428 Transactions. — Zoology. 



is found also in a New Zealand species, A. fagi, Maskell, 

 1889 ; bat that insect has no fringe, and the margin bears 

 twenty-four hairs. 



18. Aleurodes croceata, Maskell, sp. nov. Plate XXVTI.— 2. 



Larva light-brown, thin, flattish, elliptical ; length about 

 -g^oin. Dorsum bearing two spines on a level with the rostrum, 

 but no others, nor any hairs. Margin deeply crenulated, 

 truncate at the posterior extremity, where there are two 

 rather long setae. Fringe absent, or very fragmentary. 



Pupa-case dull-black, elliptical ; dorsum convex ; length 

 about oVii^- ; abdominal segments fairly distinct. Dorsum 

 apparently without hairs or spines. Margins deeply crenu- 

 lated, and surrounded by a mass of yellow wax, which is com- 

 posed of slender tubes so closely adjacent as to be almost 

 homogeneous ; this fringe is not flat, but has the internal 

 edge elevated, so that the pupa-case looks raised up on a 

 sloping yellow ring. Vasiform orifice small, subcorneal, with 

 a very convex anterior edge ; operculum nearly covering the 

 orifice ; lingula short, subcylindrical. 



Adult form unknown. 



Hab. In Australia, on Sti/jyJielia (Monotoca) cUijjtica. My 

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

 Sydney. 



The sloping yellow waxy ring will readily distinguish this 

 sjiecies in the pupal state. This ring is so nearly homogene- 

 ous that it looks quite glassy and solid. 



19. Aleurodes decipiens, Maskell, sp. nov. Plate XXVIII. — 1. 



Larva yellow, with often a pinkish tinge ; elongated ellip- 

 tical, the width about two-fifths of the length ; dorsum slightly 

 convex ; length about xV^- Faint indications of the future 

 pupa may be discerned. Dorsum hairless, but covered with 

 great numbers of rather conspicuous though not much elevated 

 pustules, which are larger towards the mai'gin than on the 

 median region. Margin slightly thickened, composed of ad- 

 jacent tubes whose ends form crenulations, from which spring 

 short curling cylinders of wax usually not set closely together. 

 Abdomen distinctly cleft from the vasiform orifice to the pos- 

 terior margin, where there is a short seta on each side of the 

 cleft. Vasiform orifice conical, very much elongated, the 

 anterior edge concave, sides emarginate, nearly one-half the 

 length of the cleft ; operculum subcircular ; lingula excessively 

 long, but not extending beyond the orifice, cylindrical at the 

 base, then somewhat dilated, then tapering to a point where 

 there are two rather long setae ; the dilated portion of the 

 lingula is covered with very minute dots, which may perhaps 

 be fine hairs. 



