1886.] E. T. Atkinson — On the Homopterous Family Coccidse. 279 



centric circles formed each below the other. The larva is flat, twice 

 as long as broad ; as it grows it becomes higher than broad, but still 

 keeping its elongated form ; 2^ times as long as broad, very convex 

 above and flat beneath : it preserves its limbs and antennas, which are 

 6- jointed in the larva and 8-jointed in the adult. 



Genus ViNSONiA, Signoret. 



A. S. E. F. (5 ser.) i, p. 423 (1871) ; ii, p. 33 (1872). 



Insects in which the pellicle covering the body is of a waxy ap- 

 pearance, corneous, transparent, forming on its disc a tortoise-like tes- 

 sellation and having seven rays or arms, one corresponding to the head 

 and three on each side corresponding to the stigmata, with a very short 

 one at the anal extremity. The insect beneath is oval, strongly rounded, 

 a little narrowed towards the head : antennae 6-jointed, of which the 

 third joint is longest and equal to the last three taken together ; the 

 sixth is longer than the fourth and fifth and has some hairs ; there are 

 two hairs on 1, 2, and 5 : rostrum 1- jointed, short : feet slender and 

 short, tibiae as long as the tarsi. 



ViNSONiA PULCHELLA, Signoret. 



A. S. E. F. (4 ser.) x, t. 7, f. 7 a—d (1870) ; 5 (ser.) ii, p. 34 (1872). 



The ? has the appearance of a 7-branched star, and, as it grows 

 older, the secretion fills up the space between the branches of the star, 

 which appear then to be united by a membrane : the disc of the dorsum 

 is convex and semi-globose. This species has been found on the mango 

 in Reunion. 



Ceroplastes, Gray. 



Spicil. Zool. p. 7 (1830) : Walker, Cat. Horn. B, M. iv, p. 1086 (1851) : Sign,, 

 A. S. E. F. (5 ser.) i, p. 424 (1871) ; ii, p. 35 (1872) ; Comstock, Rep. Agr. U. S. 

 p. 330 (1880). 



Species covered with a thick waxy matter which does not adhere 

 to the insect, and which is formed of layers of secretions from the spin- 

 nerets. Some of the species have on the dorsum tubercles or tumes- 

 cences varying in size according to age and which disappear more or 

 less as the insect reaches its full growth, then from being more or less 

 fiat with concentric lines and tumescences it becomes globular and 

 smooth : antennae 6-jointed, of which the third joint is the longest : 

 in the larval stage the fourth and fifth joints appear as one : legs long, 

 tibiae as long as the tarsi : claw with four digitules, the shorter pair 

 very stout and horn-shaped : $ unknown. 

 36 



