128 THOMAS SAY FOUNDATION 



larged apically with a pair of large diverging hooks 

 on the back near the tip. Underneath the tip is a 

 white ear-hke margin on each side and a central lip. 

 The other apical parts rather hidden in the specimen. 

 Fifth sternite distinctly visible; blackish for almost 

 half its length, suddenly changing to yellow ; the inner 

 apical angles covered with short, black, hook-like 

 bristles. 



Legs black ; middle femur with short comb below 

 on posterior edge; middle tibia with two bristles on 

 outer front side; hind tibia without villosity. 



Wings hyaline; small costal spines; third costal 

 segment fully equal to fifth. 



Length, 9 mm. 



One male, Woods Hole, Mass., June 25, 1913 

 (A. H. Sturtevant). 



Holotype— Male, No. 20.514, U. S. N. M. 



No. 53. Sarcophaga eleodis n. sp. 



Male. Front .183 of head (average of five, — 

 .167, .179, .183, .187, .197). Like e.rcim except in 

 genitalic characters. The forceps have a large, hump- 

 like protuberance on the basal attached part, covered 

 with recumbent long black hair; between this and the 

 remainder of the forceps is a deep excision in profile ; 

 the apical free part of the forceps is black, enlarged 

 and bent forward in the middle, with sliort reclinate 

 spines behind, the extreme apex curved forward and 

 sharp. Accessory plate somewhat rounded, the api- 

 cal angle, however, a little drawn out, darker in 

 color, with a few long hairs. Posterior clasper strong, 

 nearly black, with hooked point ; anterior clasper low 

 and short, yellow, stout at base; penis with a rather 

 short basal segment, the distal one brown and shining, 

 rather elongated, semicircular in cross section on 

 basal part, with a pair of recurved hooks on the back 

 at tip; the apical part bears in front a winglike ex- 

 pansion on each side, the two uniting in a pointed 

 plate below; in front of the pair of liooks is a concave 

 space before the extreme tip. Fifth sternite entire- 



