ORTALIDiE — PTEROCALLA. 133 



1. P. Stl'igula n. sp. %.— (Tab. VIII, f. 30.) Albido-pollinosa, 

 punctis inaculisque deformibus fusco-nigris aspersa ; alae fusco-nigrae, 

 disco dilutius fusco, punctis maculisque fusco-iiigris variegato, margi- 

 nibus antico inacularuni hyalinarum serie, postico limbo latiusculo 

 hyaliuo ornatis, venis longitudinalibus non undulatis. 



Clothed with white pollen, marked with brownish-black dots and irregular 

 spots ; wings brownish-black, of a paler brown upon their middle, and 

 with brownish-black spots and dots ; the anterior margin with a row of 

 hyaline spots and the posterior margin with a rather broad hyaline 

 border; longitudinal veins not undulated. Long. corp. 0.12—0.13 

 Long. al. 0.17—0.18. 



In the structure of the head and of its parts, the coloring and 

 picture of the whole body, this species resembles Myennis vau very 

 much, but it differs considerably in the narrow wings with almost 

 parallel sides, with a different venation and a different picture. 

 The ground color of the body is an opaque brownish-black, for 

 the most part covered with a thick white dust; the latter's surface 

 on the upper side is broken through by brownish-black dots and 

 a number of rather regularly arranged, but very irregularly shaped, 

 brownish-black spots ; the face does not show any such broken 

 through places; the upper, larger half of the pleura? shows 

 numerous brownish- black dots, which almost coalesce above into 

 a stripe; a little below the middle of the pleura? there is a 

 brownish-black longitudinal stripe and immediately below it a 

 narrower stripe, formed by a white pollen; the pectus is brownish- 

 black. Femora and tibia? brownish-black (the intermediate 

 femora in the described specimen are paler perhaps in consequence 

 of immaturity) ; all the femora have, upon their last third, a more 

 or less complete ring of white pollen ; their extreme tip, as well 

 as the basis of the tibia?, are tinged with yellowish-white; each 

 tibia shows, upon its middle, a very conspicuous white ring and 

 a very sharply limited white tip. The yellowish-white feet are 

 somewhat infnscated towards the end. Wings strikingly long 

 and narrow, of an unusually equal breadth ; very obtuse at the 

 end, like in other species of Pterocalla; the auxiliary vein is 

 remarkably short, so that the distance between its end and. the 

 end of the first longitudinal vein is remarkably large; the second 

 longitudinal vein is rather long; the third ends not far from the 

 apex of the wing, and has, like the others, a very straight and not 

 at all undulated course; the ends of the third and fourth veins 

 hardly show a vestige of convergency; the crossveins are rather 



