Maskell. — On Coccidae. 323 



The adult female is dark-red, and when boiled in potash 

 produces much red. Form globular, filling the interior of the 

 gall, with a small quantity of white cotton or meal surrounding 

 the insect. All the organs have disappeared with the exception 

 of the rostrum and spiracles ; the former is very small, the 

 mentum atrophied but apparently dimerous; the spiracles are 

 tubes dilated at each end. There are some small circular 

 spinnerets and some short hairs, which are most numerous 

 near the abdominal extremity ; in fact, the insect is no more 

 than a bag containing eggs and larvae. 



Second stage not observed. 



Larva yellow, elongated elliptical, tapering posteriorly, 

 active ; length, about ^qVo.. Antennae of four (?) joints, very 

 short ; the last is the longest, and is dilated towards the tip ; 

 it bears a few hairs, of which two are very long. Eyes con- 

 spicuous, black, tubercular. Feet rather long ; femur thick ; 

 tibia and tarsus slender ; claw very slender ; digitules four 

 fine hairs, those of the tarsus being very long. The ab- 

 dominal margin bears a few spines, and at the extremity are 

 the usual two long setae, with two small tubercles between 

 them. 



Male unknown. 



Hab. In Western Australia. My specimens were sent by 

 Mr. Lea, on Leptosja&rmwii, sp., from Mount Barker. In his 

 letter Mr. Lea says, "The insect is not common." But the 

 larvae from the galls which I received are exceedingly nu- 

 merous, and I have not noticed any parasites, so that I should 

 have imagined the species would be widely distributed had he 

 not stated the contrary. 



In the absence of almost any organs whatever on the adult 

 female it is difficult to compare this insect itself with any 

 other ; but I think we may consider it distinct, on account of 

 the gall. 



Sphserococcus rugosus, Mask., var. elongatus, var. nov. Plate 



XXI., figs. 8, 9. 



Adult females inhabiting dark-green galls, which are 

 attached by very short stalks, or are more commonly sessile, 

 on the leaves of the plant : none were observed on twigs. 

 The gall is fusiform, conspicuously wrinkled, and there is no 

 orifice at the tip. Average length of a full-grown gall, about 

 iiu., the diameter about -^-^va.. Galls may be attached to 

 either the upper or the lower side of a leaf ; in either case a 

 small orifice leading into the gall is visible in a small pit on 

 the other side of the leaf. 



Male pupae in galls similar to those of the females, but 

 smaller, more cylindrical, yellowish or brownish, and some- 

 what less wrinkled. 



