ART. 29 IMMATURE STAGES OF SARCOPHAGID FLIES GREENE 15 



above the cavity is a slight depression (seen laterally). Each spirac- 

 ul'ar plate with three distinct lobes, shining, very dark, red, with 

 three yellow slits; middle slits about parallel; spiracnlar plates 

 separated by a space at least as wide as the width of one plate; each 

 spiracnlar plate h'as an extension along the upper and outer edges. 

 Anal opening conspicuous, depressed, with an elevated ridge encir- 

 cling it, located close to under edge of the cavity; no anal tubercles. 

 Anterior spiracles missing in this material. 



Length, 6 mm. ; diameter, 2 mm. 



Charleston, Missouri, June 22, 1915; E. H. Gibson, collector. 

 Beared from L. gibhosiis. Webster No. 13668. 



22. METOPOSARCOPHAGA PACHYPROCTA Parker 



Medium sized, dull to subshining, yellowish red to dark red. Pos- 

 terior cavity deep, somewhat qu'adrate, medium sized, located on the 

 horizontal axis; tubercles around the edge of the cavity indistinct; 

 laterally the posterior end is deep notched. Each spiracnlar plate 

 is dull, deep red with three narrow, yellow slits, the first and middle 

 one parallel ; middle slits nearly parallel ; at the lower, inner edge of 

 the spiracular plate is a small wrinlde. Anal opening and a wrinkle 

 on each side well defined and darkened ; no anal tubercles. Anterior 

 spir'acles at the apex of the puparium, a little wider than high ; each 

 spiracle has 11 yellow lobes; basal portion of spiracle dark reddish. 



Length, 7 mm. ; diameter, 2.5 mm. 



Beaufort, North Carolina, from terrapin eggs; issued September 

 27, 1915 ; W. P. Hay, collector. 



23. SARCOPHAGA BARBATA Thomson 



Large, dull, dark red, dorsal surface definitely arched. Posterior 

 end reduced in diameter with an elliptical, deep, transverse cavity 

 located nearly centrally ; tubercles very faintly showing ; each side of 

 and below the cavity is a good sized, faint depression. Each spiracu- 

 lar plate has three narrow slits of unequal length; the first slit is 

 sharply bent near its lowest third and directed toward the lower 

 end of the middle slit ; spiracular plates separated by a space equal 

 to about half the width of one plate; middle slits very slightly 

 oblique, converging toward their apex. Anal opening depressed, 

 some distance below the cavity ; each side of anal opening is a very 

 small, conical tubercle; these tubercles are separated by a space 

 equal to one and one-half times the height of one tubercle. Anterior 

 spiracles are located close to the apex of the puparium ; each spiracle 

 has 12 small, yellow lobes; lower area of the spiracle dark reddish 

 brown. 



Length, 9.5 mm. ; diameter, 4 mm. 



