286 AUSTRALIAN PSYLLID.E, 



V. Subfamily PRIONOCNEMINiE, Scott. 



Head small, crown measured down the centre more or less than 

 one-half the width between eyes. Face lobes short (wanting ?); 

 antennae long, slender. Eyes large. Thorax: pronotum narrow, 

 broadest in middle, as long as outer edge of eyes; mesonotum 

 convex, widest at insertion of elytra. Wings elongate, more or 

 less acute at apex, with a stigma (?); cubitus petiole short, dorsal 

 margin with two or four nervelets. Legs : tibise of 3rd pair with 

 stout, curved, ani^ular tooth at base, apex dilated, with a more 

 or less serrate margin. 



Genus i. — Carsidara, Walk.l Journ. Linn. Soc. Zool., Vol. x., 

 ,, ii.— Tyora ,, J pp. 329-330. 



In the two following species I have found so many affinities to 

 the genus Tyora that I refrain from forming a new genus for 

 their reception, and so I have placed them in this. Walker 

 formed the genus on one specimen (minus the head) from Mysol; 

 but in Scott's definition of the genus he says "head wanting," 

 though in that of the subfamily containing the two genera he 

 says " face lobes short, antennae long, slender, eyes large." 

 Walker, however, in his description, says " antennae graciles, 

 filiformes," but he does not note anything about the face lobes. 

 Walker does not say whether there is a stigma in the forewing; 

 and though Scott figures the wing of this species, with the 

 remarkable cross nervure and no stigma exactly as 1113" species, he 

 says " stigma joined to radial by a transverse nerve." 



Genus Tyora, Walker. 



" Body slender, antennte slender, filiform, much longer than 

 the thorax; 1st and 2nd joints incrassated. Legs stout, rather 

 short. Fore wings narrow, with three longitudinal veins, which 

 are connected near the base; first vein emitting an oblique vein, 

 and an exterior short directly transverse vein to the costa; second 

 vein emitting three oblique veins to the hind border (of these 

 secondary veins the first and second are connected by a transverse 

 vein, third vein extending obliquely to the hind border)." 



Type Tyora congrua, Walker. 



