94 Transactions. — Zoology. 



instance I will not define generically the male of Sphcerococcus 

 until we possess more information. 



Sphserococcus melaleucse, sp. nov. Plate VI., figs. 15-20. 



Insects covered by small globular waxy tests, which are 

 attached by one side to a twig. The tests are intensely black, 

 and are rough, with numbers of small protruding conical 

 processes, of which some are longer than others. Diameter 

 of test averaging ^V^- 



Adult female dull pinkish-red : form convex, elliptical, 

 tapering slightly posteriorly; diameter about ^^in. The 

 cephalic and thoracic segments are the widest and are smooth ; 

 the abdominal segments are narrow and are very closely 

 marked with convoluted corrugations, which give a rough ap- 

 pearance to the abdomen. Antennae very short, subcylindri- 

 cal, with five subequal joints, the last being somewhat globu- 

 lar; on the last joint are several longish hairs. Feet absent. 

 Mentum apparently dimerous ; rostral setae very long. The 

 four thoracic spiracles are rather large, and close to each one 

 there is a group of circular spinneret-orifices. Dorsal epider- 

 mis bearing some small circular spinnerets. Anal ring simple, 

 hairless. Anal tubercles absent, and there are no terminal 

 setse or hairs. 



Larva, second stage and male not observed. 



Hab. In Australia, on Melaleuca Unariifolia, Mr. Frog- 

 gatt sent me specimens from Penshurst, New South Wales. 



This appears to be quite distinct, in the roughness of the 

 small conical processes on the test and in the curiously-cor- 

 rugated segments of the abdomen. 



SphserococGUS froggatti, sp. nov. Plate VII., figs. 1-7. 



Insects inhabiting galls of a brownish- or reddish-yellow 

 colour ; these galls are apparently really somewhat cup-shaped, 

 attached by their bases to a twig, but they are very short, and 

 bear on their widest ends a number of long curling cylindrical 

 slender processes (sometimes much longer than the gall), so 

 that the general appearance is that of a reddish feathery mass, 

 which might easily at first sight be taken for a flower. The 

 galls which I have seen vary in size, some (including the pro- 

 cesses) having only a diameter of -^in., whilst others reach more 

 than -^in. The texture of the gall is woody, and in the cup- 

 like portion wrinkled and corrugated, the processes being 

 smoother. The processes seem to be more or less hollow, but 

 I cannot detect any males or any stage of the females in them. 

 The reddish colour fades away into yellow towards the end of 

 a process. 



The adult female occupies the cup-like portion of the gall. 

 Its real colour is red, but it appears bluish -grey from being 



