80 SCIENCE BULLETIN, No. 18. 



Erwcoccxs elefjav,^, Fuller. 



Journal West Australian Bureau of Agriculture, vol. iv, p. 1345. 1897. 

 Trans. Ent. Soc, London, p. 440, pi. xv, fig. 4. 1899. 



This sj)ecies is found on the axils of the l)ranchlets of a she-oak {Casuarina 

 humilis) from near Perth, Weste:n Australia. 



The adult female does not mak(^ a true sac, but is covered with a number 

 of fine cottony filaments in three distinct rows of well-defined curling pyra- 

 midal tufts, and are completely covered as they rest in the axils of the twigs. 



Adult female reddish brown, convex, elongate, showing segmental divisions. 

 Length, 0-1 inch. Antenna" rather long, coniposed of six joints. Legs, 

 ample ; tarsus, longer than tibia, upper digitules long. Anal ring with 

 eight hairs. Anal tubercles conical with spines and long seta'. Dorsum 

 densely clothed with short conical s])ines and many protruding spinnerets. 

 Fuller says : " This species is clearly an Eriococcns, but the dorsal covering, 

 could never be regarded as a sac." 



306. Eriococcns elegans. Cat. Coccida?, p. 74. 



Eriococcus eiicalyjHi, Maskell (Fig. 59). 



Trans. X. Zealand Institute, vol. xxiv, p. 27. 1891. 



Koebele, Bull. 21, Div. Ent. Dep. Agr., Washington, U.S.A., p. 14. 1890. 



Froggatt, Agric. Gazette, X. S. Wales, vol. xi, p. 103. 1900. 



A common species in South Australia and Victoria upon the foliage and 

 twigs of the Native Blackthorn (Busaria spinosa) but also recorded upon 

 Pittosporuni undatvw, Myoporum, h\). and Aster (Victoria. C. French, jun.). 



Though the type was also recorded upon the foliage of Eucalyptus diver- 

 sicolor from South Australia, I very much doubt if E. eucalypti is ever 

 found upon any species of eucalyptus. 



The sac of the adult fenude yellowisii brown or buff, thickly clothed with 

 fine white or silvery downy hairs (Maskell calls them " tubes "), so that they 

 have a distinctly roughened appearance, over the closely felted sac. Convex, 

 elliptical, sometimes narrowed towards the apex. Length i'^ of an inch. 

 Anal apeiture distinct. Male sac of similar structure, more elongated, with 

 the anal end open. Length about --.ro of an inch. 



Adult female dark purple to reddish, filling the rounded cavity until after 

 egg-laying. Anteniue composed of seven joints, of which the second and 

 third are longest. Feet normal, tibia shorter than tarsus; digitules long 

 hairs. Anal tubercules stout, each bearing on inner side two long seta^. 

 Anal ring with eight hairs. Epidermis very thickly covered with short 

 angular semi-trans])arent thorn-like spines, hiding nearly the whole of the 

 dorsal surface. Maskell says, " also many small circular spinnerets with 

 slender circular tubes," but in my old material examined, the latter were 

 almost hidden by the multitudes of short spines. 



