230 



[October, 



^•sU 



/>/<^ 



The ^ scales .ire strongly tricarinate (fig. 1«). The adult males 

 appeared in August. 

 They are of the normal 

 Diaspid form ; body ra- 

 ther slender ; colour 

 bright orange-red. The 

 terminal joint of the 

 antenna (fig. W) bears 

 a stoutish knobbed hair 

 at its apex. The feet 

 (fig. le) have three 

 knobbed digitules only, 

 two on tarsus and one 

 on claw. 



An examination of the $ scales shows them, where not distorted 

 by overcrowding, to be almost Chionaspiform. The pellicles are on 

 the extreme edge, and the first pellicle very frequently projects beyond 

 the margin (fig. \d). In this respect (the position of the pellicles) I 

 see little difference between Diaspis rosce and Chionaspis biclavis, 

 Comstock ; nor does the form of the (J scale help us. In both genera 

 they are of the same form, viz., white and tricarinate. The same 

 peculiarity of form of the (J scale may often be noticed in Diaspis 

 Janata, Morg. & Ckll., in the early adult stage. In specimens of D. 

 rosce sent to me by Mr. Maskell from New Zealand, the pellicles are 

 in every case central and mucb darker coloured than in our English 

 examples. 



AspiDioTTJs zoNATUS, Frauenf. 



This insect is fairly common here on isolated oaks in pasture 

 land. The (J scales may be found singly or in small groups on the 

 under-surface of the leaves. The ? scales of the second stage are 

 clustered on the terminal branchlets at the base of the new year's 

 growth and sheltered by the dry bud-scales. The mature ? scales are 

 found on the older branches, but not in any quantity ; and at this 

 time of the year most of them seem to have been eaten out, possibly 

 by some Coccinellid beetle. In this stage they are extremely difiicult 

 to detect, being covered by the dark smoky deposit that settles upon 

 the bark. The whitish scars left by the fallen scales will sometimes 

 show the locality of a colony of the insects. 



The minute winged males (fig. 2) made their appearance at the 

 end of August and early part of September. Their colour, bright 

 clear yellow, with jet-black apodema, the mesothoracic plates with 



