Maskell.— 0/i Aleurodidae. 443 



waxy tubes, which are frequently as long as the breadth of 

 the pupa-case. The larval exuviae are almost always attached 

 to the pupal dorsum by the two long hairs of the latter. 

 Vasiform orifice with a concave anterior edge, the sides and 

 end broadly rounded ; operculum large, with emarginate sides, 

 almost covering the whole orifice ; lingula apparently obso- 

 lete. 



Adult form unknown. 



Hah. In Austraha, on Styphelia (Monotoca) richei. My 

 specimens were sent by Mr. C. French, from Melbourne, and 

 by Mr. Froggatt, from Sydney. 



58. Aleurodes T-signata, Maskell, sp. nov. Plate XXXV.— 2. 



Larva very dark-brown, or to the naked eye quite black ; 

 eUiptical ; dorsum convex, with a longitudinal raised ridge 

 and distinct abdominal segments; length about gV"- ^^® 

 dorsum bears twenty-four large, thick spines, with blunt 

 rounded ends — eight (in two transverse rows) on the cephalic 

 region, four on the thoracic region, and twelve (in two longi- 

 tudinal rows) on the abdomen ; between the four on the 

 thorax are four smaller ones on the median region. These 

 spines bear short curling tubes of white wax. Margin deeply 

 crenulated, and bearing a short fragmentary white fringe. 



Pupa-case intense glossy black ; elliptical ; dorsum convex, 

 with a median longitudinal ridge, which is broader and thicker 

 than that of the larva ; length about o^gin. The cephalic 

 extremity is very frequently acuminate. Dorsum bearing 

 large spines which are arranged somewhat differently from 

 those of the larva, those on the cephalic region forming a sub- 

 marginal series instead of transverse rows. There are also 

 more numerous small spinnerets — eight on the cephalic region, 

 six on the thoracic, twelve on the abdomen, and two close to 

 the vasiform orifice ; besides which, on the centre of the first 

 abdominal segment, there are two large spines. There are 

 thus forty-eight spinnerets (large and small) on the pupa, in- 

 stead of twenty-eight as in the larva. Margin, very con- 

 spicuously and deeply crenulated, and bearing a fringe of 

 white waxy tubes, usually of some length, but the fringe is 

 often fragmentary and sometimes quite broken off. Vasiform 

 orifice small, subsemicircular ; operculum small, covering half 

 the orifice ; lingula obsolete. At the abdominal extremity 

 there are two moderately long hairs, and these hairs frequently 

 carry a pencil of white wax longer than the fringe. 



The pupa, when extracted from its case, is yellow, with 

 the divisions of the thorax and abdomen marked by darker 

 colour ; the v/ings, eyes, feet, and antennae partly developed, 

 the eyes reniform, dark-brown ; the whole is enclosed in a 

 very thin translucent membrane which lines the pupa-case. 



