cyrtopogon dasylloides, Will. Victoria, (Anderson). 



351. Paragus hicolor, Fab. Victoria, (Anderson). 



352. Chilosia lasiophthalmus, Will. Victoria, (Anderson). 



361. Melanostoma stegnum, Say. Common, end of April, Vancouver, 

 (Harvey). 



363. Didea laoca, 0. S. One male, April 24, Vancouver, (Harvey). 



363. Lasiophthalmus pyrastri, L. Victoria, (Anderson). 



364. Syrphus americanus, Wied. Common, April-May, Vancouver, 

 (Harvey). 



