SARCOPHAGA AND ALLIES 135 



No. 57. Sarcophaga reversa n. sp. 



Male. Characters like those of excisa except the 

 following: Front .146 of head. Antenna? reaching 

 three-fourths of the way to the vibrissa?. Middle tibia 

 with three bristles on outer front side. The bristles 

 of the first segment of hypopygiuni are not very 

 strong. Forceps red nearly to apex, with very min- 

 ute spines on the posterior and outer side, the base 

 with erect fine hair; in profile with a distinct hump 

 behind, nearly straight from this to apex, which turns 

 forward very sharply. Viewed from behind they 

 gradually diverge from the base, and the terminal 

 hook is bent somewhat laterally. Accessory plate 

 rather elongated, with a blunt point; posterior clasp- 

 ers rather long, slender, evenly curved forward to tip ; 

 anterior claspers short and rather thick. Penis with 

 somewhat short basal segment, the distal segment 

 shining black except at base, characterized by a long 

 projecting loop at the end which doubles back on the 

 front side, the lateral processes attach at about the 

 middle of this segment and extend forward in such a 

 way that in profile there is a large visible opening in 

 the loop. Fifth sternite black, the two sides closely 

 approximated for a considerable distance, then 

 spreading apart at right angles and bearing yellow 

 pubescence along this edge. 



Length 7.5-9 mm. 



Numerous males, several from LaFayette, Ind. ; 

 one from Vincennes, Ind., May 8, 1914; seven from 

 New Bedford, Mass. (Hough collection) ; two from 

 Woods Hole, Mass. (A. H. Sturtevant) ; one from 

 Melrose Highlands, Mass. (H. E. Smith) ; five from 

 Manahawkin, N. Jersey; one from Clementon, N. J. 

 (Harbeck) ; one Darby, Pa. (Harbeck) ; one Greene 

 Co., N. Y. (Carnegie Museum) ; one Montreal, Que- 

 bec (Harbeck) ; one Sacramento, Cal., and one witli- 

 out locality, No. 655, both labeled "Collection C. V. 

 Riley" (U. S. Nat'l Museum) ; one Moscow, Idaho; 

 one Camp Howard, Idaho (author's collection) one 



