2 Transactions. — Zooloijy. 



the male, probably unique in the family. There is also a 

 special interest in the adult form of Coelostoma assimile, and its 

 curious and not easily explicable mode of burrowing into the 

 wood of its food-plant. 



A fire in the Government Printing Office storehouse lately 

 destroyed, as I understand, nearly all the remaining copies of 

 my book on the scale-insects of New Zealand, 1887. I have 

 therefore, in dealing herein with species mentioned in this 

 paper, added a reference to the original descriptions of them 

 in volumes of the New Zealand Transactions. 



Group DIASPIDIN^. 

 Genus Aspidiotus, Bouehe. 

 Aspidiotus corokiae, sp. nov. Plate II., figs. 1-4. 



Female puparium circular, rather solid, slightly convex, 

 with the pellicles in the centre ; colour varying from yellow 

 to (less frequently) white, pellicles yellow ; diameter about 

 3^in. 



Male puparium rather more elongated than that of the 

 female, not carinated ; texture thinner ; colour whitish ; pel- 

 licle yellow, near the middle. 



Adult female yellow, of the normal peg-top shape of the 

 genus; length about /yin. Abdomen ending in two conspi- 

 cuous floriated lobes, with one snaaller lobe on each side of 

 them, and another small lobe a little distance along the mar- 

 gin ; margin numerously indented ; between the terminal lobes, 

 and as far as the single small lobes, are several fine short ser- 

 rated or forked hairs. Pygidium exhibiting no regular groups 

 of spinnerets, but there are two pairs in the region where the 

 upper laterals usually are, and a considerable number of single 

 spinnerets near the margins. In some individuals traces may 

 be detected of a lattice-work pattern above the anal orifice, 

 which last is placed near the extremity ; but this lattice-work 

 is not constant. 



Adult male unknown. 



Hab. In New Zealand, on Corokia cotojieaster, in the Eeef- 

 ton district. 



Only a few species of Asjyidiotus have been reported with- 

 out groups of spinnerets, and the present does not seem to 

 agree with any of them, as far as I know. A species, A. 2)hormii, 

 Breme, is reported by Signoret as living on Phormhim tenao:, 

 and therefore presumably a New Zealand insect ; but I have 

 not seen it : moreover, the description of it does not state 

 whether the " groups " are present or not. A. acacics, Morgan 

 (Ent. Mo. Mag., Aug., 1889), aTasmanian species, differs from 

 ours in several particulars. A. camcUice has not even the two 

 pairs of orifices noticeable in A. coroldce. 



