22G Miss S. L. M. Summers on Blood-suchiny 



Abdomen reddish brown ; distal segments darker, witli 

 scattered hairs, of whicli many are black and a few golden. 



This species can be readily distinguished from T. elesteem 

 by the parallel-sided and much narrower front, by the shape 

 of the frontal callus, by tlie very much longer palps, and by 

 the nearly uniformly coloured abdomen. 



Tabanus anellosus, sp. n. 



Small species, length 9 mm. 



Five females. 



Face grey, witli long white hairs. Palps reddish yellow, 

 slender, about two-thirds tlie lengtli of the proboscisj which 

 is black and remarkably slender. 



Antennce reddish brown, the rings of the third segment 

 black, and the basal tooth acuminate. 



Front uniformly narrow, one-ninth the breadth of the head, 

 dirty yellow; frontal callus elongate triangular, shiny black. 

 Eyes quite bare. 



Scutum and scutellum black, with grey dust and scattered 

 hairs, black and a few golden. 



Legs : femora and tarsi of all the legs black ; tibise of the 

 first pair black with red base, tibiae of the second and third 

 pairs reddish brown with black tip. 



Wings hyaline, with a long brown mark at the distal end 

 of the first longitudinal vein. Ilalteres dark brown. 



Abdomen : the first three segments of a reddish-brown 

 colour, the second having a small black median triangle ; 

 the remaining segments black. At the hinder edge of each 

 segment is a row of golden hairs, which on the black segments 

 form distinct fine cross-bands. 



Silvius mansoni, sp. n. 



Length 11'6-13 mm. 



Four females. 



Face grey, with long white or yellowish-white hairs ; palps 

 a little more than three-quarters the length of the proboscis, 

 extremely slender, reddisli brown with black abruptly truncate 

 tip ; proboscis black, long and slender. 



Antennm reddish brown, third segment broadly triangular 

 at base and then becoming very slender. 



Front wide, about one-sixth the width of head, slightly 

 convergent anteriorly, dirty yellow. Frontal callus shiny 

 black, divided into two parts — the upper elongate triangular, 

 almost racquet-shaped, prolonged to the ocelli which are very 

 distinct ; the lower a large shiny black plug. Eyes quite 

 ba,re. 



