( 568 ) 



Genus PTEROCHAETA gen. nov. 



<?. Antennae simple, filiform, two-thirds the length of the costa; palpi ascending, 

 the third joint produced forward, aciculate ; legs with the tibiae more or less hairj. 



Neueation of Pterochacta doliertyi g, IJ. 



the hind pair quite densely covered with hair and provided with double spurs at the 

 extremity of the tibiae ; the first and second pairs of legs are likewise armed at the end 

 of the tibiae with short spurs. In the primaries vein 4 is emitted a little above the 

 lower outer angle of the cell ; vein 5 is nearer vein 4 than vein 6 ; the costal vein is 

 greatly bent downward toward the inner margin, crowding the cell into a narrow space 

 alx)ut the middle of the wing ; the precostal follows the normal line of the costal, and 

 between the costal and precostal is included a superior areole considerably larger than 

 the cell, heavily clothed on the underside with erect hair-like scales ; the precostal 

 is incrassated about the middle of the costal margin, forming a projection which is 

 bent backwards; veins 11 and 12 are emitted from a common stalk which springs 

 from the costal not far beyond the base and forms the lower margin of the superior 

 areole ; veins 6, 7, 8, and 10 spring from a common stalk which arises at the same 

 point as the stalk which supports veins 11 and 12, and follows the course of the latter 

 until it reaches the point where vein 10 is emitted; vein 9 is emitted from vein 8 

 halfway between the outer margin and the origin of vein 10. Hindwing : veins 1 

 and la bifurcate a little beyond the base ; vein 5 springs from the lower angle of the 

 cell, which is acutely produced a little above the common origin of veins 3 and 4 ; 

 the origin of vein 6 is widely distant from the origin of vein 5 ; vein 6 at its outer 

 extremity is marked by an oblong oval patch of heavy raised scales. 

 Type: Pterochaeta' dohertyi Holland. 



248. P. dohertyi sp. nov. 



cJ. Palpi black on the upperside, white on the lowerside; head, patagia, and 

 upperside of body pale purplish brown ; the underside of the body whitish ; legs 

 grey, margined externally with black ; tarsi black, ringed with white. The primaries 

 on the upperside are purplish brown, crossed about the middle b}' a broad pale band, 

 running obliquely from the costa, one-third of its length from the base, to about the 

 middle of the inner margin ; beyond this band are a number of brown spots and 

 markings, forming an irregular submarginal series ; of these spots those which are 

 just beyond the end of the cell are the largest and most distinct, two of them being 

 pupiled by paler oval centres ; at the tip of each nervule on the outer margin is 

 a small pale spot ; there are some subapical dark brown spots. The secondaries are 



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