Vol. XXVl] ENTOMOLOGICAL NEWS. 455 



especially fore tibiae which are much longer than their femora and 

 have a shining black swelling beneath, slightly beyond the middle 

 (Fig. 5). Middle tibiae sinuate. Hind tibiae dilated apically with a 

 short stout spur at flexor apex accompanied by a comb of few long 

 hairs ; the spur not over-reaching the tarsal notch. Basal joint hind 

 tarsi much shorter than following joint with a large notch at its base 

 (Fig. 6). Anal cell open; sixth vein weak. Length, 1.7 mm. 

 $ . Unknown. 



Type. $ , Las Cruces, New Mexico, Sept. 25, 1895 (T. D. 

 A. Cockerell), [U. S. N. M. No. 19925]. 



This species I found associated with M. tibialis Coq. in the 

 U. S. National Museum collection. It is very similar to that 

 species, but the characters on the legs are at once distinctive. 

 The tibial spur simulates that of armata, but is not as long and 

 the tarsal notch is more extensive. The second joint of the 

 hind tarsi is noticeably much longer than the preceding one 

 and the fore tibiae also unusually long and slender with the 

 characteristic black swelling at its middle. I am not aware 

 whether these characters exist in tibialis Coq. or not. 



Mythicomyia armata new species. Fig. 3. 



$ . Black, thinly gray pruinose. Frons, face, cheeks, oral margin, 

 humeri notopleural line and post-alar and pleural spots, halteres, apices 

 of abdominal segments, venter, apical half of fore and of middle fem- 

 ora, hind femora except basal spot, all tibiae and bases of tarsi, yellow. 



Third antennal joint ovate twice as long as second; style cylindrical, 

 more than half as long as third. Hind tibiae with a long apical spur, 

 over-reaching the tarsal notch (Fig. 3). Anal cell open. Length, 1.7 to 

 2.0 mm. 



9 . Unknown. 



Type. $ , Highrolls, New Mexico, May 30, [A. N. S. P. 

 No. 6098]. 



A specimen before me from the Yosemite Valley, Califor- 

 nia, lacks the antennae, but it is evidently this species. 



The spur of the hind tibia, which is no doubt functional in 

 connection with the tarsal notch, is very characteristic of this 

 species. It is not present in any other species known to me, 

 at least as strongly developed as here. Usually such spurs are 

 minute and scarcely noticeable. 



