158 



THE CANADIAN ENTOMOLOGIST 



very thick beard of very long, coarse hairs extending full length 

 of tibia; middle femur clothed beneath nearly to distal extremity 

 with long hair, posterior ventral row of bristles represented only 

 by a few short bristles on about distal fifth ; tibia clothed beneath 

 on about its distal half with long, dense hair that anteriorly and 

 posteriorly becomes coarser and beard-like, submesotibial bristle 

 absent; vestiture of third ventral plate short and erect; genital 

 segments dull orange, vestiture of both equally long, first large 

 and without marginal bristles (possibly variable). 



Fig. 7 .—Sarcophaga fulvipes dissidia, n. subsp. A, Genital 

 segments of (f; B, fifth ventral plate of cf . 



Head. — ^Viewed from side, parafrontals and gense with dark re- 

 flections. Breadth of front at narrowest part about three-fifths 

 eye width; cheek height approximately one-third that of eye. 

 Front prominent, sides of frontal vitta slightly converging back- 

 ward. Second antennal segment dark; third about twice length 

 of second; arista plumose on basal two-thirds. Back of head 

 somewhat convex, with three rows of black cilia behind eyes, 

 otherwise clothed with yellowish white hair that completely covers 

 the metacephalon. Cheeks clothed with black hair. Gena with 

 a single row of bristle-like hairs near lower eye orbit. Palpi dark. 



Chaetotaxy. — Lateral verticals absent; vibrissse inserted just 

 above line of oral margin. 



Thorax.- — Mesonotum clothed with erect, almost bristle-like 



