Maskell. — On Coccididas. 231 



Hab. In Australia, on Casuarina suberosa. Specimens 

 sent by Mr. Lidgett. 



This is another species allied to B. grandis ; but it appears 

 to differ from that sufficiently in the antenna, and principally 

 in the rows of very strong spines on the dorsum of the larva. 



Rhizococcus pustulatus, sp. nov. Plate XV., figs. 8, 9. 



Adult female dark-red in colour, convex, subelliptical and 

 tapering somewhat posteriorly ; the dorsum exhibits two 

 longitudinal grooves on the upper surface and two others more 

 shallow near the margins, and in these 'grooves are some 

 rather large shallow depressions or pits ; the epidermis is 

 rough with great numbers of very minute pustules. Length 

 of insect about T V n - Anal tubercles small, but conspicuous. 

 Antennae short, with six joints, of which the fourth and fifth 

 are the shortest. Feet absent. Anogenital ring with eight 

 hairs. Mentum dimerous. The dorsal pustules are very 

 noticeable after treatment with potash. 



Female of the second stage red, subelliptical, tapering 

 posteriorly, slightly convex ; length about ^jin. Antennae of 

 six joints, of which the sixth is the longest. Feet normal, the 

 tibia a little shorter than the tarsus. Anal tubercles con- 

 spicuous, with long setae. Epidermis rough with minute 

 pustules. Margin irregular, and bearing many slender spines. 



Larva yellowish-red, subelliptical, tapering ; length about 

 ^ijin. Anal tubercles moderate. Antennae of six joints. The 

 dorsal epidermis is profusely marked with very minute 

 wrinkles, and these are also seen in fewer numbers on the 

 ventral surface. The margin bears a row of small slender 

 spines. 



Male unknown. 



Sab. In Australia, on Casuarina sp. My specimens are 

 from Mr. J. Lidgett, of Myrniong, Victoria. 



At first sight this insect might be taken for B. casuarince, 

 or for a small form of B. grandis ; but it is apodous, and 

 moreover distinguishable by the dorsal corrugations, shallow 

 pits, and minute pustules. 



Subdivision DACTYLOPID^. 



Genus Dactylopius, Costa. 



Dactylopius arecae, Maskell. N.Z. Trans., vol. xxii., p. 150. 



I have received from Mr. W. W. Smith, of Ashburton, 

 specimens of this insect found amongst roots of gooseberry, 

 red-clover, grass, dock, and other plants, underground. My 

 original specimens were amongst roots of Areca sapida. It 

 would appear, therefore, that the insect is not uncommon, and 

 is not confined to any particular plant. My Ashburton speci- 



