SARCOPHAGA AND ALLIES 181 



ones, which extend forward on the bucea below al- 

 most to the widening of the facial impression; outer 

 vertical bristles absent; ocellars minute; frontal bris- 

 tles about 12 in number, rather small, diverging raj)- 

 idly below and extending about as far down as the 

 middle of the second antennal joint. 



Thorax gray pollinose with 5 to 7 stripes 

 when view^ed from behind, the two submedian gray 

 stripes being each divided by a narrow dark line ; only 

 two ps dc developed, bristles all small anterior to 

 these ; no ant acr, prsc small, stpl two, scutellum with 

 two pairs of marginals, an almost imperceptible pair 

 of preapicals, which are widely separated, and a small 

 pair of apicals. 



Abdomen with the usual changeable tessellation, 

 median stripe very faint; fourth segment red at apex, 

 more broadly so at middle ; first, second and third seg- 

 ments with no median marginal bristles and only one 

 lateral ; fourth with a row of 8, stopj)ing abruptly on 

 the side. 



Hypopygium red, mostly shining; first segment 

 rather large with a median pollinose whitish stripe 

 and an interrupted row of six bristles ; forceps with a 

 hump on the attached basal part, the free part 

 straight, not at all tapering, enlarged at the apex 

 somewhat in the form of a foot witli an abnormally 

 large heel which bears a few little granulations, the 

 sharp toe projecting forward; the foot and ankle are 

 black; accessory plate developed into a long process 

 like a clasper but larger, the black tip curved forvv'ard 

 and rather sharp. Posterior claspers slender, 

 straight, with a small hook; anterior clasper very 

 small and short, with a curved black tin. Penis most- 

 ly yellow, rather small, the basal joint well developed, 

 the distal joint cur^'cd back and tlien forward ^vith a 

 widely spreading fla]) on each side, these are rather 

 concave in front and partially enclose some small 

 plate-like organs; fifth sternite very widely open U- 

 shaped, yellow, fringed with hairs. 



