SARCOPHAGA AND ALLIES 295 



of marginals, the intermediate rather small ; one pair 

 smallish subapicals and no apicals. The edge of the 

 scutellmn on each side bears a striking patch of dense 

 short yellowish white hairs (compare S. melampyga). 



Abdomen densely gray pollinose, tessellated, 

 with an indistinct median stripe; fourth segment al- 

 most wholly red in gromid color; second and third 

 segments also with a tinge of red; first and second 

 segments with only lateral bristles; third with a stout 

 median marginal pair; fourth with a marginal row 

 of about 16, of which the upper 10 are noticeably 

 stout at base and almost parallel, the intervening 

 space partly filled in with a row of hairs along the 

 two margins which face each other. 



Hypopygium red; first segment retracted, pol- 

 linose, with about six small bristles along the hind 

 margin; second segment globose, shining red, with 

 erect hairs, of which a few are somewhat bristly; for- 

 ceps shining black, long, slender, tapering and strong- 

 ly curved forward toward the tip. Viewed from be- 

 hind they are scarcely at all divergent. Accessory 

 plate short, rounded, blackish; posterior clasper shin- 

 ing black, suddenly narrowed on the front side at 

 about the middle, and with a slight notch on the outer 

 side near the tip; they are erect and the back edge 

 nearly straight; anterior clasper small, short and al- 

 most straight, shining black; penis unusually com- 

 plex; the basal segment almost invisible, the distal 

 segment with the back edge curved almost in a semi- 

 circle over the tip; the front edge inflated near the 

 base and almost transparent; beyond this at about 

 the middle it is deeply notched in front and from the 

 notch arises a round, smooth curved process with a 

 flat and somewhat transparent apex ; the curved apical 

 portion of the segment is wide and flat and within 

 its arc there is a thin median brown septum, on each 

 side of which at its base arises a long lateral process 

 developing into an irregular membrane. These proc- 

 esses are very conspicuous when viewed from behind 

 as shown in figure 142a. Moreover, in the back view 



