96 ROBERT NEWSTEAD—OBSERVATIONS ON 
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is removed from the branch; it then bears a very striking resemblance to 4 
helmet in miniature; whether this character is a constant one remains to be 
seen, but as it is present in all of the examples before me, I feel that it cannot 
be due altogether to exigency of location upon the slender twigs. There are no 
dentate spines in the stigmatic clefts as in C. floridensis and the integument is 
uniformly chitinous in the old examples. 
Ceroplastes vinsonioides, sp. n. 
Test of old adult female-—Dusky crimson, or brownish with a faint tinge of 
dusky crimson ; anterior margin sometimes paler (possibly pale crimson or pink 
when fresh); form rather broader than long; flattish above, with a central 
nucleus ;_ sides slightly recurved and projecting, and radiating from them are 
four short, thick, elevated arms, the anterior pair sometimes deeply concave 
dorsally, and all of them may be tipped with white wax. 
Test of young adult female.—Similar in colour to that of the older examples ; 
fat, with central area slightly raised and nucleated; sides with four large and 
two small arms, the posterior pair shortest and tipped with greyish wax. 
Ventral surface (fig. 10, a) with a rather broad and conspicuously white line of 
secretion (wax) extending from each of the four stigmatic clefts to the tips of 
the radiating arms; the anterior half of the short posterior arms are also 
formed of pure white wax, but this rarely extends to the dorsal surface. 
Length of old examples, 4-5 mm. ; width, 5-6 mm. ; height, 1-1°50 mm. 
female, adult—Cephalic region without a lobe-like extension ; caudal process 
rudimentary ; stigmatic clefts (fig. 10,4) sharply defined but not very deep; 
spines large, conical, and somewhat irregular in size, arranged three deep in the 
centre, suddenly merging into a double row and finally into a single one on 
either side ; externally to these is a very large isolated and bluntly bidentate 
spine (fig. 10, ¢) separated from the group by a little more than its own length ; 
Fig. 10.-Ceroplastes vinsonioides, Newst. ; a, young adult female, ventral view ; 0, stigmatic 
cleft, with spines ; c, bidentate spine ; d, e, glands. 
parastigmatic glands numerous, forming a compact group just within the spines. 
Antenne of 6-7 segments. Legs rather long; digitules very long, upper pair 
strongly dilated ; claw minute. Mentum with several long slender spines. Apex 
