32 Transactions. — Zoology. 



Joints, of which the sixth is much the longest and fusiform. 

 Feet normal, rather thick. Anal tubercles small, setiferous. 

 On the dorsum a number of very fine spiny hairs. 



Adult male reddish-brown : length about o\jin. Thorax 

 and abdomen rather thick. Spike short, conical. Antennae 

 of ten joints, all rather short and subequal, except the last, 

 which is twice as long as any of the rest. Wings rather thick 

 and mealy. Dorsal eyes, two; ventral eyes, two: ocelli, two. 



Male pupa purple, enclosed in loose white cottonj' secre- 

 tion. 



Hah. In Australia, on Alhizzia lophantlia : specimens 

 from Mr. French, who informs me that the insect threatens to 

 do much damage to the trees — and, indeed, the twigs sent to 

 me were thickly covered with insects in all stages. 



This is rather a striking-looking species, the contrast be- 

 tween the white cotton and the very dark-coloured insect 

 being very noticeable. It is clearly distinct. 



Dactylopius hibbertise, sp. nov. Plate VI., figs. 11-14. 



Adult female dark-purple, resting on a cushion of yellow 

 cotton, and frequently covered with a quantity of similar 

 cotton, which, how^ever, does not seem to be joined at the 

 edges to the lower cushion. The margins of the cushion are 

 often turned upwards, and exhibit transverse grooves and 

 foldings. Female subglobular, segmented : length about Yo^n. 

 Antenntc of eight (rarely seven) joints, subequal except the 

 last, which is somewhat longer than the rest, and cylindrical, 

 bearing some short hairs. Feet rather short and thick ; 

 digitules fine hairs. Anal tubercles very small and incon- 

 spicuous, each bearing a seta and several spines. Anal ring 

 with six hairs. Mentum dimerous. Margin having some 

 small spines, not set closely together. Epidermis bearing great 

 numbers of small circular spinneret-orifices, interspersed with 

 minute spiny hairs. 



Larva brown ; elliptical, active : length about -^-^vn. An- 

 tennae of six joints, the last the longest. Feet short and thick. 

 Anal tubercles very small, setiferous. A few small spines on 

 the dorsum and margin. 



Adult male unknown. 



Hah. In Australia, on Hihhcrtia linearis and Hibhcrtia 

 rirgata : specimens were sent to me early in 1890 by the late 

 Mr. Crawford. 



This insect differs from D. alhizzice in the character of the 

 cottony cushion and upper covering, and also in the form of 

 the feet and antennae of the adult female, and other minute 

 characters. It would seem that the upper cottony mass falls 

 off at gestation, leaving the insect shrivelling up in the cup 

 formed by the lower cushion. 



