THE CANADIAN ENTOMOLOGIST. ' 167 



men rufous, each with a black dorsal spot ; margin of the segments pale 

 with a whitish fringe ; the fourth segment has a pair of round, red, dorsal 

 spots. ' 



Variety B. Antennae all black. 



441. Tabanus zonalis A7r(^7.^Length of body 7}^ lines. Taken 

 with the preceding. 



Body black, with a few hairs of the same color, especially at the sides 

 of the trunk. Antennre reddish at the base ; sheath of the proboscis, 

 and palpi, black ; haustellum testaceous ; breast whitish from inconspicu- 

 ous down ; tubercles before the wings subferruginous ; wings subtestaceous 

 with some of the nervures black ; knob of the poisers reddish ; thighs 

 black, reddish at the tip ; tibiae, and tarsi, except the anterior pair, which 

 are black, as well as the apex of the anterior tibiae, red ; abdominal seg- 

 ments above and below margined with white decumbent down and fringe. 



442. Chrysops sepulchralis Fabr. — Length of body 6 lines. 

 Taken with the preceding. 



[3x5.] Body black, slightly downy. Head hoary from pubescence 3 

 proboscis with a black sheath and testaceous haustellum ; feelers black ; 

 antennae red at the base ; below the antennae is an obtriangular levigated, 

 and naked space, with rounded angles, and somewhat elevated ; behind 

 the antennae in the frontal space, between the eyes, the ordinary levigated 

 and naked areas, which in Tabanus are longitudinal, in Chrysops are 

 transverse ; sides of the trunk hairy with black erect hairs, it is also 

 marked above with four longitudinal hoary stripes formed by invisible 

 pubescence ; underneath the trunk is covered with down of the same 

 description and color, and set with tufts of longer hairs ; wings white, 

 with the costal margin and a middle abbreviated band, and nervures 

 brown ; legs and abdomen black, and extremity whitish from down. 



[An European species.] 



FAMILY SYRPHID/E. 



443. SCiEVA RiBESii Fabr. — Length of body 4 lines. Taken with 

 the preceding. 



Head concavo-convex ; underneath black, with the edge fringed with 

 whitish hairs ; vertex black ; face below the antennae yellowish ; hoary 



