lii:i2.] 



103 



Pteroxanium squamosum, iiov. spec. 

 2. Head of a pale brownish shade, frous and vertex wlien viewed in 

 certain directions (especinlly obUquely from behind) with a faint greyish- 

 white lustre, with which is mingled a trace of bluish sheen : clypeolus and 

 labrum black, clypeus only black in tlie front third or as far as the middle. 

 Antennae yellowish-brown, very slender, the scanty pubescence very lonij, 

 about three times as long as the thickness of the tlagellum. 3Iaxillary palp 

 yellowish-brown, terminal segment broadened to the apex somewhat in the 

 form of an axe. Frons and vertex with scattered brown spots, which are 

 denser at the hind margin of the frons and the margins of the eyes : clothed 

 with long, bristly, upstanding, moderately dense, brass-yellow hairs. Thorax 



3 4 5 6 



Pteroxanium squamosum, $: 1, terminal segment and claws of hind tarsus; 

 2, venation of front wing, X 48 ; 3, scale from front wing ; 4, intermediate 

 between scale and ordinary hair of wing'; 5, ordinary hair of wing; 6, one 

 of the erect perpendicular bristles from the wing ; 3-6, all equally magnified. 



and abdomen light brownish-yellow : abdomen above somewhat flattened and 

 set with scales, with not very sharply defined blackish markings, especially 

 near the lateral margins. Femora dark brown, light brownish-yellow at the 

 extreme apex. Tibiae dark brown, the following parts light brownish-yellow ; 

 in the front leg, the 4th and 7th sevenths; middle leg, 3rd and 6tli sixths; 

 hind leg, 3rd, 4th, and 7th sevenths ; the tibiae bear numerou,-^, very long, 

 upstanding bri>tle3. Tarsi light brownish-yellow, first quarter of the meta- 

 tarsus infuscated. Wing-membrane hyaline, veins very pale, completely 

 covered with scales, hairs and bristles : hairs and scales dense, shining liglit 

 brass-yellow*, on the 4th fifth and the 10th tenth of th e wing blackish-brown : 



* In the two specimens retained in England, the parts which Dr. Enderlein describes as hght 

 braas-vellow appear (in bright daylight) more of a pale straw or buft : but the texture ot the scales 

 is such that their colour and reHection probably look very' different according to the nature ana 

 direction of the illumination. — H. S. 



