70 C. H. TYLER TOWNSEND. 



id. Saiindersia sigiiirera Will. 

 Colorado (Orillette) ; oue specimen. 



50. Juriiiia algeiis Wd. 



Sau Francisco j\It., Arizona ; found from base to summit. Most 

 abiuidant in spruce zone ; more in fir zone than at base ; sixteen 

 specimens (three coll. by Cordley), July 15 ; in coitii this date. Two 

 from Hart Little Spring, July 14. Of these eighteen specimens, 

 twelve ai'e males and six females ; the male may be known by the 

 elongate claws, and the exserted hypopygium. Two other secondary 

 sexual characters are quite constant : the occipital pile of male is 

 more clearly light brassy yellow, that of female deeper or more of a 

 buti-yellow ; and the front of the male is more silvery-white pollinose, 

 that of female being more of a golden-yellow pollinose. This species 

 ranges from Colorado and Wyoming through Dakota, Michigan, 

 Canada and New York to New Hampshire and Maine. 



Colorado (Gillette) ; one specimen bred from Hadena lignicolor. 



51. Juriuia apicifera Wlk. 



Colorodo (Gillette) ; one specimen bred from Cllnoeampa califor- 

 niea. This specimen has the face somewhat less golden than speci- 

 mens from Michigan. Northern specimensof Tachinidse seem often 

 to have the colors more deeply marked than those from more southern 

 localities. 



52. Jut'iiiia liystrix Fal>. var. ? 



Colorado ((4illette). A single specimen seems near to J. Jn/-ftrix, 

 and may perhaps be considered a variety of that species. 



53. Juriiiia n. s^i. (?) alF. latendis Mcq. 



Diflers from female of lateralis as follows : First joint of arista mnch longer, 

 about as long as second joint, distinct bristly hairs on sides of face below near 

 eye margin ; front, thorax and abdomen very similar in all respects, even in- 

 cluding the orbital and frontal bristles, but general form not quite so widened, 

 and anal segment without the yellowish silvery efflorescence, wholly shining 

 instead. Abdominal macrochjetie apparently quite the same; third anteunal 

 joint dark brown. Length hardly 10 mm. 



San Francisco Mt., Arizona ; one female near base of mountain, 

 July 14 (Cordley). This is near, but very distinct from J. latendi.'^, 

 with which it might easily be confused from its great similarit}'. 



A male specimen, from Hart Little Spring, near the base of the 

 mountain, July 14, is longer than the preceding, but is sufficiently 

 like it to be in all probability the same species. It agrees with it in 

 all the characters above outlined in contradistinction to lateralis, ex- 

 cept, of cour-^e, in the orbital bristles, but the antennse are wholly 

 pale reddish including the third joint. 



54. Blepharipeza bicolor Mcq. 

 Colorado (Gillette) ; two specimens. 



