105 



sponding stage of auy other species of the genus: they have uo special arrangement, 

 but aie scattered quite thickly over the dorsum and nnder the lateral edges of the 

 abdomen. Even in this stage the waxy secretion is quite abundant, although no 

 definite arrangement can be seen in the poor specimens at hand. 



Female larva — Second Stage (Fig. 19, &, c, and Fig. 18).— Color reddish yellow; legs, 

 antenna, and eyes brown, hairs yellow. Body stout, slightly concave. Antennae .six- 

 jointed ; proportions of joints as in /. rosce except that joint 3 is considerably less than 

 twice as long as joint 2, and 5 and 6 are somewhat stouter, while in the unsatisfac- 

 tory specimens at hand the club does not seem to be concave on the outside. This 

 last point can not be determined accurately without fresher material. The anal 

 bristles are one-sixth the length of the body, and the other bristles are of insig- 

 nificant length except four on the front which are as long as the antennae. The tarsi 

 are more curved than in the first stage and are about two-thirds the length of their 

 tibiae. As in the first stage the secretory pores are large and very abundant- 

 The waxy secretion is very abundaut. In the smaller specimens a dorsal and 

 two sublateral rows of tufts are noticeable as well as a row around the margin of 

 the body. In larger specimens, however, the dorsal und sublateral rows are lost 

 and the secretion seems to form a more or less even coating over the surface of 

 the bod}'. The circumferential row remains distinct, however, and contains about 

 thirty-five short, more or less distinct, tufts which are more readily distinguish- 

 able towards the anal end of the body. The wax is pure white, as also in the 

 first stage, while in the corresponding stages of /. rosoe and 7. viontaerratensia it \& 

 yellow, which color persists to the adult stage in /. seychellarum. 



PARASITE. 



Within one of the mounted individuals of the second stage is to be 

 plainly seen the puparium of a Dipteron apparently of the family 

 Phoridce, 



CATALOGUE OF THE SPECIES OF ICERYA. 

 Genus ICERYA. 



V. Signoret, Annales de la Societe Eniomologique de France^ 1875, pp. 

 351-352. 



leery a seychellarum West wood. 



J. O. Westwood, Gardeners^ Chronicle, 1855, p. 830. 



Syn. Icerya sacchari Signoret. 

 V. Signoret, loc. cit. 



Habitat : Madeira, Seychelles Islands, Eodrigui z Island. Food 

 plants : Sugar Cane, Palms. 



Icerya purchasi Maskell. 



W. M. Maskell, Transactions and Proceedings of the Seic Zealand In- 

 stitute, 1878, p. 220. 



Habitat: Australia, South Africa, New Zealand, California, Mexii;o. 

 Food plants : Almost all plants, principally the Acacias and Citrus trees. 



Icerya aegyptiacum (Douglas). 



Syn. Crossotosoma aegyptiacum Douglas. 



J. W. Douglas, Entomologists' Monthly Magazine, 1890, pp. 79-81. 



Habitat: Cairo, Egypt. Food plants : Ficus spp. 



