Maskell, — On Aleurodidse. 429 



Pupa-case not observed with certainty, but amongst several 

 larvae on the leaves sent there is one pupa which may possibly 

 belong to this species. It is yellow, elliptical, liattisb; length 

 about oV^- 'y i^i^rgin and marginal cylinders as in the larva. 

 Dorsum covered with great numbers of pustules, smaller and 

 less conspicuous than those of the larva, and bearing also six 

 short spin}^ hairs, one on each side of the rostral region, one 

 on each side of the thoracic region, and one on each side of 

 the vasiform orifice ; also eight transverse rows of minute 

 circular pores on the cephalic and thoracic regions. The 

 abdomen is distinctly cleft, and there are two short seta? at 

 the posterior extremity. But the vasiform orifice diifers from 

 that described above : it is subcircular, with a concave anterior 

 edge ; operculum rhomboidal ; lingula very short, not extend- 

 ing beyond the operculum. The rudimentary antennae and 

 feet may be made out with moderate clearness. 



Adult form unknown. 



Hah. In Australia, on Styplielia (Monotoca) ellvptica. My 

 specimens were sent by Mr. Froggatt, from Botany, near 

 Sydney, in company with A. croceata. 



The principal feature of the larva of this species is its 

 remarkable resemblance to a Coccid of the section Lecanina. 

 At first sight the abdominal cleft seems to point directly to a 

 Lecanium, and the characters of the dorsum and the margin 

 might also be Lecanid; but an examination of the very peculiar 

 vasiform orifice and its lingula shows that it is clearly Aleurodid. 

 I have thought it well to indicate by the specific name the de- 

 ceptive nature of the general appearance. If the pupa above 

 described belongs to A. dccipiens, it will be exceptional from 

 being smaller than the larva ; as for the differences m the 

 dorsal hairs and vasiform orifice, they may be unimportant. 



20. Aleurodes dubia, Hegeer. Beitrag zur Naturges. der 

 Ins., 1859, p. 14; Signoret, Ann. de la Soc. Entom. de 

 France, Dec, 1867, p. 392. 



21. Aleurodes erigerontis, Maskell, sp. nov. Plate 

 XXVIIL— 2. 



Larva not observed. 



Pupa-case pale-yellow, flatfish, elliptical ; length about 

 ■Jjin. Abdominal segments moderately distinct. The en- 

 closed pupa is brownish, and faintly discernible dorsally ; on 

 turning over the case the rudimentary feet and antennae may 

 be made out, but confusedly. Margin composed of slender 

 tubes, giving it a fluted appearance, their ends forming minute 

 crenulations ; it bears a short fringe of white, straight cylin- 

 ders of wax, which is frequently very fragmentary. Dorsum 

 hairless, but exhibiting within the margin a row all round of 



