84 Transactions. — Zoology. 



spines and hairs of the larva, K. acacicB resembles K. vermilio, 

 and if the tubercles were less distinct, and it produced a dye, 

 I should consider it as perhaps a variety of that species. For 

 the present I leave it as distinct, mainly on account of the 

 conical pustules of the epidermis, which are entirely absent 

 from my specimens of K. vermilio, sent me in 1881 by Dr, 

 Signoret. 



Group COGGING. 



Subdivision AGANTHOGOCGINiE. 



Genus Planchonia. 



Planchonia bryoides, sp. nov. Plate V., figs. 1-9. 



Adult female covered by a test which is, for the main por- 

 tion, composed of convex, yellow, elliptical, nearly smooth and 

 homogeneous wax, on which is usually a thin layer of white 

 granular particles ; but there is a marginal fringe of triangular 

 segments, rather wide at the base, and pretty long, usually of 

 a pink or red colour, and these segments frequently also extend 

 over the dorsal region, so that the test has the appearance of 

 a small pink, or whitish, patch of moss ; there is, besides, 

 frequently a quantity of black fungus obscuring the whole. 

 The resemblance to reddish moss is often so striking that the 

 thing may easily at first sight be taken to be vegetable ; but in 

 many cases the median dorsal smooth yellow wax is visible 

 with only a marginal triangular fringe, and indeed it can 

 always be detected by close observation. There is a small 

 orifice at the posterior end of the test, and the triangular 

 segments on the dorsum seem to be always directed away 

 from it. In the earliest adult stage the test is elliptical, pro- 

 longed at the cephalic end in a more or less sharp point : the 

 leaf-like processes appear afterwards. The average length of 

 a test, including the fringe, is about xV^- 



Test of the second stage elongated, convex, elliptical, 

 orange-coloured above, flat and reddish beneath. There seems 

 to be no fringe. 



Test of male waxy, semi-cylindrical, yellow or pinkish. 

 Length about ^t^n. 



Adult female brown, pegtop- shaped, with abdomen pro- 

 longed in a very short conical "tail," which is terminated by 

 two small anal tubercles, each of which bears a long seta. 

 The anal ring, which is situated just above the tubercles, 

 seems to have six short hairs. Antenna? and feet absent. 

 Epidermis covered with great nvnnbers of double or figure-of- 

 eight spinneret orifices : these are of two distinct sizes, and I 

 do not know whether perhaps the larger may secrete the 

 triangular leaf-like processes, while the smaller form the smooth 

 dorsal wax, for the larger ones are rather more numerous near 



