408 Transactions. — Zoology. 



fifth together ; each joint has a few hairs, and the last has two 

 rather long. Feet rather long and slender, with some hairs ; 

 there is no tarsal digitule, and only one short bristle on the 

 claw. The margin of the body bears a row of rather long 

 hairs, and many similar hairs are on the dorsum ; and at the 

 posterior extremity there are six long setae with tubercular 

 bases. The epidermis is covered with numerous large circular 

 nmltilocular spinneret-orifices. The eyes are small, tuber- 

 cular. Rostrum large ; mentum biarticulate. 



The adult male is dark-red ; length about ^^in. The wings 

 are dark-grey ; nervure red ; there are also two longitudinal 

 white streaks. Abdomen distinctly segmented, and each seg- 

 ment bears some rather long hairs. The abdomen terminates 

 in two cylindrical processes, which in life are turned upwards, 

 and beneath and between which is the short subconical 

 sheath from which issues the penis ; each of these processes 

 bears four long setae. Eyes prominent, numerously facetted, 

 nearly black. Antennae black, with ten joints, of which the 

 first two are tubercular, the next seven elongated and com- 

 pressed in the middle, the last subcylindrical. All are about 

 the same length except the two first, which are shorter and 

 equal ; the second bears two shortish hairs, the last has 

 several much longer and irregularly arranged, and the seven 

 intermediate ones bear each two sets of long hairs arranged in 

 rings ; so that the whole antenna has a plumose appearance. 

 Feet long and slender, black ; the tibia is twice as long as the 

 tarsus ; all the joints are hairy. There is only one digitule, 

 which is a short tine bristle on the claw. 



The original food-plant of this species I gave as Hakea 

 gibbosa, and in 1893 Mr. Froggatt remarked that the insect 

 was rare ; but he tells me now that he has found it also on 

 Goodenia ovata, but still in the same locality, near Sydney. 



A comparison with the description and figures which I 

 gave of the male of I. 'purckasi in vol. xix. of our Transactions, 

 and also in my " Scale-Insects of New Zealand," 1887, will 

 demonstrate the exceedingly close similarity between the 

 males of the two species. 



Genus Tachabdia. 

 Tachardia decorella, Maskell, Trans. N.Z. Inst., 1892, 



p. 247. 



In May, 1895, I received from Dr. Alcock, Superintendent 

 of the Indiam Museum, Calcutta, some specimens of Coccids 

 stated to attack "tea- and forest-trees in India." They turned 

 out, greatly to my surprise, to be Tachardia decorella. As no 

 locality was given, and the "forest-trees" were not named, I 

 could not form any definite judgment as to the likelihood of 

 these insects being native to India or introduced from Austra- 



