Maskell. — On New Zealand Coccidae. 219 



thin, and vanishes in balsam. The fringe, as shown in fig. 5, has rather 

 wider and shallower segments than in C. perforatus, and I have not seen 

 any of the peculiar markings, or pits, characterizing that species. The 

 body is very thin in this stage. Length about -Jjy inch. 



Adult female (fig. 6) circular, convex above, flat beneath ; colour gener- 

 ally greenish, but under the central divisions of the test deep purple, 

 covered with a white, glassy or waxy, test of some consistence, which 

 extends a little beyond the edge in an irregular fringe ; but the fringe is 

 often broken or absent, leaving the edge a continuous circle as in fig. 6. 

 The test is regularly tessellated, the tessellations corresponding to those of 

 the body : a row of pretty regular hexagons, the largest being in the centre, 

 runs along the middle, having on each side another row of hexagons some- 

 what wider, and beyond that a third row of hexagons : a fourth row, of 

 which the outer angles are cut off by the edge, completes the circle. The 

 middle row and the row on each side of it cover the purple patches of the 

 body. Under each of the hexagons, between these and the outermost row, 

 is a small swelling, or tubercle : if the insect be macerated in potash and 

 rendered transparent, these tubercles are seen placed in a ring round the 

 whole body about half way between the centre and the edge. I have failed 

 to make out what is their function : under certain lights they have some 

 slight resemblance to spiracles, but they are much too large, and moreover 

 the Lecanidse have but four spiracles, whereas there are twenty-four of 

 these tubercles. 



The insect fills the whole test, and in its last stage is slightly hollow 

 underneath : the young, as in Lecanium depressum, are to be found in the 

 cavity thus formed. The antenns (fig. 7) of the adult have seven joints, 

 the third joint being the longest. The second, third, fom-th, and fifth joints 

 have each one hair, the seventh several hairs. Feet (fig. 8) normal of the 

 genus : the lower digitules rather broad. 



The average diameter of the adult insect is about ^-^ inch. 



Not uncommon in the North Island on Pipe?- excelsum : sometimes on 

 other trees. I have not found it in the South. 



The almost regularly circular form and the colour, green with purple 



patches, of this species readily distinguish it from others of the genus. It 



forms a handsome opaque object for the microscope. 



2nd Genus, Inglisia, mihi. 



(Trans., vol. xi., p. 213.) 



1. Inglisia patella, mihi. 



(Trans., vol. xi., p. 213). 



I have succeeded lately in procuring both the young insect and the adult 

 male of this species. 



