SARCOPHAGA AND ALLIES 101 



hairs or bristles. Antennjc black; third joint slender, 

 twice as long as second, reaching four-fifths of the 

 way to the vibrissiu; arista plumose as usual; vibrisste 

 at oral margin, a few hairs above them on facial 

 ridge. Pal])i and ])roboscis black, ordinary. Bucca 

 one-third of eyeheight. Back of head with three rows 

 of black hairs behind the eye and abundant but not 

 very long whitish beard. Outer vertical bristles ab- 

 sent. 



Thorax gray pollinose when viewed from behind 

 with 3-5 black stri])es; 3 ps dc and 2 pairs large ant 

 acr; 1 large prsc; 3 stpl; on scutellum there are two 

 marginals, one preapical and one apical. 



Abdomen gray ])ollin()se with tlu'ce stripes, the 

 median one being quite constant, the lateral ones 

 changeable; first segment with only lateral bristles; 

 the second segment witli a small pair of median mar- 

 ginal bristles; the third segment with a large pair of 

 median marginal bristles and five laterals; the fourth 

 segment with a row of about 16. 



Hypopygiimi : first segment rather small, brown 

 pollinose, with a row of six or eight small bristles near 

 the apex; second segment small, reddish brown, sub- 

 shining, without c()nsj)icuous hairs or bristles. For- 

 ceps slender, yellow, not divergent, strongly hooked 

 forward and blackened at apex. Accessory plate short 

 but with an acute tip. Posterior clasper slender, 

 strongly hooked. Anterior clasper much stouter and 

 shorter, broad at apex; penis with rather long basal 

 segment, the distal one shining black, bent forward at 

 an angle; its flat posterior part expanded a])ically into 

 two lateral lobes, the median part black, com])rcssed; 

 fifth sternite with V-shaped opening bearing a few 

 hairs and delicate pubescence. 



Legs black; middle femur with short, well de- 

 veloped comb on hind side below; middle tibia with 

 two bristles on outer front side; hind tibia without vil- 

 lositv. 



