32 



ROBERT NEWSTEAD. 



Ceroplastes zonatus, sp. nov. 



Female test. Broadly ovate in outline, highly convex ; marginal plates very 

 faintly indicated, but apparently without nuclear spots ; dorsal plate very large, 

 with a central nuclear spot of white wax ; cephalic margin slightly clypeate ; lateral 

 margins in very old examples with a pronounced foot-like extension from each of the 

 stigmata, from which there extends a thick white waxen appendage. In the younger 

 forms the foot-like extension is wanting, but the white waxen appendages are present 

 and always porrected. Colour creamy white, suffused with very pale brown ; dorsal 

 plate surrounded by a shaded wavy zone of dark brown and brownish black, with 

 here and there a suffused patch of dull flesh-colour. In very old examples the zone 

 of colour extends to the margins and is of a shining madder-brown to piceous colour. 

 On the removal of the outer surface of the test with chloroform, it is seen to be divided 



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Fig. 21. Ceroplastes sonatus, Newst., sp. n., $ ; a, antenna ; 



b, stigmatic cleft, with spine? ; c, portion of anterior group of 



spines ; d, portion of proximal group of spines. 



into seven areas by pale orange-coloured lines ; a central polygonal area, corresponding 

 to the area occupied by the dorsal plate, from the angles of which radiate to the 

 margin single lines marking off the areas of the lateral and cephalic plates. 



Female, adult (denuded of the test). Ovate ; cephalic margin clypeate ; dorsum 

 low and wrinkled ; two^ large, bilateral, submarginal extensions, both longitudinally 

 striated ; the space between these extensions of the body- wall and the margin 

 markedly constricted. Dorsum with a large keel-like process. Caudal process very 

 short and conical. Stigmatic clefts deep. Antennae (fig. 21, a) of eight segments ; 

 the articulations relatively very broad ; 3rd about equal in length to the 7th and 8th 



