24G rROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxm. 



rected; second joint a little rough with scales projecting at apex, third 

 nearly as long as second, blunt, both joints silvery white, with apex 

 black. Maxillar}^ palpi white, moderate, ascending, clothed with 

 long ■ spreading black hairs, especially at tip. Face smooth, silvery 

 white. Head smooth, silvery white with fuscous scales. Thorax and 

 forewings deep bluish black with metallic reflections; a narrow silvery 

 white fascia at basal third, at middle of costa a silvery white spot and 

 nearly opposite, but a little farther outward, a dorsal one. Farther 

 out in the costal cilia is a third costal white spot. Cilia bluish black 

 with tips white. Hindwings purplish grey, cilia 4, lighter. Abdo- 

 men bluish black with silvery reflections; anal tuft silvery grey; legs 

 smooth, black with white aunulations. 



Alar expanse, 4.8 mm. 



Described from a single male in fine condition, bred March 27, 

 1900, from material collected at Palm Beach, Florida, by Dr. Dyar. 



Ty^e.— No. 4956, U.S.N.M. 



Larva mines the twigs of Guilandina honducella in the same 

 fashion iisMar)7UirasaUctel7a in willow branches. Mine is aver}' long, 

 narrow, irregular serpentine, going upward or downward very near 

 the surface just under the epidermis. Larva is very flat, much incised 

 between the segments, tapering backward; head very flat, mandibles 

 large, projected far out in front of the head. At maturity it assumes 

 a similar wine-red coloration of transverse bands as salictelhi: Cocoon 

 white, spun outside the mine. 



The species is quite near to salictella, a bred series of which is now 

 before me, but it is smaller, darker, and with the second fascia in 

 salictelhi represented by the costal and the dorsal spot. 



The venation in both species is as follows: Forewing elongate 

 ovate; 7 veins, 3 to 5 absent, 8 and 9 absent, lb simple, 6 and 7 separate, 

 one to each side of the apex. Hindwing setiform, 5 veins; 8 short, 7 

 along costa to apex, 5 and 6 from common independent stalk from 

 base, 3 and 4 absent. (See Plate I, flg. 14.) 



LITHOCOLLETIS Hubner. 

 LITHOCOLLETIS VERBESINELLA, new species. 



Antennae silvery white with black annulations, last 4 or 5 joints 

 white. Labial palpi silvery white. Face golden iridescent white; 

 tuft on head reddish yellow with a few white scales. Thorax and 

 forewing deep golden yellowish brown. At basal third is a silvery 

 white costal streak directed outward, strongly margined externally 

 with black. At the middle of the wing is a silvery white, outwardly 

 angulated fascia, and at the begiiming of costal cilia another similar 

 one, both strongly margined externally with black. Just before apex 

 is a third small silvery white fascia, with a few scattered black scales 



