7(i A REVISION OF THE NEARCTIC SCIOMYZIDAE 



This is a very distinct species, although in general similar to 

 sarotogenms. It differs, however, in having the marginal cell 

 marked with Avidely separated fuscous spots; not infuscated along 

 the costa. In some intensely colored specimens the spots coalesce 

 somewhat, but there is no tendency to become actually infus- 

 cated along the costa. The transverse bars are broader than in 

 saratogensis, but sometimes dividing into pairs, or they are 

 sometimes fused into broad spots completely crossing the cells. 

 Generally these bars are narrow and irregularly arranged, and 

 the median longitudinal streak is always evident. The clear 

 areas are quadi-ate. The mesonotum is distinctly striped; the 

 dark median and the two gray stripes extend to and upon the 

 scutelluni. Pi'aescutollar bristles well developed. Second an- 

 tennal joint robust, sometimes longer than broad, and may be 

 longer than third. Dorsum of abdomen generally with a dis- 

 tinct nuHlian fuscous sti'ipe. Length. — 5 to 7 mm. 



Originally dcscril:)ed from Philadelphia. This species will be 

 found in some collections under T. hosci Desvoidy. Loew, in his 

 monograph,'- says Desvoidy's description is unrecognizable. I 

 do not care to contest this assertion. 



Specimens Examined. — 23 cT, 19 9. 



Canada: Sandford, Ontario, June 19, (C. R. Crosby), [Cornell]. 



Maine: Machias, July 20, (C. W. Johnson), [B. S. N. H.]. 



Massachusetts: llorscneck Beach, July 30, (C. W. Johnson), [B. S. 

 N. H.]. 



Connecticut: [no data). 



New York: Clifton Springs, August 1-4; Dryden Lake, Tompkins County, 

 June 16; Ellis to Slaterville, June 13; Ithaca, July to August; McLean, June 

 to July; Malloryville, June 18-20; Mud Creek, Tompkins County, June 17-20; 

 Slaterville to Caroline, June 14; [all Cornell]. 



New Jersey: [no other data], (Williston). 



Pennsylvania: Bryn Mawr, June 4; McConnellsburg, Fulton County, 

 June 4; Swarthmore, July 11, (Cresson); [all A. N. S. P.]. 



Maryland: GijTnont, May 25, (C. W. Johnson), [B. S. N. H., and 

 Johnson]. 



Virginia: Dyke, May 28, (W. L. McAtee); Wallop's Island, June 1, 

 (W. L. McAtee), [Biol. Surv.]. 



North Carolina: Hertford County, June 9, [Johnson]. 



Montana: Beaver Creek, 6300 feet alt., August, (S. J. Hunter), [Kansas]. 



Colorado: Grant, Geneva Park, 9500-10,000 feet alt., June 22, (L. O. 

 Jaek.sonj, [Biol. Surv.]. 



•'■' i, p. 108. 



