46 Transactions. — Zoology. 



almost a plumose appearance. From these dilations and the 

 median constriction the antenna appears to have nineteen 

 joints, and it requires dose examination to show that there 

 are really only ten. Eyes very large and prominent, dark- 

 brown, and divided into numerous semi-spherical facets ; at 

 the base of each eye is a prominent tubercle. Feet long, and 

 very hairy; coxae short and thick, tibias long and slender; claw 

 thin. The digitules appear to be represented- by two minute 

 bristles on the claw, as in Ccelostoma zcclandicum. Abdomen 

 long and slender, with eight cylindrical segments, each segment 

 bearing some hairs ; the last segment ends in two conspicuous, 

 thick, cylindrical processes which, when the insect is viewed 

 sideways, are seen to turn upwards, and beneath them the 

 conical, sharp-pointed sheath of the penis turns downwards 

 (figs. 3, 4) ; penis large, reddish-coloured, with many recurved 

 short hairs, and at the end a ring of short spmes. Each 

 terminal process of the abdomen bears three or four long 

 strong setss. 



Length of the body somewhat variable ; some of my speci- 

 mens attain ^ inch ; expanse of wings ^ inch ; length of 

 antenna ^ inch. 



This is a very handsome insect, clearly showing the 

 characters of the group MonophlebidcB, and a little resembling 

 the male of Ccelostoma : but specially fine in its variety of 

 colours. The antennae approach those of Lewhia ; the two 

 abdominal terminal processes recall the six or eight tassels of 

 Moiiophlelms. Mr. Colenso informs me that the insect flies 

 strongly and swiftly, which is rather exceptional amongst 

 Coccids, whose wings usually seem too weak for them. 



Group LECANIDIN^. 



Sub-section LECANo-CocciDiE.''' 



Abdominal cleft and lobes present in all stages of female. 

 Insects covermg themselves with a secretion of cottony or felted 

 matter, forming more or less complete sacs. 



Genus, Eriochiton, gen. nov. 



Secretion white, felted, formed of agglutinated threads issuing 

 from prominent spiny spinnerets ; inconspicuous or absent on 

 adult female, more or less noticeable on female larvae and pupae ; 

 thick on male pupa. Abdominal cleft and lobes normal. Feet 

 and antennje present in all stages. Adult antennae seven- 

 jointed. 



Differs from Lecanodiaspis, Targioni, in retaining the feet, 

 and in the antenna3 ; from riiilijijiia, Targioni, in not con- 

 structing its sac, or test, simply for gestation. 



• "Trans. N.Z. Inst.," vol. xvL, 1883, p. 128. 



