Mr. R. S. Bagnall on new Tltysanoptera. 255 



median length of the pronotum ; surface weakly and irregu- 

 larly transverse-striate, and sparsely setose ; a postero- 

 marginal pair, one on each side of the mid-line, a little longer 

 and stouter than the other minor setse. Pterothorax sub- 

 quadrate. Spines at apex of hind tibia? within stout. Wings 

 reaching to about the seventh abdominal segment, fore-wings 

 about thirteen times as long as broad near middle ; fore-vein 

 with three spines near juncture with lower vein, and 1 + 1 + 1 

 in the distal third ; costa and lower vein with a series of 23 

 and 13 or 14 spines respectively. 



Abdomen oblong-ovate ; apical bristles moderately long 

 and slender ; posterior margin of tergite 8 with a very jagged, 

 sparse, and irregularly set fringe of short microscopical setae. 



Type. British Museum of Natural History (Imperial 

 Bureau of Entomology). 



Hab. AFRICA, Uganda, Kampala ; 1 $ in flowers of tree- 

 tomato (Solatium sp.), Nov. 11th, 1917. I. B. E. no. 127 

 (C. C. Gowthj). 



Family Thripidae, s. 1. 

 Genus Dinurothrips,, Hood. 



Table of Species. 



1. Size c. 1*5 mm. Species brachypterous. Legs 



brown, tibiae at most shaded to a yellowish- 

 brown distally ; basal antennal joint yel- 

 lowish, second dark grey-brown. Hab. South 

 Africa I), vezenyii, sp. n. 



Size 115 or 1*7 mm. Species winged 2. 



2. Size 1'7 mm. Femora brown, tibia? yellow ; 



basal antennal joints as in D. vezenyii, Bagn. 

 Fore- wings (excepting basal fifth) wholly 

 brown. Eyes more prominent and cheeks 

 more swollen. Hab. Porto Rico 1). hookeri, Hood. 



Size 1'15 mm. Legs mostly yellow ; basal 

 antennal joint yellow. Fore-wings coloured 

 otherwise, with the veins in the third sixth 

 (or more) and the fifth sixth dark brown. 

 Eyes smaller, less prominent, and cheeks 

 very slightly arched. Hab. Australia .... I). frontalis (Bagn.). 



Dinurothrips frontalis (Bagn.) . 



My Heliothrips frontalis from Australia is referable to the 

 genus Dinurothrips, Hood. The head and the wings are 

 typical of that genus, but the end of the abdomen is nearer 

 the true iTelioihrips form, and it is evident that Dinurothrips 



19* 



