SARCOPHAGA AND ALLIES 239 



There is some difference in the length of the plu- 



mosity of the arista; in occasional specimens it is not 



very much shorter than in many other Sarcophagas. 



' Holotype.— Male, No. 20553, U. S. N. M., from 



La Fayette, Ind. 



Allotype.— Female, No 20553, U. S. N. M., 

 from Evansville, Ind. 



No, 113. Sarcophaga rileyi n. sp. 



Male. Front .229 of head (average of five, — 

 .212, .212, .234, .236, .253) ; parafrontals and para- 

 facials silvery with a tinge of yellow; frontal stripe 

 reddish, rather narrow, not sharply defined above. 

 Parafacials with the usual row of hairs, ratlier large 

 below; antennae brown or reddish brown; third joint 

 twice as long as second, reaching four-fifth of the way 

 to the vibrissa, which are at tlie oral margin. Arista 

 plumose a little over halfway; frontal bristles about 

 ten, several pairs reclinate, gradually diverging, 

 reaching to the middle of the second antennal joint. 

 Ocellar bristles present; outer verticals absent; palpi 

 and proboscis black; bucca one-third the eyeheight, 

 with black hairs to metacephalic suture. Back of 

 head with three to four rows of black hairs, a few 

 whitish ones in the middle and below. 



Thorax gray pollinose, with the usual three to 

 five black stripes; the submedian gray stripes are 

 divided to the suture; ps dc four; ant acr none; prsc 

 one; stpl three; scutellum with two marginals, one 

 preapical and one small apical. 



Abdomen gray pollinose, tessellated, with 

 median black stripe; first and second segments with 

 only lateral bristles ; third with a pair of erect median 

 marginals and two laterals; foiu'th with a median 

 marginal row of about 14; fifth sternite brown, not 

 divaricate, the two sides touching each other to their 

 tip the same as in peltata, and ending in a rather sliarp 

 point. 



Hypopygium black, reddish in middle and be- 

 hind, sometimes quite largely so; first segment polli- 



