248 Transactions. — Zoology. 



twig. The normal form of a test is subcircular, rather con- 

 vex ; the colour is yellowish-brown ; the diameter would 

 average about lin. if separated at full growth. The centre of 

 the dorsal portion is occupied by a small elongated narrow red 

 or purple lamina of wax transversely corrugated, and evidently 

 the remains of the test of the early second stage ; from this to 

 the margin radiate a number of narrow ridges and depressions 

 which give a corrugated appearance to the whole test ; at the 

 posterior extremity of the small central lamina there is a 

 minute orifice. When detached from the twig the underside 

 of the test is seen to be nearly solid, with a small orifice in the 

 middle, so that the insect is almost entirely enclosed. The 

 female insect is dark-red, of the normal globular form of the 

 genus prolonged posteriorly in a short subcylindrical " tail." 

 Antennae and feet absent. The usual large spine is present just 

 above the abdominal process. The lac -tubes are, as usual, 

 situated on the thoracic region ; they are prominent, sub- 

 cylindrical, and bearing groups of excretory glands. The body 

 of the insect is very inconspicuously segmented, and on each 

 margin of a segment is a group of very small subcircular 

 spinneret-orifices. 



Female of the second stage covered by a waxy test which 

 at first is elliptical and very slightly convex, but later becomes 

 subcircular, with a central small elongated and narrow corru- 

 gated lamina from which depressions radiate to the margin ; 

 these depressions are comparatively more conspicuous than in 

 the adult test, producing a more deeply corrugated appearance. 

 Usually the median region is reddish or orange-coloured, the 

 marginal corrugations whitish or yellowish ; but the difference 

 between a late second test and an early adult are not easy to 

 make out. These second-stage tests average about ^gin. in 

 diameter in the early stage. The enclosed insect is at first 

 elongated-elliptical, gradually assuming a subglobular form ; 

 colour red. I have not been able to satisfy myself as to the 

 antennae or feet ; but probably both are absent. 



I have not observed any larvae after emergence ; but in 

 some adult specimens examined there were a great number of 

 embryonic larvae ; these were red, elliptical, tapering pos- 

 teriorly, the abdomen ending in two divergent and conspicuous 

 anal tubercles, each bearing a long seta and some short hairs. 

 The antennae and feet were not sufficiently developed for 

 observation. 



Male pupa covered by a test of red or yellowish-red wax. 

 The form of tbe test is elongated-elliptical, convex above, the 

 median region moderately rough and frequently simulating 

 the form of the elliptical segmented enclosed pupa ; the margin 

 is corrugated as in the case of the female. Length of the test 

 about ^jjin. At the posterior extremity there is a flat hinged 



