AUT. 10. PUPAEIA OF 100 MUSCOID FLIES GKEENE. 17 



26. HYPHANTROPHAGA HTPELANTRIAE Townsend. 



Medium size; siibshining, yellowish red. Spiracles shining black, 

 very dark red in the center, slightly raised above the surface, widely 

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

 plate has four serpentine, yellowish slits. The two bottom slits re- 

 semble the letter S, with a long tail. Spiracles located a little more 

 the height of one plate above the longitudinal axis. Button rather 

 large, round, flat, and reddish. Anal opening small, far below the 

 spiracles. 



Length, 6 mm. ; diameter, 2.25 mm. 



27. EXORISTA EUORTAE Townsend (Oxcxorista eudryae TowniienA). 



Medium size; rather shining, dark red. Spiracles shining black, 

 slightly raised above the surface, widely separated, the space about 

 equal to twice the width of one plate. Between and below the spir- 

 acles is a prominent, ridgelike elevation much higher than the stig- 

 mal plates. Each plate has three serpentine, yellowish slits. (Some- 

 times the two slits at the bottom are connected and form one long 

 slit.) Button large, round, well defined. Anal opening large, far 

 below the spiracles. Spiracles are located on the upper side of the 

 longitudinal axis. 



Length, 7 mm. ; diameter, 3 mm. 



Note. — In one specimen, on one plate only, the two bottom slits 

 are united, showing only two slits instead of three. 



28. FRONTINA FRENCHII Williston (Achaetoneura frenehii Williston). 



Large; dull, deep red to nearly black. Spiracles only slightly 

 raised above puparia; black on sides and yellowish red on upper 

 surface ; located about the width of one stigmal plate above the lon- 

 gitudinal axis and separated by a space nearly equal to width of one 

 plate. Three serpentine slits to each stigmal plate and a well-defined 

 button. Anal opening very remote, quite near the lower edge of the 

 end view. 



Length, 8.5 mm. ; diameter, 4 mm. 



29. LINNAEMYIA FULVICAUDA Walton (Gymnochaetopsis fulvicauda Walton). 



Medium-sized; faintly rugose, dull reddish puparium. Spiracles 

 slightly raised above surface, shiny black above and faintly granular 

 around lower edge, located on longitudinal axis, mostly above, nearly 

 touching above and more widely separated below. Each spiracle 

 divided into three lobes, each lobe with a serpentine, nearly black 

 slit. A distinct round button. At the bottom of and between the 

 stigmal plates is a prominent, raised area which terminates in a 



