432 Transactions. — Zoology. 



subelliptical, broader than long ; operculum nearly fitting 

 the orifice ; lingula very short, cylindrical with a dilated end, 

 sometimes obsolete. 



Adult form unknown. 



Hab. In India, on Citrus aurantium. Mr. Cotes, late of 

 the Indian Museum, Calcutta, sent me some orange-leaves 

 from " North-west Himalayas," thickly covered with this 

 insect. 



I attach this as a variety to A. eucjenice on account of the 

 similarity in several respects, notably in the dorsal radiating 

 patches, though it differs in some others. It has none of 

 the marginal or dorsal characters of ^4. citri, Eiley and 

 Howard. 



24. Aleurodes fagi, Maskell. Trans. N.Z. Inst., 1889, vol. 

 xxii., p. 175. 



25. Aleurodes filicum, Goldi. Mittheil. Schweitz. Entom. 

 Gesellsch., 1886, p. 247; Douglas, Ent. Mo. Mag., 1891, 

 p. 44. 



26. Aleurodes floccosa, Maskell, sp. nov., Plate XXX. — 1. 



Larvse and pupae covered, either singly or in colonies, with 

 more or less of white flocculent matter. 



Larva dull -yellow, elongated elliptical; dorsum very 

 slightly convex ; length about ^^^in. The tubes of the margin 

 end in very minute crenulations, and bear a white, almost 

 always very fragmentary, waxy fringe. The dorsum bears 

 eight strong spines in pairs ; the three pairs on the cephalic, 

 thoracic, and anterior abdominal regions are rather broadly 

 lanceolate ; the pair close to the vasiform orifice are cylindri- 

 cal. The larval exuviae are found, as described below, at- 

 tached to the pupa-case. 



Pupa-case duil-yeilow, elliptical ; dorsum slightly convex ; 

 the enclosed pupa brownish, moderately distinct; length about 

 -J-g-in. to -gxi^n. ; the median region over the pupa is more con- 

 vex than the margins. Margin composed of adjacent tubes 

 forming conspicuous crenulations, which bear, besides the 

 flocculent matter, a moderately long fringe of straight white 

 waxy tubes. Dorsum bearing six long slender spines in pairs ; 

 one pair is on the thoracic region, another pair close to the 

 vasiform orifice, and a third pair near the abdominal extremity ; 

 this last pair frequently bear a pencil of white wax (as shown 

 in my figure). These spines are not lanceolate but cylindrical, 

 with tubercular bases. The larval exuviae seem to be at- 

 tached to the pupal dorsum by the two thoracic long spines, 

 and as the larval and pupal colours are the same it is easy to 

 mistake the lanceolate larval spines as belonging to the pupa. 



