20 Transactions. — Zoology. 



Larva yellowish, flat, elliptical, active; length about /yin. 

 Form Lecanicl ; abdominal cleft and lobes conspicuous. Margin 

 minutely serrulate. Antennae rather large, with six subequal 

 joints. Mentum lai'ge, dimerous. 



Adult male yellowish-brown ; wings iridescent. Length 

 of body about ^Vn. Antenna of ten joints, all long and 

 slender except the first tw^o, and all bearing several hairs, of 

 which some on the last joint are knobbed. Abdominal spike 

 long, slightly curved, and a little dilated near the end. Dorsal 

 eyes, four ; ventral eyes, four : ocelli, two. Feet normal. 



Hah. In New Zealand, on Corokia cotoneaster, in the 

 Reefton district. It seems to be rather uncommon. 



I think that this insect must be separated from those of 

 the genus hitherto described. It is quite distinct from the 

 conical I. patella, I. ornata, or I. fagi, and the dehcately- 

 marked and very thin translucent segments of the test differ 

 from those of I. leptospermi. The specific name has been 

 adopted on account of the difficulty there is in detecting the 

 female on the twig, owing to the similarity of its general 

 colouring to that of the bark : in fact, even with a lens it is 

 not always easy to make out the contours with clearness. 



Subdivision LECANID^. 

 Genus Lecanium, Illiger. 



Lecanium baccatum, sp. nov. Crav^ford Coll. Plate II., 



figs, 8-16. 



Adult female dull-yellow, with sometimes a few brown 

 patches, often wholly dark-brown ; globular, with only a small 

 orifice beneath for attachment to the plant ; average diameter 

 about iin,, but some specimens are larger. Epidermis almost 

 smooth, not speckled with black, but after treatment with 

 potash a great number of small, oval, light marks are visible, 

 each with a central clear spot. On the dorsum, near one side, 

 is visible a black spot, and on close examination this is found 

 to contain a small orifice and two very minute tubercular 

 lobules : the spot contains therefore the anogenital ring, 

 which appears to be quite hairless, and the abdominal cleft 

 is represented by an exceedingly shallow and often quite in- 

 distinct depression between the spot and the opening on the 

 twig. The interior of the globular mass is hollow, and the 

 organs are only to be made out by maceration and dissection. 

 Eostrum rather large : mentum short, monomerous, Antennae 

 of eight joints, of which the third is the longest, the fourth 

 next, the rest shorter and subequal ; the last is subglobular, 

 and bears some short hairs. Feet rather slender (of what use 

 are they ?) : upper digitules fine hairs ; lower pair slightly 

 dilated. 



