132 Transactions. — Zoology. 



appearance of teeth, the segments being triangular and set somewhat 

 closely together. It attains sometimes a length of nearly $ inch, a breadth 

 of i inch, and a height of ^ inch, being thus rather a large species. The 

 inside of the test is whitish. 



, The adult female fills the test, and shrivels after gestation into a conical 

 mass, requiring maceration or boiling in potash in order to make out the 

 organs. The antennae (fig. 29) are not long. I cannot say exactly whether 

 there are six or seven joints (I have figured seven), as they are much con- 

 fused : on the last joint are several longish hairs. The foot (fig. 30) shows 

 the tibia broadening to its extremity, with two hairs at the tip : the upper 

 digitules are stronger and thicker than usual, and the lower pair end in 

 conspicuously broad plates. On the edge of the body is a row of small 

 conical spines, as in the last species. Colour of the insect 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. 



I have not seen the male ; but its test appears to be narrow, white, and 

 glassy. 



From Brachyglottis repanda, in the " Dry Bush," near Christchurch. 



The black colour both of the test and the female, its large size, and the 

 digitules of the foot, sufficiently distinguish this species. Much of the 

 blackness of Coccids is due to the presence of fungoid growths which always 

 accompany them (I suppose, Fumago) ; but in this case the colour is that of 

 the insect. 



4. Ctenochiton depressus, sp. nov. 

 Figs. 31, 32. 



Test of female flat, nearly circular, thin, waxy, greyish- coloured : the 

 fringe is inconspicuous or absent in the latest stage, but normal at earlier 

 periods. Diameter about \ inch. There are no rows of air-cells, or per- 

 forations, in the test. 



Adult female filling the test and as usual shrivelling after gestation : 

 colour brownish or grey. Antennae (fig. 31) of six joints, the third being 

 the longest and, as is commonly the case, often appearing like two. On the 

 last joint a few long hairs. Foot normal : the upper digitules are fine hairs, 

 the lower pair only a little broader. Anal ring and lobes normal. 



In the second stage the usual wavy edge is conspicuous : the test is 

 thin, glassy, with normal fringe. Antennae and feet normal. The insect 

 is somewhat thick, with yellowish colour. 



Young insect normal. 



