Maskell. — On Coccididae. 11 



veniently employed ; and, in common with other students of 

 the Dialpida, I "have adopted his plan in most cases. But I 

 wotdd not agree with Mr. Morgan if he intends to say that the 

 forms of the puparia are to be onr only generic guides : and I 

 notice that Signoret himseK adds that such characters as the 

 arrangement and numbers of the spinnerets may be usefully 

 takeninto account. Indeed, I woidd not venture to use the 

 term " rule " at all in connection with such a study as that of 

 Coccids, which even yet is scaix-ely more than gi-azed, as it 

 were, and certainly not deeply broken into. But, rule or no 

 rale, it would still be a question whether uniformity were a 

 necessity. It is good, doubtless, and that is all. In the 

 present "case an exception does no harm ; especially as the 

 generic separation of PoUaspis has been made to depend upon 

 an organic difference requiring for detection close microscopic 

 observation, and not merely a trivial external character which 

 might very possibly be fallacious. 



On the whole, "therefore, whilst desiring as much as any- 

 body simplification, and deprecating entirely any hasty and 

 superficial eagerness to extend the hst of genera, I venture to 

 maintain the separation of PoUaspis. 



Genus Paelatoeia. Targioni-Tozzetti. 



Female puparia elongated or sub-circular, the peUicles 

 terminal or sub-central. Male pupaiia elongated. Abdomen 

 of female as if crenulated and largely fringed. 



This genus has not hither to been reported from this part of 

 the world. Three species are known in Europe and America. 



Parlatoria pittospori, sp. nov. Plate I., figs. 5-9. 



Fem>.Je puparium dull dark greenish-grey, sometimea 

 almost black ; peUicles green, sub-central. Form sub-ellipti- 

 cal, flattish. Length about ^in. 



Male puparium elongated, not carinated. Pellicle ter- 

 minal. Length about J'^in. 



Female dark- brown, segmented, sub-eUiptical but shrivel- 

 ling at gestation to globular. Posterior extremity broadly 

 rounded, ending in six trifohate lobes not close together, and 

 with equal spaces between them. Margin conspicuously cre- 

 nulated, and bearing in each crenulatiou and between the 

 lobes a fringe of broad scaly hairs which are deeply serrated 

 at the ends only. This fringe extends along the margin nearly 

 as high up as the rostral region. The margin is considerably 

 thickened on the last segment, and just within it is a row of 

 curved narrow markings which may be elongated spinnerets. 

 There are four spinneret-groups : the upper latenils have 

 13-16 orifices, the lower pair 11-13 : many single tubular 

 spinnerets on the dorsal surface. 



