IIESPEIUDI: THE GENUS PlIOLISORA. 1515 



almost equally raised al)ove thi; level of the eyes; eyes lar^e, full, more broadly 

 curved posteriorly than anteriorly, naked, receding from each otlier posteriorly as in 

 Thanaos. Antennae inserteil witli tlie hinder edge of the base in the middle of the 

 summit, their interior bases separated from each other liy more than one and one-half 

 times the diameter of the basal joint, the wliole antenna of about the length of the ab- 

 domen, composed of thirty-flve joints of which sixteen form the club, which is .about 

 three-fonrths tlie length of tlie stalk and curved at a little more than a right angle 

 beyond its middle; it is subtricinetral, though more nearly approaching a cylindrical 

 form tliau in Tlianaos ; it increases gradually in size to a little beyond tlie middle or the 

 most curved portion, wliere its l)reatltli is eipial to fully llie lengtli of two joints, and 

 then diminishes consider^ibly more rapidly to a bluntly ronnded tip, which on the ante- 

 penultimate joint is as broad as the stalk; the joints in the middle of the stalk are 

 fully three times as long as broad. Palpi nearly three times as long as the eye, not 

 very stout, but excepting the apical joint, which stands prominently beyond the others, 

 pretty heavily though somewhat loosely clothed with long scales and hairs, arranged 

 to some extent in a vertical plane; basal joint small, a little longer than broad, scarcely 

 protuberant at any part of the .apex ; middle joint quite slender, scarcely tumid, cylin- 

 drical, with ronntied ends, more blunt .at apex tlian at base, a little curved, the con- 

 vexity forward, nearly three times as long as broad and fully two .and one-half times 

 longer than the basal joint; the apical joint small, slender, straight, cylindrical, nearly 

 three times longer than broad, bluntly pointed at tip and half as long again as the 

 breadth of the middle joint, directed angularly forward. 



Prothoracic lobes small, strongly compressed, almost laminate; viewed from the 

 front subtriangular, rounded, the base above; upper edge strongly arched, the angles 

 rounded, the piece nearly as high as broad, the breadth about two-thirds the diameter 

 of the eye. Patagia large, resemljling those of Thanaos, the posterior lobe equal, 

 broadly rounded at the tip, the length of the whole piece equal to the distance from 

 the b.ase of one eye to the extreme centre of the other. 



Fore wings (41 : 8) triangular, less than twice as long as broad, the inner margin a 

 fourth longer than the outer ; costal margin scarcely arcuate, outer margin regularly 

 and gently arcuate ; inner margin straight ; apex of the wing roundly angulated. Costal 

 margin thickened only on the basal fourth ; costal vein terminating shortly liefore the 

 apex of the cell ; infei-ior subcostal nervule and the two outer superior costal nervules 

 originating at equal distances apart and twice as near as the distance from the 

 origin of the tliird to that of the second ; this last is slightly nearer the third than the 

 first, and the first originates .at three-fifths the distance from the base to the apex of the 

 cell, opposite a point midway between the origin of the first and second median ner- 

 vures; basal bent portion of the inferior subcostal nervule longer than usual and ob- 

 solete, as is also to a slight degree the subcostal nervure just before where it is bent 

 down to receive it ; vein closing the cell likewise obsolete, indicated only by the bend 

 of the nervures; first median nervule originating scarcely beyond the end of the basal 

 third of the cell ; the second a little beyond the base of the second subcostal nervule ; 

 internal nervure very brief, fine, distant from the submedian and terminating ab- 

 ruptly ; cell expanding regularly and gradually almost to the tip and about four times 

 as long as broad, and nearly two-thirds .as long as the wing. 



Hind wings rounded triangular, elong.ate in the subcostal region, considerably longer 

 than broad; costal and inner margin straight, or the former slightly arcuate; the outer 

 margin strongly arcuate, more strongly above than below, with not the slightest pro- 

 duction in the submedian region, entire. Costal and subcostal nervures running at first 

 parallel, enclosing the usual lacuna, which is very slight, the veins p.arting at a short 

 distance from the base and at no great angle either from each other or from their 

 former course; the subcostal forking at about two-fifths the distance to the margin; 

 the cross vein indicated only by the slightest possible bending of the subcostal and 

 median nervures ; the second median forking is scarcely further from the base of the 

 wing than the subcostal forking; internal vein nearly as long as the submedian and 

 with a similar arcuation. 



