SAKCOPHAGA AND ALLIES 45 



No. 11. Agria affinis Fall. 



Fallen, Acta Holmiae, 1816, 230; Dipt. Suec. Miiscides, 

 1820, 39 (both Musca). 



Pandelle, Rev. Ent., xv, 173 (Sarcophila biclitnis), 1896. 

 Bezzi, Pal. Kat., iii, 469, bibliography, etc., 1907. 



Male. Front narrowed below ocelli, .124 of head 

 (average of four, — .117, .120, .125, .132) ; face and 

 front silvery, liairs of parafacials distinct but varying 

 in number; antennae blackish, third joint twice the 

 second, reaching four-fifths of the way to the vi- 

 brissse; bucca nearly one-third the eyeheight; outer 

 vertical not differentiated. 



Thorax blackish, but Avlien viewed from behind 

 gray with three black stripes, the middle of which 

 extends to the end of the scutellum; 3 ps dc; 3 stpi; 

 ant acr 2 pairs, large; prsc rather large; hum 3; npl 

 2; scutellum with three marginal pairs and a smaller 

 discal, no apical (or the inner marginal might be re- 

 garded as a very large apical pair). 



Abdomen rather silvery pollinose; viewed from 

 behind there is a median black stripe and a large 

 l)lack spot each side on segments two, three and four ; 

 first and second segments with only lateral small 

 bristles; third with a small median marginal pair; 

 fourth with marginal row of about 18. 



Hypopygium black; segments as described 

 above; forceps black, ^ery short and blunt; accessory 

 ])lates developed into a large yellow forceps-like or- 

 gan on each side, as long as tlie true forceps ;posterior 

 claspers yellow, very low in position; anterior ones 

 upriglit, with a hook on the posterior distal angle, 

 the anterior point not much curved; penis mostly 

 black, very thick and short, with a snout-like process 

 in front turning down toward the base ahnost to the 

 bodj^ of the liypopygial segment. 



Legs deep ]))ack; middle femora witli coml) at 

 tip below on hind side; midcHc ti})ia witli two smallish 

 ])ristles on outer front side: liind tibia» not villous; 

 front basitarsus witli some l)ristles below at base. 



