AET. 10. PUPAKIA OF 100 MUSCOID FLIES GREENE. 13 



9. MEGAPARIA OPACA Coquillett (Megapariopsis opaca Coqnillett). 



Large; elongated, very finely rugose, dark red. Upper surface 

 faintly depressed. Spiracles shining black, located on the sides 

 of a deep depression, which is coarsely rugose. The upper edge of 

 this pit-like depression is rounded, lower part more flattened and 

 projects off rather sharply, along the bottom, from the puparium. 

 Below the edge of this depression is a prominent, rugose surface. 

 Anal opening just below this prominence. Each spiracle has three 

 slits, which are slightly yellowish; also a prominent button. On 

 each side of the puparium, about the apical fourth, is a cylindrical, 

 reddish yellow tubercle. 



Length, 11 mm. ; diameter, 3.5 mm. 



10. ZELIA VERTEBRATA Say. 



Very large, subshining, dark red. Upper surface in profile, nearly 

 straight. The upper half of the posterior end flattened. Spiracles 

 black, slightly raised above the surface and located in a shallow 

 pit-like depression; the depression above the longitudinal axis. 

 Each plate has three slits nearly parallel, each slit on top of a well- 

 defi.ned ridge. Button round. Anal opening very remote from 

 spiracles, well below the longitudinal axis. On the side, near the 

 apex, is a small, horn-like projection, the anterior spiracle. 



Length, 13.75 mm. ; diameter, 4 mm. 



11. BESKIA AELOPS Walker. 



Elongated; shining, yellowish red, tapering gradually, smaller 

 toward the caudal end. Spiracles decidedly tuberculate, shining red, 

 diverging, nearly touching at the base. The tubercles are roughly 

 granular. The upper portion slightly larger, smooth, shining and 

 divided into three sections or lobes. Each lobe has from about 

 nine to eleven very small slits, each on a small elevation or ridge. 

 Button very small, round. Spiracles located on the longitudinal 

 axis, mostly below the line. Anal opening very small, on the under 

 side of the puparium, the distance a little more than the length of 

 one tubercle. 



Length, 7 mm.; diameter, largest, 2 mm.; smallest, 1 mm. 



12. OESTROPHASIA OCHRACEA Bigot (Ormia ochracea Bigot). 



Large ; dull-red puparium. Spiracles subshining, black, protuber- 

 ant, well separated at the base, slightly larger at the base. Spiracles 

 located on apex of tubercles. Each plate has three serpentine slits 

 and a round button near the middle. Spiracles located just above 

 longitudinal axis. Anal opening small, located quite remote from 

 the spiracles. 



Length, 7 mm. ; diameter, 3.75 mm. 



3136— 22— Proc.N.M.Vol.60 25 



