AET. 10. PUP ARIA OF 100 MUSOOID FLIES GREENE. 19 



poorly defined ridge. Button large, round, red, and with a faint 

 depression in the center. Between the spiracles is an elongated de- 

 pression, which is wider at each end. Spiracles located slightly be- 

 low the longitudinal axis. And opening quite large, decidedly 

 raised above the surface of the puparium, located far below the 

 spiracles. Anterior spiracles small, tuberculate, and reddish. 

 Length, 5 mm. ; diameter, 1.5 mm. 



34. EXGRISTA PYSTE Walker. 



Medium size ; shining, dark red ; posterior end, in profile, slightly 

 depressed dorsally and broadly rounded on the lower half. Stig- 

 mal plates shining black, slightly raised above the surface, sepa- 

 rated by a space nearly equal to the width of one plate. Each plate 

 has three dark-reddish slits, the upper and middle ones slightly 

 arcuate, the middle and lower slits closer together. Button large, 

 round, well defined. Spiracles located a short distance above the 

 longitudinal axis. Anal opening very small, far below the spira- 

 cles. 



Length, 6.T5 mm. ; diameter, 3 mm. 



SS. TACHINOPHTTO VARIABILIS CoquUlett (Euzenillia variabilis Ck>quiUett). 



Small; subshining, yellow or red; posterior end tuberculate; 

 tubercle located on lower half of puparium, viz, mostly below the 

 longitudinal axis. Stigmal plates shining black, slightly raised 

 above the surface and separated by a space nearly equal to the 

 width of one plate. Each plate has three short slits, which are nearly 

 straight; slits yellow, each located on a broad, slightly flattened, deep- 

 reddish ridge. Button large, round, and located near the center of 

 the stigmal plate. Spiracles located just below the longitudinal axis. 

 Anal opening large, located far below the stigmal plates. 



Length, 5 mm. ; diameter, 1.75 mm. 



J6. TACHINOPHYTO FLORIDENSIS Townsend. 



Small; dull, reddish yellow; posterior end tuberculate; bottom 

 surface of puparium nearly straight. Spiracles shining black, widely 

 separated, the space nearly equal to the width of one plate. Each 

 plate has three slits, each located on top of a well-defined ridge. 

 Button large, round. Spiracles located on a tubercle far below the 

 longitudinal axis. Anal opening small, located below near the base 

 of the large tubercle. 



Length, 4.25 mm. ; diameter, 1.25 mm. 



37. PHORICHAETA CINEROSA Coquillett (Polideosoma cinerosa Coqaillett). 



Small ; dull, dark yellowish red. Spirales shining black, narrowly 

 separated and located on a very prominent, rugose protuberance, 

 which is darker than the puparium. This protuberance is at an 



