304 Transactions. — Zoology. 



Hah. In Tasmania, on Pomaderris aj^etala. My specimens 

 were sent by Mr. H. S. Dove, who says that the insect is not 

 plentiful. 



Mytilaspis acaciae, Maskell, var. all)ida, var. nov. 



The puparia of this variety are lighter in colour than the 

 type, being greyish-white. The median abdominal lobes are 

 perhaps a little more prominent. In other characters I see 

 no important differences. 



Hab. In Western Australia, on Acacia. Specimens from 

 Mr. Lea, who says, " Usually on trunk, very seldom on twigs, 

 perhaps never on leaves." 



Mytilaspis defecta, sp. nov. Plate XIX., fig. 4. 



Puparium of female snowy- white, somewhat pyriform ; 

 pellicles yellow ; texture loose ; length, about oV^n. 



Puparium of male similar, but more slender. 



The puparia of males and females are frequently on 

 separate twigs. 



Adult female yellowish-brown, of normal elongated form ; 

 length, about ^Qin. Abdomen destitute of lobes ; the margin 

 entire ; the extreme median portion slightly produced. Five 

 groups of spinnerets : upper group with three orifices ; upper 

 laterals, 7 to 9 ; lower laterals, 9 to 11. Within the margin, 

 near the extremity, and on the margins of the anterior 

 abdominal segments there are wide but shallow tubercular 

 swellings covered with numerous large subcircular or oval 

 pores, the two tubercles near the extremity being more 

 prominent than the others. 



Hab. In Western Australia, on (?). Mr. Lea sent me 

 specimens from the Darling Eanges. 



The absence of lobes and the marginal tubercles clearly 

 distinguish this species and its variety next to be described. 



Mytilaspis defecta, var. tincta, var. nov. 



Puparium of female similar to that of the type, but slightly 

 tinged with greyish-yellow, and also perhaps with a more solid 

 texture. 



Puparium of male as in the type. 



Adult female as in the type, but the submarginal pores are 

 smaller, and the tubercles less distinct. 



Hab. In Western Australia, on Hakea, sp., the same spiky 

 plant which bears Parlatoria perpusilla. My specimens were 

 sent by Mr. Lea, from Geraldton. 



Mytilaspis crawii, Cockerell, var. canaliculata, var. nov. Plate 



XIX., figs. 5, 6. 



Puparium of female irregularly mussel-shaped, but the out- 

 line is indistinct, the whole being covered by a very thin scale 



