Maskell. — On Aleurodidae. 425 



Hab. Ill India, on SaccJiaruvi officinale. My specimens 

 were sent by Mr. Cotes, late of the Indian Museum, Calcutta, 

 from Baroda. He informed me they were rather damaging to 

 the sugar-cane in those parts. 



The very elongated form is distinctive, besides the black 

 colour. 



9. Aleurodes bergii, Siguoret. Ann. de la Soc. Entom. de 

 France, Dec, 1867, p. 395. 



10. Aleurodes brassicse, Walker. Catal. of Homopt. in Brit. 

 Mus., p. 1092; Koch, Pflanzenlause, p. 326; Frauenfeld, 

 Yerh. Zool.-Bot.-Gesellsch, Wien, 1867, p. 794; Douglas, 

 Ent. Mo. Mag., 1895, vol. xxxi., pp. 68, 97. 



11. Aleurodes caprese, Signoret. Ann. de la Soc. Entom. 

 de Trance, Dec, 1867, p. 384. 



12. Aleurodes carpini, Koch. Die Pflanzenliiuse, Aphiden, 

 1857, p. 395 ; Signoret, Ann. de la Soc. Entom. de France, 

 Dec, 1867, p. 382; Douglas, Ent. Mo. Mag., 1895, vol. 

 xxxi., p. 117. 



13. Aleurodes cerata, Maskell, sp. nov. Plate XXVI. — 1. 

 Larva yellow, flattish, elliptical, with a slight constriction 



near the posterior extremity; length about ^V^^- Dorsum 

 hairless, but there are some scattered, extremely minute 

 simple circular pores which produce a small quantity of white 

 meal, and this sometimes rises into small lumps of felted 

 threads. Margin thickened, formed of closely adjacent cylin- 

 drical tubes, the ends of which form minute crenulations, from 

 which springs a fringe of moderately long white wax. Vasi- 

 form orifice subconical, with concave anterior edge and emar- 

 ginate sides ; operculum regularly subelliptical ; lingula not 

 quite reaching the end of the orifice. 



Pupa-case orange-yellow ; outline as in the larva, but 

 rather more convex ; length about ^^^in. Dorsum hairless, 

 but bearing many small simple circular pores, not set closely 

 together : from these pores is produced a quantity of white 

 w'ax much more plentiful and solid than in the larva ; some- 

 times it forms only a thick, nearly homogeneous shell cover- 

 ing the insect ; in other cases it is produced in several curling 

 and irregular more or less cylindrical processes ; in others 

 again several pupae are covered by one agglomerated mass. 

 Margin as in the larva, and bearing a similar wdiite fringe, 

 amongst the tubes of which are some slender threads longer 

 than the fringe. On turning over the pupa-case the rudi- 

 mentary organs are clearly visible. 



Adult form unknown. 



