70 INSECTS NOXIOUS TO AGEICULTURE. 



pf its basal tubercle. Antennae of ten joints ; the first two very 

 short, the rest longer and equal. On the last joint are several 

 long hairs, of which three are knobbed. 



Habitat On Brachyglottis repanda, Panax arboreum, Lepto- 

 spermum scoparium (manuka), Elceocarpus dentatus (hinau) ; 

 Wellington. 



The species is distinguishable by the shape and colour of 

 the test and the arrangement of the spinnerets, in the adult 

 female. The tests of the second stage may sometimes be taken 

 for adult Ceroplastes rusci, Linn. ; but can be easily distinguished 

 on examination of the enclosed insect. 



35. CTENOCHITON ruscus, Maskell. 



N.Z. Trans., Vol. XVI., 1883, p. 131. 

 (Plate VII., Fig. 6.) 



Test of the adult female elliptical in outline, flat below, 

 convex above, the elevation being greater than usual; almost 

 black in colour, composed of a thin dark waxy secretion. The 

 fringe is conspicuous, and has the appearance of teeth, the 

 segments being sharply triangular and set closely together. 

 Length of test sometimes nearly Jin., breadth ^in., height -j^in. 

 Inside of the test whitish. 



Test of male glassy, white, elongated, slightly convex. 



Adult female filling the test, shrivelling at gestation. 

 Antennae short, probably seven- jointed, but the joints are con- 

 fused ; on the last joint several hairs. Foot having the tibia 

 expanded at the extremity ; upper digitules strong and thick, 

 lower pair ending in conspicuously broad plates. On the edge 

 of the body a row of conical spines. Colour almost black. 



In the second stage the female is less wavy in outline than 

 in other species of the genus, and in its later period is somewhat 

 thick, with the edges turned inwards. Feet normal ; digitules 

 fine. Antennae short and thick, with six joints, of which the 

 third and fourth are the longest ; on the last joint some long 

 hairs. The abdominal lobes are irregularly triangular. 



Young insect normal. 



Adult male unknown. 



Habitat On Brachyglottis repanda, Panax arboreum ; Port 

 Hills, Canterbury (Dry Bush). 



Distinguished by its large size, great convexity, and black 



