Maskell. — On Coccididae. 225 



ters exactly as he stated them, my species would not come 

 quite into Prosopophora : for example, he says, " Surface with 

 granulose raised lines; no anal cleft or tubercles." But the 

 first of these is of no generic importance whatsoever ; it may 

 be a fair specific character : the second is manifestly not quite 

 correct, as in his fig. 1/ he shows two distinct tubercles. It 

 is therefore not only convenient, but even necessary, to some- 

 what amend the generic characters ; and this being done I can 

 avoid the danger of overloading the study of Coccids with a 

 new genus founded upon insufficient distinctions. 



Mr. Douglas, having seen only one species, expresses much 

 doubt as to the group in which Prosopophora should be placed. 

 My two Australian species (or varieties) clearly show it to be 

 Acanthococcid, and not far removed from Planchonia : indeed, 

 I have hesitated long before separating it from that genus. 

 There seems, indeed, to be no marginal fringe on the test or sac ; 

 but the adult female exhibits figure-of-eight orifices which, 

 though much smaller, resemble those of PlancJionia epacridis. 



Prosopophora acaciae, sp. nov. Plate XIV., figs. 1-7. 



Adult female covered by a waxy test; test elliptical, slightly 

 convex, smooth, yellowish-brown ; length about Ain. ; margin 

 irregular, but without fringe ; there is a small orifice at the 

 posterior extremity. When the test is lifted up the portion of 

 the twig immediately beneath is seen to be depressed and 

 concave, and the space so formed is usually filled with eggs or 

 eggshells. 



Male pupa covered by a white, waxy, elliptical test ; 

 length of test about ^g-in. Anterior portion of test smooth, 

 the posterior region transversely corrugated. 



Adult female brown, filling the test, but shrivelling at 

 gestation. Antennae very short, rather thick, with apparently 

 only four joints, but the joints are much confused, and there 

 may be six ; the last joint bears a few hairs. Feet atrophied, 

 very small and thick, the tibia and femur confused, the tarsus 

 very small and very short, followed by a minute claw ; digi- 

 tizes probably absent. Anal tubercles moderate, each bear- 

 ing two or three spiny hairs. The epidermis bears a great 

 number of tubular cylindrical spinnerets, and many very 

 minute figure-of-eight orifices. On the margin there are a 

 few conical spines and a double row of very small figure-of- 

 eight orifices. 



Female of the second stage brown, flattish, elliptical ; 

 length about ^in. Antennae of six rather thick joints. Anal 

 tubercles large, converging at the extremity so as almost to 

 exhibit an abdominal cleft, but close examination shows that 

 there are no dorsal lobes, and that the abdomen is not Lecanid; 

 on each tubercle there is a long terminal seta. 

 15 



