Ai!T. 29 IMMATURE STAGES OF SAECOPHAGID FLIES GREENE 21 



side of the anal opening is a large, rounded tubercle. Anterior 

 spiracles close to the apex; each spiracle has about 80 small, 3'ellow 

 lobes; base of spiracle is deep reddish. 



Length, 8-9.5 mm. ; diameter, 3-4 mm. 



Lunenburg, Mass., 6114; K. T. Webber, collector. In collection of 

 K. E. Parker. One specimen from Melrose Highlands, Massa- 

 chusetts, May 25, 1916; K. T. Webber, collector. In National Collec- 

 tion. 



38. SARCOPHAGA KELLYI Aidrich 



Medium size, dull, dark red. Posterior cavity nearly round, 

 large, located centrally on the horizontal axis; tubercles on the out- 

 side edge indistinct. Each spiracular plate is deep reddish black " 

 with three yellow, narrow slits; middle slits about parallel; each 

 plate has an extension nearly all the way around it and a wrinkled 

 area on the lower, inner edge ; spiracular plates separated by a space 

 about equal to the width of one plate. Anal opening small, depressed 

 and located a short distance below the posterior cavity ; no anal tuber- 

 cles; on each side of the anal opening and between that opening and 

 the posterior cavity is a depressed area. Anterior spiracles close to the 

 anterior end of the puparium; each spiracle has six small, yellow 

 lobes ; basal portion of the spiracle is reddish brown. 



Length, 8 mm. : diameter, 2.5 mm. 



Gila Eiver Valley, Arizona, August 21, 1913; R. N. Wilson, col- 

 lector; Webster, Xo. 10535. Specimen from Minot, North Dakota, 

 August 1919; C. N. Ainslie, collector; Sioux City, No. 19145. Elida, 

 New Mexico ; H. E. Smith, collector ; Webster, No. 10244 ; cage 2926. 



39. RAVINIA PENICULATA Parker 



Small, dull, reddish-yellow. Posterior cavity, medium sized, ellip- 

 tical, located centrally on the horizontal axis; tubercles on the edge 

 of the cavity not very distinct; three pairs above and one pair be- 

 low the center line ; those close to the horizontal axis more distinct. 

 Each spiracular plate reddish yellow, subshining with three yellow 

 slits; of nearly equal length; each slit on a broad, well defined lobe; 

 spiracular plates separated b}' a space from half to two-thirds of the 

 width of one plate. Anal opening distinct, located some distance 

 below the cavity ; on each side of the anal opening is a well defined 

 tubercle. Anterior spiracles located at the apex of the puparium; 

 each spiracle has 10 pale yellow lobes; the lower part of spiracle is 

 reddish. 



Length, 4-5 mm. ; diameter, 1.5-2 mm. 



No data. Six puparia in collection of R. R. Parker; two puparia 

 in national collection. 



