26 Transactions. — Zoology. 



p. 145), but differs in the six-jointed antennae and the presence 

 of the marginal row of strong o«nical spines. 



Eriococcus confusus, sp. nov. Plate IV., figs. 5-8. 



Sac of adult female dirty-white or grey, aggregated in 

 rough irregular masses on the twigs of the plant ; loosely 

 felted: the normal form is globular, slightly elongated: length 

 about ij'gin. 



Sac of male not observed. 



Adult female dull brownish-yellow, subglobular, shrivelling 

 at gestation to a shapeless mass, x^ntennse of six subequal 

 joints, the fourth and fifth a little the shortest. Feet normal. 

 Epidermis bearing great numbers of simple circular spinneret- 

 orifices and many rather long slender spines, which are most 

 noticeable on the median dorsal region ; also some minute 

 spiny hairs. Anogenital ring large, compound, with eight 

 hairs. 



Larva and male not observed. 



Hah. In Australia, on bark of Eucalyptus viminalis : 

 specimens from Mr. French. 



Eriococcus hoherise, Maskell. N.Z. Trans., vol. xh., p. 298; 

 vol. xxiu., p. 20. Plate IV., figs. 9, 10. 



In my paper of last year I was unable to include a figure 

 of the apterous form of the male in this species. I give one 

 now on account of several peculiarities observable. The 

 specimen copied is one of two which emerged in May, 1890, 

 from their sacs. Both were very lively ; and, although at first 

 I thought that perhaps they might be only pupae which some- 

 how managed to escape prematurely and incomplete, yet, as 

 they lived for a couple of days and did not appear to change, 

 this notion was not tenable. It will be observed that the 

 head, thorax, and abdomen show no divisions ; that there are 

 only two eyes, which are lateral ; and that the antennal joints 

 are compressed : the whole form, indeed, seems to be inter- 

 mediate. Yet I cannot exactly consider it as equivalent to a 

 half-developed pupa. Dr. Low, in a paper on Eriococcus {Acan- 

 tliococcus) accris (Wiener Ent. Zeit., 1882), refers to an inter- 

 mediate pupal stage in that species which, he says, probably 

 answers to the " pseudonymph " of Hymcnoptera (von 

 Siebold) ; but,, as far as I can understand his expressions, 

 this stage occurs altogether within the sac, and is neither 

 active nor procreative. Had only one abnormal form ap- 

 peared, I should probably not have considered it as anything 

 but a monstrosity ; but the occurrence of two similar forms 

 nearly on the same day, and seemingly quite sufllciently apt 

 for generation (as my figure 10 shows), pointed to something 



