Maskell. — On Coccidie. 383 



Genus Aspidiotus. 



Aspidiotus hake®, sp. nov. Plate XVIII., figs. 1-6. 



Puparium of female circular, slightly convex ; colour 

 greyish-white ; pellicles dark-orange, central ; diameter about 

 Jgin., but rather variable. The median portion is frequently 

 rubbed off, leaving the pellicles exposed, with a ring of 

 secretion. 



Puparium of male circular, smaller and whiter than that of 

 the female ; diameter about ^^in. 



Adult female orange-yellow ; form normal of the genus, 

 the .thoracic segments overlapping the abdomen. Length 

 about J-gin. The abdomen is rather short and truncate ; the 

 margin is very minutely serratulate, but there are ho terminal 

 lobes, though in some specimens a small median club-shaped 

 organ is visible within the margin. There are no groups of 

 spinnerets, but a single row of sepai'ate circular orifices runs 

 along the margin, and a few others are scattered over the 

 body. The epidermis is very minutely striated, and thus pre- 

 sents a kind of velvety appearance. 



Female of the second stage (the second pellicle) sub- 

 elliptical, tapering posteriorly. The abdomen ends in two 

 conspicuous median lobes, which are narrow, with straight 

 parallel sides and emarginate ends ; at each side, separated 

 by a deepish depression, is a smaller lobe, bidentate and 

 sloping towards the median lobes ; at a short distance along 

 the margin is another depression, and the whole margin is 

 broken by serrations. 



The first pellicle (the latest stage of the larva) is sub- 

 elliptical, tapering posteriorly, and the abdomen terminates 

 almost as in the second stage. But in this stage the exuviae 

 of the antennae and feet are clearly visible ; moreover, close 

 alongside the rostrum are two groups of si3iuneret-tubes, each 

 group containing about thirty-five ; these tubes end in circular 

 simple orifices. 



The larva (early stage) is dark-orange or red, elliptical, 

 active ; length about xno^'^- Antennae and feet presenting no 

 special features. The abdomen ends in two median conspi- 

 cuous lobes, cylindrical and converging, the outer sides emar- 

 ginate ; between the lobes are two longish setse. Close to the 

 rostrum are the two groups of spinnerets as in the first 

 pellicle. 



The second stage, or pupa, of the male is dark-orange 

 or red, elliptical ; length about gVn. The abdomen has a 

 minutely serratulate and thickened margin, but there are no 

 lobes ; the extremity is somewhat truncate. On each abdo- 

 minal segment is a transverse row of large oval spinneret- 

 orifi^ces, which are on both the dorsal and the ventral surfaces. 



