Maskell. — On Coccididae. 229 



dorsal opening in the sac ; but this opening is not, I think, 

 constant, and in no case does it reduce the sac to anything 

 like a mere cushion. The insect is practically enclosed. The 

 six hairs of the anogenital ring are abnormal, the generic 

 number being eight ; but, as I remarked in my paper of 1890 

 (vol. xxiii., p. 32), the student of Coccids must be prepared to 

 look on any character as elastic and variable. The distinctive 

 specific feature of E. turgipes is the peculiar form of the feet ; 

 and I have found in preparing a number of specimens for 

 microscopic examination that in all cases they assumed the 

 position shown in my figure — they radiate like spokes of a 

 wheel, whereas in other Coccids they are naturally bent down- 

 wards. The outline of the insect being circular, the six feet 

 are placed at equal distances, so that the anterior pair are in 

 front of the rostrum, the posterior pair very far towards the 

 anal tubercles. Perhaps, also, the very long sixth joint of the 

 larval antennie may be looked on as an exceptional character. 



Eriococcus coriaceus, sp. nov. Plate XV., figs. 1-3. 



Sac of adult female varying in colour from light-yellow or 

 buff to dark-orange or red ; form elliptical ; sometimes single, 

 sometimes aggregated in masses on a twig. Texture very 

 leathery and tough. There is a small orifice at the posterior 

 extremity. Length about ygin. 



Sac of male pupa of similar material and colours, but 

 smaller. 



Adult female dark-red, filling the sac. Antennae of seven 

 subequal joints, which in a few specimens seen appear like 

 eight. Feet normal, the tibia about half as long as the tarsus. 

 Anal tubercles moderate ; anogenital ring with eight hairs. 

 Epidermis bearing many fine short hairs and short slender 

 spines. Mentum dimerous. 



Female of the second stage not observed. 



Larva red, flattish, elliptical ; length about ^in. Form 

 normal; antennae of six joints ; anal tubercles conspicuous. 



Adult male unknown. 



Hab. In Australia, on Eucalyptus sp. Specimens from Mr. 

 Olliff, New South Wales. 



This species, in the form of its sac and in the antenna, 

 approaches E. eucalypti, Mask. ; but the sac has no glassy 

 tubes on it, and the tody of the insect has slender hairs in- 

 stead of the thick conical spines of that species. It is vivi- 

 parous, and several specimens seen were so full of lively 

 larvae that it seemed a wonder how these could find room. 



Eriococcus conspersus, sp. nov. Plate XV., figs. 4-6. 



Sac of adult female yellow, not closely felted, subglobular ; 

 diameter about o^in. 



