SARCOPHAGA AND ALLIES 193 



one quite smooth in outline, bearing on the middle of 

 the front side a stout lobe turned toward the base and 

 black at tip and a pair of twisted hooklike organs 

 directed forward; fifth sternite exposed in a brown 

 ridge for a considerable distance before the excision, 

 behind which it rapidly diverges, with a brush of 

 black bristles along the edge. 



Legs black, stout; long villosity on the under 

 side of all the femora and the inner side of all the 

 tibite; this villosity is least on the front tibife, but is 

 strongly developed on the middle as well as the hind 

 ones; middle femur without comb; middle tibia with 

 single bristle on outer front side; hind tibia and hind 

 femur distinctly curved. 



Wings with brownish tinge; no costal spines; 

 third segment of costa longer than fifth and sixth to- 

 gether; first vein bare; third hairy almost half way 

 to crossvein. 



Female. Front .266 of head, with the usual or- 

 bital bristles; outer vertical bristles distinct; the api- 

 cal bristles of the scutellum are fully as strong as the 

 two lateral pairs, all very stout at base. Genital seg- 

 ment red, its margin thickened and forming a ver- 

 tical slit of which the upper part is guarded by a very 

 dense row of short bristles. The first and second 

 sternites bear respectively four and two stout bris- 

 tles; third and fourth also each have a pair which are 

 less conspicuous. The bristles of the fourth tergite 

 extend along the entire lower surface, there being 

 about 10 very stout ones below the lateral angle. 

 Both the angle and tergite are prolonged somewhat 

 into a pointed flap which also bears heavy, short 

 bristles. 



Length of male, 19 mm.; of female, 18 mm. 



One male and two females. The male is from 

 Santa Marta, Colombia, May, 1913, collected by J. 

 H. Egbert (LL S. IN". M.) ; female from Punta Are- 

 nas, Costa Rica, collected by Frederick Knab (IT. S. 

 N. M.) ; the other female from Brazil, (II. H. 

 Smith) in Dr. Williston's collection. 



