8 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 60 



with the three lobes well defined apically; three yellow slits, shin- 

 ing; middle slits nearly parallel, or at most converging slightly 

 toward the apex; spiracular plates separated by a space equal to 

 half the width of one plate. Anal opening small, slightly depressed, 

 located a short distance below the edge of the cavity; no anal 

 tubercles. Anterior spiracles much wider than high, located a short 

 distance below the apex of the puparium; each spiracle has 18 small 

 yellow lobes; lower portion of spiracle is deep, dull red. 



Length, 7.5 mm. ; diameter, 2.75-3 mm. 



Dallas Texas, August 13, 1907; F. C. Pratt collector. Scavenger. 

 Also found in human excrement. 



%. SARCOPHAGA SECURIFERA VUleneuve 



Large, dull, dark red. Posterior cavity deep, large, elliptical, 

 located mostly above the horizontal axis; tubercles around the edge 

 of the cavity distinct; deeply incised in lateral view. Each spirac- 

 ular plate is shining black Avith three long, narrow, yellow slits; 

 the middle slits are parallel; at the lower inside edge of each 

 spiracular plate is a raised, roughened area ; spiracular plates sep- 

 arated by a space equal to about half the width of one plate. From 

 the lower edge of the cavity is a narrow, sinuous, keel-like ridge 

 extending to the anal opening; a row of very short setae the entire 

 length of this ridge; each side of the anal opening is a conical 

 tubercle and the two are connected by a roughened raised area. 

 Anterior spiracles arcuate, about twice as wide as high and having 

 10 small yellow lobes; reddish brown near the base. 



Length, 9-11 mm.; diameter, 3-4 mm. 



Washington, D. C, June 8, 1923 ; H. E. Ewing, collector. Reared 

 from decomposed liver. 



5. SARCOPHAGA COOLEYI Parker 



Large, dull, dark red. Posterior cavity medium sized, elliptical, 

 deep, and located on horizontal axis; two tubercles on each side of 

 cavity flattened; from the lower edge of the cavity and connected 

 with the lanal tubercles is a broad rounded ridge which forks and 

 connects the two anal tubercles. Each spiracular plate is black, sub- 

 shining; each plate has three yellow slits, the middle ones parallel. 

 Spiracular plates separated by a space about half the width of one 

 plate. Anal opening located between the two anal tubercles. An- 

 terior spiracles slightly more than twice as broad as high and having 

 16 yellow lobes; spiracle reddish brown near base. Spiracles lo- 

 cated at the end of the puparium. 



Length, 10 mm. ; diameter, 4 mm. 



Laurel, Montana, 1914. Reared from decayed fish. 



