396 Transactions. — Zoology. 



teunjB of eight subequal joints ; the third is sometimes rather 

 longer than the others; on the last joint are several hairs, and 

 there is one on the seventh. Feet entirely absent. Eostrum 

 moderate ; mentum monomerous. Abdomen ending with two 

 divergent, rather large, anal tubercles, eacli bearing a shortish 

 seta but no spines ; close alongside each tubercle is a longer 

 seta ; each tubercle has its dorsal surface striated with a reti- 

 cular pattern. The margin of the body has two small depres- 

 sions at each side opposite the thoracic spiracles, and in each 

 depression are two club-shaped spines, one of which is twice 

 as long as the other. Epidermis bearing great numbers of 

 dorsal tubular spinnerets, the bases of which spring from very 

 minute figure-of-eight orifices. Anal ring with several (pro- 

 bably ten) hairs, and anterior to it are two rows of large 

 circular multilocular glands (perforated discs). 



Second stage of female not observed with certainty. 



Larva dark-brown, but externally appearing greyish, being 

 covered with whitish granular wax. Form elliptical, tapering 

 posteriorly to two prominent but rather small tubercles. 

 Length at first about -^-^hi., but later attaining /oin. An- 

 tennae apparently of six subequal joints. Feet moderately 

 strong. The anal tubercles are striated as in the adult, and 

 bear moderate setae. 



Male pupa and adult male unknown. 



Hab. In Australia, on Athcrosjjerma moscliata (sassafras). 

 My specimens were sent by Mr. French, from Black Spur, 

 Fernshaw, Victoria. He says, " covers the bark of the tree for 

 yards up, but does not seem to have done any damage." 



This species is much nearer to P. dendrohii, Douglas, than 

 either of the other two Austrahan species, P. eucalypti and 

 P. acacice ; snid, indeed, I am strong"ly tempted to consider 

 it as a variety only. It differs from Douglas's insect, which 

 is on orchids in Demerara, in the colour of the test, in the 

 absence of spines and the reticulation of the anal tubercles, 

 and in the absence of any " perforated discs " on the cephalic 

 region. It is a pretty insect, and for the present I shall leave 

 it as distinct. 



Genus Planchonia. 



Planchonia quercicola, Bouche. Asterolecanitcm quercicola, 



Bouche, Ent. Zeit, Stettin, 1851 ; Asterolecanium quercicola, 



Signoret, Ann. de la Soc. Ent. de France, 1868, p. 279. 



In February, 1895, I received from Mr. E. I. Kingsley, of 



Nelson, some twigs of oak from that plac3 thickly covered 



with many thousands of Coccids, clearly belonging to the 



genus Planchonia; and on examination they were found to 



be entirely identical with specimens of P. quercicola sent to 



me in 1881 by Dr. Signoret, from France. I do not propose 



