148 Psyche [August 



Aside from the very obvious difference in the presence or 

 absence of the ''submarginal compound pores," the two pre- 

 ceding species may be separated very easily by a comparison 

 of a num.ber of other structural characters, as the shape and 

 size of the marginal setse, the distribution of the ventral disk 

 poreS; the character of the dorsal pores in the adult female, and 

 the conspicuous difference in the lengths of the subinarginal 

 setse in the larvae. 



Under the name Psp.udophilippia iniquilinn, Prof. Newstead 

 has described^ from Jamaica a coccid which quite obviously has 

 little or no relationship with the genotype of Pseudophillipa, 

 and equally obviously is closely related to the two preceding 

 species. So far as can be ascertained from the figures and the 

 somewhat incomplete description of this species, it stands in 

 an intermediate position between quinquepori and secretus. 



Explanation of Plates. 

 Plate V. 



Fig. 1. PseudococcAis hromelice (Bouche). Variation in 

 shape of ventral chitinized area of anal lobes, all XI53; top, 

 from left to right, from pineapple, Georgetown, British Guiana 

 (H. Morrison, No. A-703) (2); from Kartabo, B. G. (Wheeler 

 No. 209); from Kartabo, B. G., in leaf petioles of Tachigalia 

 paniculata (Wheeler No. 247 )(2); from Kartabo, B. G. in stem 

 swellings of Cordia nodosa (Wheeler No. 367) (2); bottom, 

 from left to right, first two same as last two of top row; re- 

 mainder from Kartabo, B. G. in stems of red Cecropia (Wheeler 

 No. 116). 



Fig. 2-11, Pseudococcus roiundus, new species, all adult 

 female. Fig. 2, ventral disk pore, XIOOO; Fig. 3, spiracle, X80 

 Fig. 4, tubular duct, XIOOO; Fig. 5. triangular pore, XIOOO 

 Fig. 6, cerarian spine, XIOOO; Fig. 7. apex of abdomen, X40 

 Fig. 8. outline from below showing position of parts. XII. 6 



^Bull. Ent. Research, vol. X, 1920, p. iSi, fig. 5. 



