Maskell. — On Aleurodidae. 433 



Vasiform orifice twice as broad as long, anterior edge concave, 

 posterior edge nearly straight, sides rounded ; operculum 

 short, broad, subelliptical ; lingula obsolete. 



Adult form unknown. 



Hub. In Jamaica, on Lignum vitm, in company with A. 

 steUata (described below), which is frequently seen entangled 

 in the flocculent mass of A. floccosa. My specimens were sent 

 by Mr. Cockerell. 



The dorsal spines (differing in the larva and the pupa) will 

 distinguish this species. Perhaps, when the adult is known, 

 the insect may be found to be an Aleurodicus, in which genus 

 A. anoncB, Morgan, and A. cocois, Curtis (also West Indian 

 species), produce masses of flocculent matter. Clearly, how- 

 ever, the organs which I have described separate A. floccosa 

 from these two ; and I find no mention anywhere of the carry- 

 ing in them of the larval exuviae on the pupal dorsum, surely an 

 important character. 



27. Aleurodes fodiens, Maskell, sp. nov. Plate XXX. — 2. 



Larva dull - yellow, flat, elliptical ; length about -V^^- 

 Dorsum faintly striated transversely. Margin very minutely 

 crenulated, and bearing no fringe or hairs. 



Pupa-case dull - yellow, flat, almost circular ; diameter 

 about gLin. Enclosed pupa clearly discernible, of a darker 

 colour than the case ; abdominal segments distinct. The 

 case is marked with radiating striae, but there are no tubercles, 

 hairs, or pores, nor any radiating patches. Margin slightly 

 thickened, almost entire ; no marginal hairs or fringe. Vasi- 

 form orifice subconical, anterior edge slightly concave, sides 

 rounded, apex a little produced ; operculum subtrapezoidal, 

 covering about half the orifice ; lingula very short, not extend- 

 ing beyond the operculum, frequently obsolete. On turning 

 over the case the rudimentary feet and antennae are clearly 

 visible : in a late stage the eyes also become very distiiact. 

 The pupse excavate rather deep pits in the surface of the leaf, 

 on the under-side, just large enough to hold the case; on the 

 upper side of the leaf there is a corresponding elevation. 



Adult form unknown. 



Hab. In New Zealand, on Drimys axillaris. My speci- 

 mens \vere sent by Mr. R. Eaithby, from Reefton. 



The formation of pits in the leaf is characteristic of this 

 species. In this proceeding it resembles the Coccid insect, 

 Bhizococcus fossor, Maskell, 1883, which acts in a similar 

 manner on Santaliim cunning haruii ; and the Aleurodes may 

 very easily be mistaken at first sight for a Coccid. I have no 

 idea of the manner in which this excavation is performed, or 

 of the organs which may be employed in it. I have remarked 

 on this point frequently in my papers on Coccida when refer- 

 23 



