144 Transactions . — Zoology. 



segment ; ventrally. six on each segment. Anal tubercles 

 normal. 



Male unknown. 



Hab. In New Zealand, od various species of Fagus — 

 F. fusca, F. menzicsii, F. cUffortioidcs, Eimutaka Hills near 

 Wellington, Capleston, Reefton, and Picton ; almost always 

 on the leaves. 



This is an extremely pretty insect, especially in the second 

 stage, when the biight-green of tlie body contrasted with the 

 silver fringe and dorsal tubes makes it a very attractive 

 microscopic object. It is not likely to be mistaken for any 

 other species. Unfortunately the bright colours fade after 

 death, and specimens in the cabinet lose nmch of their natural 

 beauty. 



Rhizococcus maculatus, sp. uov. Plate VII., figs. 6-12. 



Adult female sub-globular ; colour green or brown ; length 

 about Y^jvin. ; segmented, but the segments indistinct; naked. 

 Anal tubercles rather large, setiferous. Antennae of six rather 

 thick subequal'^ joints, the last with some shortish hairs. 

 Feet rather thick ; tibia shorter than the tarsus ; upper 

 digitules fine knobbed hairs, lower pair rather long and largely 

 dilated at the ends ; on the trochanter a long seta. Mentum 

 dimerous. Anogenital ring simple, with eight hairs. No 

 spines on the dorsum, biit some slendei' conical spines on the 

 edges. 



Female of second stage very light green, spotted on the 

 dorsum sparsely aiid irregularly with largish patches of intense 

 black ; convex, elliptical, ventral region slightly concave ; 

 length about o\;in. ; quite smooth and shmy, the segments very 

 obscure. Anal tubercles very small, and not visible in dorsal 

 view, being hidden by the convexity of the abdomen. The 

 margins bear several conical spines, not set very closely to- 

 gether, from which spring longisli, slender, glassy tu.bes. On 

 the dorsum there are four longitudinal rows of slender spines, 

 two median and two others haH\\ay to the edges. Antennae of 

 six subequal joints. Feeb normal ; lower digitules short. 



Larva yellow or light-green ; flattish; elliptical; segmented, 

 with obscure segments ; length about ^^n. Anal tubercles 

 conspicuous, setiferous. Antenna*, hyaline, with five sub- 

 equal joints, the last Ijearing several long hairs. Feet hjaline, 

 rather thick; lower digitules very short. Mentum dimerous. 

 On the margin is a row of conical spines ; and on the dorsum 

 are twenty conical spines, largei- than the marginal ones and 

 arranged as follows : two pairs at the cephalic extremity, four 

 in a row just above the rostrum, and twelve in four rows on 

 the anterior abdominal segments. 

 Male unknown. 



