48 INSECTS NOXIOUS TO AGBICULTURE. 



Adult female orange-red in colour,, peg-top shaped ; the- 

 abdominal segment very small as compared with the rest of the 

 body, and the two next segments overlap it. Abdomen ending 

 in two conspicuous, prominent, median lobes, and at each side 

 of ^them two semi-circular depressions : several branched and 

 serrated hairs in the region of these lobes. There are no groups 

 of spinnerets. There is no wide depression of the edge between 

 the median lobes. 



Adult male unknown. 



Habitat On Santalum cunninghamii (Maire) , Te Aute, 

 Hawke's Bay; and on pear, plum, and other fruit-trees at 

 Whangarei, having probably spread from native plants. 



The carinated male puparium distinguishes this species from 

 Aspidiotus. The absence of spinnerets is curious. 



Genus : MYTILASPIS, Targioni-Tozzetti. 



Female and male puparia similar, or nearly similar, in shape, 

 but the male puparium is smaller. Puparia elongated, generally 

 more or less mussel-shaped or pyriform, usually convex, more or 

 less curved; pellicles at one end. Male puparia not carinated. 

 Five groups of spinnerets in the female, but the groups are some- 

 times continuous. 



13. MYTILASPIS CORDYLINIDIS, Maskell. 

 N.Z. Trans., Vol. XI., 1878, p. 195. 

 (Plate V., Fig. 1.) 



Female puparium pure white, elongated, very narrow; 

 usually straight, sometimes curved ; pellicles yellow, at one end ; 

 length, about -|in. ; breadth, about ^\>in. 



Male puparium similar to that of the female, but much 

 smaller; length, about ^\yin. 



Adult female pale yellow in colour, elongated, distinctly seg- 

 mented. Rudimentary antennae on the cephalic segment. A 

 few fine hairs at the edges of the segments. Abdomen ending 

 in two lobes with a small median depression ; several serrated 

 scaly hairs, and a few spines. Five groups of spinnerets : upper- 

 most groups, seven or eight orifices ; upper lateral group, four- 

 teen to twenty ; lower lateral group, twenty to twenty-five. A 

 great number of single spinnerets. 



