from the Oriental Zoological Region. 21 



colour; tlie base of the mandibles covered with depressed 

 golden pubescence. Tliorax black ; the tubercles rufous, 

 covered with short golden pubescence ; the niesonotum 

 alutaceous; the raetanotum and the pleuraB closely and finely 

 punctured. Legs rufous, the coxai broadly black at the base. 

 Wings hyaline, with a slight fuscous tint; the apex of both 

 wings smoky, the cloud commencing near the end of the 

 radial cellule ; the first cubital cellule is half the length of 

 the second ; the first transverse cubital nervure is sharply 

 elbowed and buUated shortly below the middle, and is united 

 to the first recurrent nervure. The basal three segments of 

 the abdomen are rufous, marked with black on the apices, the 

 third more broadly than the others, the fourth is still more 

 broadly black ; the last segment is rufous, suffused with 

 black, and is strongly and closely punctured ; the pile is 

 golden. The ventral surface is similarly coloured but more 

 suffused with black. 



Comes nearest to T. Yerhuryi^ Bingham. Characteristic 

 is the interstitial first recurrent nervure, a feature which does 

 not occur in any of the other Oriental si)ecies. The apex of 

 the radial nervure too is rounded, not straight or oblique as 

 in most species; the appendicular cellule is almost obsolete, 

 the nervure being almost obliterated. 



Tachytes ceylonica, sp. n. 



Nigra, abdominis basi late rufa ; tibiis tarsisquc anticis rutia ; alls 



hyalinis, nervis testaceis. S • 

 Long. 7 mm. 



Hal). Ceylon {Rolkney). Coll. Rothney. 



Head black, the oral region rufous ; the front and face 

 densely covered with pale golden pubescence ; the front and 

 vertex aluta'ieous ; the ocellar region raised, furrowed down 

 the miildle. Mandibles rufous^ black at the apex ; the base 

 covered with silvery pubescence. The eyes at the top are 

 separated by fully the length of the third antennal joint. 

 Thorax minutely punctured, rather thickly covered with 

 silvery hair; the apex of the median segment has a steep, 

 oblique slope and is closely transversely striated; the sides 

 thickly covered with long white hair ; the furrow on the 

 upper half is wide, large, deep, and triangular at the apex. 

 Pleural closely and minutely punctured. Wings clear hyaline; 

 the costa and nervures pale testaceous ; the second recurrent 

 nervure is received shortly behind the middle ; the second 

 cubital cellule at the top is nearly double the length of the 

 first; the apex of the radial cellule is obliquely truncated ; 



