450 Mr. C. Fuller on some species of 



woody excrescences and wounds which together with the white secre- 

 tion much resemble the attack of the " woolly aphis " on the apple. 

 Length 0*05 inch. Epidermis with many conspicuous and slightly- 

 protruding pores, and clothed with inconspicuous spines. Spiracles 

 conspicuous, surrounded by groups of niultiocular pores. Legs 

 absent. Rostrum large. Mentum conical, apex haired, probably 

 dimerous. Antenn?e represented by small chitinous thickenings. 

 Near the regions of the posterior spiracles are semi-circular chitinous 

 lobes, possibly atrophied legs. Anal ring unobserved. Cast skin of 

 earlier stage covering adult. 



On Casuarina. Swan River. 



81. Sphmrococcus tormentosus, sp. n. (PI. XV, fig. 18.) 



Adult 9 s usually congregating together and secreting (juantities 

 of white, woolly matter. When taken singly the tests are .sul)-globu- 

 lar with a central, longitudinal parting of the filaments. Length of 

 test 0'13 inch. Adult $ convex above, flat beneath ; brown. 

 Antennae very small, atrophied, sub-conical not jointed. Mentum 

 dimerous, short. Legs absent. Spiracles large. Epidermis with 

 many minute, multiocular pores and bearing many short, tubular 

 spinnerets. Anal tubercles absent. Setoe absent. Length 0'08 inch. 



Larva yellow, very elongate, with 2 conspicuous anal tubercles, 

 bearing spines and setre. Anal ring with 6 hairs. Antennae 6-jointed; 

 joints 4 and 5 sub-equal and shortest, 3 and 6 sub-equal and longest. 

 Tarsus longer than tibia ; claws slender ; upper and lower digitules 

 knobbed. Mentum long, conical, dimerous. Dorsum bearing trans- 

 verse rows of short conical spines. 



Adult ^ , only one observed, brownish-yellow, elongate ; abdomen 

 short, not tapering : spike short, with a dorsal curved appendage. 

 Antennae moniliform, sub-clavate ; 10-jointed ; joints 1 and 2 large 

 and wide, 2 the longer ; 3 clavate and slender ; 4, 5, 6, and 7 sub- 

 equal and globose ; 8 and 9 larger and sub-equal ; 10 sub-conical. 

 Length, including spike, 0'09 inch. 



On Melaleuca sp. Swan River, This species is close 

 to S. acacia, Mask. It differs inasmuch as the larva of 

 that species is without tubercles and the adult ^ without 

 antennas. 



32. Sphxrococcus mornsoni, sp. n, (PI. XV, fig. 22, 



22 a.) 



9 s inhabiting galls. Mature gall ob-ovate,; apex truncate, and 

 perforated. Colour light red; outer walls roughened where leaves 

 have fallen off, 9 chamber divided into two parts, the lower 



