West Australian Coocidse. 443 



14. Olliffi,a evxalyjiti, sp. n. (Plate XV, fig. 10.) 



Adult 5 stationary, hidden beneath bark scales and covered 

 completely with funiagine ; slightly elongate. Abdomen a little 

 prolonged and ending in two stout, blunt, spined tubercles, without 

 setae. Anal ring situated between the bases of the tubercles, and 

 bearing 6 stout hairs, the dorsal arc is prolonged in the form of a 

 chitinous, conical point. Antennae small atrophied, tapering, apex 

 haired, apparently 7-jointed. Rostrum large ; mentum 3-jointed. 

 Spiracles conspicuous. Legs absent, the last pair represented by 

 inconspicuous thickenings of tlie epidermis. Epidermis with 

 scattered, compound spinnerets. Length 0*04 inch. 



On Eucalyptus sii. From ten prepared specimens. 



Genus Rhizococcus, Signoret. 



15. Rhizococcus tri'partitus, sp. n. (Plate XV, figs. 11, 

 lift, l\h.) 



Adult $ naked, at first of an obscure green (olive), becoming light 

 brown or buff-coloured with maturity ; there are 3 median, parallel, 

 longitudinal markings of dark brown. Dorsum punctate, spined and 

 divided into 3 well-defined regions by two transverse ridges, the 

 median region is rectangular, the terminals triangular. Body 

 elongate, wedge-shaped, tapering and prehensile at both ends. 

 Antennae 7-jointed, often joints 6 and 7 are fused and appear as one. 

 3 is the longest joint and equal in length to all the more apical ones, 

 1 and 2 are subequal in length, but 1 is the wider. Abdomen with a 

 slight cleft, tubercles small triangular and Lecanid-like. Anal ring 

 with 8 hairs. Viviparous. Length 0'2 — 0'25 inch. 



Larva elongate, segmented ; with very distinct anal tubercles which 

 are spined and bear long setae. Margin of body fringed with spines 

 of which there are also 4 longitudinal and more conspicuous rows on 

 the dorsum. Antennae 6-jointed. Tarsus longer than tibia. 



On Casuarina. Like R. castcariniB, Maskell, this species 

 affects the axils of the branch and branchlets. It is 

 generally found in company with Fiorinia casuarina, 

 Mask. 



ScHRADERi^, Fuller. 



The term Schraderise was proposed for a section of the 

 CocciniB to include the genus Apiomorpha. This genus has 

 until recently been known by Schrader's name Brachyscelis, 

 which, though well known to have been previously 

 occupied, has been left undisturbed by the more recent 



