LIST OF DIPTERA. 171 



Tabanus inconspicuus, n. s., fern. Canus, capite thoracisque vittis 

 quinque flavo-albidis, abdomine piceo subtus marginibusque fid- 

 vis, pedibus canis, tibiis fulvis, tarsis piceis, alis limpidis. 



Body hoary: head yellowish white, thickly clothed heneath 

 with white hairs ; a narrow piceous spot "between the eyes, which are 

 also piceous : feelers ferruginous : mouth tawny ; sucker black : 

 chest with five indistinct yellowish white stripes : abdomen piceous 

 above, tawny beneath, covered with a hoary bloom, and clothed 

 with pale yellow hairs, especially on the tawny hind borders of the 

 segments : legs tawny ; hips and thighs hoary ; fore feet and tips of 

 four hinder feet piceous : wings colourless ; wing-ribs and veins 

 tawny, the latter piceous towards the tips ; poisers tawny. Length 

 of the body 7 lines ; of the wings 12 lines. 



1 Tabanus decisus, n. s., fem. Canus, capite lateribusque fulvis, ab- 

 domine pedibusque ferrugineis, tarsis piceis, alis limpidis. 



Body hoary : head pale tawny : eyes black, with a small black 

 i spot between them : feelers ferruginous, with black tips : mouth 

 tawny, piceous towards the tip : chest and breast with a yellow 

 tinge ; sides yellow : abdomen and legs pale ferruginous ; feet pi- 

 ceous : wings colourless, ferruginous along the fore borders for more 

 1 than two-thirds of their length ; wing-ribs ferruginous ; veins pi- 

 ceous, ferruginous towards the base of the wing; poisers yellow. 

 Length of the body 5 lines ; of the wings 10 lines. 



a. Ukraine. Presented by Dr. Dowler. 



i 



; Tabanus fulvescens, n. s., mas. Fuscus, capite flavo-albido, thorace 

 fusco, pectore cano, abdomine fulvo, fusco nonnunquam vittato, 

 pedibus Jlavis, alis limpidis. 



Head yellowish white, clothed beneath with white hairs : feelers 

 I and palpi yellow : eyes red : chest pale brown, clothed with tawny 

 ! hairs : breast hoary, clothed with white hairs : abdomen tawny, 

 j slightly clothed with tawny hairs, and having a broad grayish brown 

 I stripe, which appears only at the base on the under-side : legs yel- 

 i low : wings colourless ; wing-ribs and veins tawny, the latter piceous 

 I towards the tips; poisers yellow. Length of the body 4J- lines; of 

 i the wings 9 lines. 



a. Massachusetts. From Prof. Sheppard's collection. 



b. ? 



Var. Abdomen not striped. 



Q 2 



