1 



3T) 



Maskell. — On Coccidae. 317 



Genus Eeiococcus. 

 Eriococcus simplex, sp. nov. Plate XXI., fig. 3. 



Sac of female yellow, but frequently obscured by black 

 fungus ; form elliptical; length, about i^V^-' ^^^ variable. 



Sac of male of similar form, colour white ; length, about 

 m. 



Adult female red ; elliptical, filling the sac, but shrivelling 

 at gestation. Antennee of seven joints, of which the second 

 and third are the longest. Feet normal. Anal ring with 

 eight hairs. Margin of the body bearing a row of short blunt 

 spines, which are rather slender; at the cephalic and abdo- 

 minal extremities these spines are more numerous, and in 

 groups. Epidermis bearing some circular spinnerets. 



Adult male yellowish-red ; length, about ^qVq.. Antennse 

 very short, with ten joints, of which the two first are thick 

 and subglobular, the next three more slender, the sixth to the 

 ninth widening consecutively, the tenth short and subconical ; 

 all the joints are hairy. The armature of the penis is very 

 large, projecting considerably beyond the terminal abdominal 

 tubercles, and produced into strong spines of considerable 

 length. 



Larva yellowish-red ; form normal ; length, about ^Vin. 

 Antennae of six joints. Margin bearing small conical spines, 

 and there is a double median dorsal longitudinal row of similar 

 spines. Anal tubercles normal. 



Hah. In Australia, on Eucalyptus, sp. My specimens 

 were sent by Mr. Froggatt. 



The adult female is not far removed from E. sjnniger, 

 Mask., 1895, but differs in the antenna, in the more slender 

 spines, and in their arrangement in terminal groups. The 

 larva, however, differs considerably in being much less spiny. 

 As regards the male generative organ, I have not seen any- 

 thing quite like it before in the genus, although I find that 

 something analogous exists in E, clanthonics, Mask.; and the 

 antenna also is not quite normal. 



Eriococcus simplex, Maskell, var. dealbata, var. nov. 



Sac of female white; form elliptical; length, about ^Qin., 

 but variable. 



Sac of male white ; length, about /^in. 



Adult female and larva similar to those of the type. Only 

 one specimen of the male observed, with the armature broken 

 off. 



Hah. In Western Austraha, on Eticalyptus, sp. Mr. Lea 

 sent me specimens, and says, " Seems to prefer the butts of 

 red-gum trees which have been cut down, and from which 

 young shoots are growing." 



