SARCOPHAGA AND AIXIES 127 



No. 52. Sarcophaga excisa n. sp. 



Male. Front rather wide, .185 of head; para- 

 frontals and parafacials silvery, the latter with the 

 usual row of small bristles below; antenna dark 

 brown or blackish; third joint hardly double the sec- 

 ond, reaching four-fifths of the way to the vibrissa, 

 which are a little above the edge of the mouth ; arista 

 plumose a little over halfway ; palpi rather long ; pro- 

 boscis short, fleshy; bucca about one-third the eye- 

 height; back of head with three rows of black hairs 

 and some pale beard below ; outer vertical bristles ab- 

 sent. 



Thorax gray pollinose, with the usual 3-5 stripes, 

 the central one rather narrow; ps dc 3; ant acr well 

 developed; prsc of medium size; stpl 3. Scutellum 

 with the usual bristles, viz., marginals, two large; pre- 

 apical, one rather small; apical, one rather small and 

 slender. 



Abdomen gray pollinose, tessellated, with rather 

 distinct median blackish line; first and second seg- 

 ments with only lateral bristles; third with a pair of 

 median marginals and two laterals; fourth segment 

 red at apex and with a row of more than a dozen bris- 

 tles. 



Hypopygium entirely yellow and quite shining; 

 the first segment of medium size, with a row of bris- 

 tles across the hind margin; second segment globose, 

 with numerous erect, coarse black hairs. Forceps 

 black excej)t on basal part, rather short and uniformly 

 curved forward, ending in a point on the inner side; 

 viewed from behind they diverge suddenly almost at 

 the tip. Accessory plate yellow, shining, arcuately 

 excised at tip, the posterior lobe slender, the anterior 

 merely forming a blunt angle. Claspers small, brown- 

 ish; posterior with short, deep excision before the 

 hooked tip ; anterior shorter and more slender. Penis 

 with rather long basal segment; the distal segment 

 long and stout, shining black or dark brown, square 

 in cross section as far as the middle; bent in and en- 



