288 THOMAS SAY FOUNDATION 



Bishopp ) , some bred from cow manure, horse manure 

 and straw. 



It is possible that some of the references cited 

 at the beginning of the description may not refer to 

 this species, as it belongs to a group which are closely- 

 related and have not hitherto been separated. The 

 rearing from a grasshopper, unless from a dead and 

 decaying one, looks unlikely. 



Walker's description seems fairly applicable to 

 this sj)ecies, especially as he mentions the red-legged 

 form. 



The series of species including galeata, australis, 

 timida, assidua, cingarus, cidminata, peltata. xantlio- 

 soma and haheri form what may be called the assidua 

 group, closely related species, mostly southern, which 

 appear to be readily separable on genitalic charac- 

 ters. One of these, peltata, has perceptible villosity 

 on the hind tibiae; two of them, bakeri and ocantJio- 

 soma, have a small pair of apical bristles on the scu- 

 tellum. The South American material in the writer's 

 collection shows still other members of this group, 

 and it is very probable that further collecting will add 

 to the nmnber in tropical parts of North America. 

 It will be a matter of considerable time and care to 

 correctly associate the females with these various 

 species. 



No. 138. Sarcophaga cingarus n. sp. 



Male. Front .172 of head (average of three, — 

 .171, .170 and .17.5). Like assidua except as follows: 

 Parafrontals and parafacials more deep golden poUi- 

 nose, which color extends to the front part of the 

 bucca; fifth sternite with two narrow yellow lobes, 

 parallel but rather far apart, with short tips covered 

 with short black hairs; forceps viewed from behind 

 not at all separated from each other; tips truncate 

 obliquely; in profile nearly straight, with a small 

 point a little back of the apex on the outer edge; 

 accessory plate yellow, triangular, rather large; pos- 

 terior clasper brown, rather straight, stout; when 



