22 SCIENCE BULLETIN, No. 18. 



Genus XIX. Ctenochiton, Maskell. 



Trans. N. Zealand Inst., vol. xi, j). 208. 1878. 



Cockerell, Canadian Entomologist, vol. xxxi, p. 332. 1899. 



This genus contains fifteen species described from New Zealand, Austialia,^ 

 Mexico, and Brazil. As nine are peculiar to New Zealand, and four indi- 

 genous to Australia, it is evidently representative of this region. 



Maskell says : " Test of female waxy, with a single fringe of tooth-like 

 more or less broad segments round the edge. The margin of the body in 

 the second stage of the development of the female usually presents a waxy 

 appearance, formed by a series of re-entering curves." Antennae, six or 

 seven jointed. 



" The presence of the fringe at some period of the female's development 

 distinguishes all the members of this genus from those of Ceroflasies and 

 Vinsonia." 



Ctenochiton araucarice, Green. 

 Anns, and Mag. Nat. History (7) vol. vi, p. 449, pi. xi, figs. 2-2a. 1900. 



This species was found upon the foliage of Bunya pine [Araucaria sp.) in 

 Victoria. Green placed it in this genus somewhat doubtfully, as it differs 

 from the typical members in the female having no felted or cottony covering. 



Adult female oblong, oval, strongly convex on dorsal surface, naked or 

 covered with an imperfect coating of brittle waxy plates. Colour, dark 

 chestnut. The dorsal surface very rugose, with a well-defined median ridge. 

 Antennae, eigbt-jointed ; legs stout; anal scales usually widely divergent; 

 anal ring with six stout hairs margined with stout spines. Length, 5 mm. 

 Breadth, 3-3| mm. 



794. Ctenochiton araucarice. Cat. Coccidse, p. 159. 



Ctenochiton cdlvlosus, Cockerell. 

 Victorian Naturalist, vol. xvi, p. 88. 1899. 



Type specimens of this species f oimd upon the foliage of a ti-tree {Melaleuca 

 nodosa) at Myrniong, Victoria. 



Adult female reddish brown, with a margin of short spines ; mouth parts 

 small ; antennae slender, composed of eight segments ; anal ring with six 

 bristles. 



Puparium white, waxy, with yellowish tint, regularly rounded, without 

 keels, convex, rugose, dotted all over with large air cells, without any tiue 

 fringe. Length, \ inch. 



796. Ctenochiton cellulosus. Cat. Coccidse, p. 159. 



