Maskell. — On Coccidse. 47 



Mytilaspis flava, Targioni-Tozzetti, var. hawaiiensis, var. 



nov. 



Female puparium really yellowish, but covered with a 

 greyish-white secretion which makes it look grey and like the 

 bark of the tree. Form mussel-shaped ; length about ^in. ; 

 slightly curved ; generally massed together in numbers. 



Male puparium similar, but smaller and straighter. Length 

 about j 5 in. 



Adult female yellow, of normal elongate form, the segments 

 usually distinct. Abdomen ending in two large median lobes, 

 which are widely triangular, the outer edges minutely serru- 

 late. Just above them are two club-shaped organs extending 

 a little way within the body. At each side of the lobes are a 

 few spines. Five groups of spinnerets : upper group with 

 3 orifices ; upper laterals with 6 ; lower laterals, 4 to 6. 

 The abdominal segments anterior to the pygidium seem to 

 bear no spines. 



Adult male unknown. 



Hab. In the Sandwich Islands, on "bark of trees" at 

 Kauai ; plant-names not given. My specimens are from Mr. 

 Koebele. 



I can see nothing separating this from the European species 

 (infesting Olea europcea) excepting the absence of spines from 

 the anterior abdominal segments, and as to that I am not 

 entirely positive. The club-shaped organs mentioned resemble 

 those of Chionaspis biclavis, Coinstock. 



Mytilaspis striata, sp. nov. Plate I., figs. 11, 12. 



Female puparium elongated, mussel-shaped, rather con- 

 vex ; length, about f^gin. The secreted portion exhibits many 

 transverse bands of silvery-white colour, separated by narrower 

 bands of dark-grey. Pellicles orange. 



Male puparium of similar form, and with similar bands, 

 not carinated. Length, about ^yin. 



Adult female orange-colomed, darkening with age to 

 brown. Form normal of the genus; the segments not promi- 

 nent, but exhibiting faint striations which seem to correspond 

 with those of the puparium. Abdomen ending in a semi- 

 circular curve broken by small serrations, with four sharply- 

 pointed small triangular lobes rather widely separated. No 

 groups of spinnerets ; but a row of oval pores runs round the 

 margin of the abdominal and thoracic regions, and on the 

 abdominal dorsum there are a number of small circular single 

 spinnerets. 



Adult male unknown. 



Hab. In Australia, on Casuarina sp. (very slender twigs). 

 Mr. Froggatt sent me specimens from Sydney. 



This species, in the absence of spinneret-groups, ap- 



