160 THE CANADIAN ENTOMOLOGIST 



Ventral plates as a whole, with their sides slightly converging 

 posteriorly though they may appear approximately parallel; vesti- 

 ture decreasing in length posteriorly, that of third very short and 

 erect. Posterior mstrgin of fourth notum of same colour as genital 

 segments. Fifth ventral plate (v. p. 5) typical. 



Chaetotaxy .-^Second segment without marginal bristles, third 

 with two; fourth with complete row ending ventrally in long hairs. 



Genital Segments.- — Prominent; dull orange; vestiture of both 

 equally long. First (9 s.i), large, in profile slightly arched, marginal 

 bristles absent; second (9 s.z), rotund, not flattened; anal area 

 small, its upper limit not extending to middle of posterior surface. 

 Forceps darkened, tip very strongly bent forward, in profile vesti- 

 ture extends to forward bend, prongs approximated to bend. 



Genitalia. — Head of penis large and its structure complicated. 

 Tips of posterior claspers (a.c. and p.c.) bent forward, flattened 

 dorso-ventrally. Accessory plates hairy (a.c). 



( 9 ) Not known. 



Described from 1 male specimen. 



Range. — Type specimen taken at Niagara Falls, N.Y. 



Aside from the striking difference between this subspecies 

 and Sarcophaga fulvipes (Macquart), the point of greatest in- 

 terest is the extremely heavy beards of the hind tibiae, which 

 are the most striking of any species known to the writer. The 

 hairiness of the middle tibia is also unusually long and abundant. 

 Considering the extreme weakness of the middle sternopleural 

 bristle, probably specimens will be found with this lacking, in fact, 

 of the two specimens of 5*. fulvipes fulvipes examined, one has 

 two sterno-pleurals on each side, the second two one side, three 

 on the other. Comparatively, the posterior or lower calypter is 

 very large. 



The single specimen described belongs to the collection of 

 C. W. Johnson, of Boston, as does one of the two specimens of 

 S. fulvipes fulvipes examined. The latter were taken at St. Augus- 

 tine, Florida. The genitalia of both subspecies are identical in all 

 respects. The advisability of giving this specimen subspecific 

 ranking may perhaps be questioned, but it seemed to me wiser 

 to err in so doing than that such an extreme variation should be 

 lost sight of. It may be a case of melanism. 



