Maskell. — On Cocciclidtc. :19 



Genus Khizococcus, Signoret. 



Rhizococcus totarae, Maskell. N.Z. Trans., vol. xxii,, p. 142. 



The male sac of this species is snowy-white, very loose iu 

 texture, and formed of rather coarse threads ; length about 



The adult male is of normal form, orange-red in colour, 

 the abdomen yellow; the two cottony "tails" are rather 

 longer than usual ; the spike exhibits a curved appendage. 

 Antennae of nine joints, of which the last three are moniliform ; 

 the ninth is very small. Dorsal eyes, two; ventral eyes, two: 

 ocelli, two. 



There is no particularly distinguishing character about 

 this male. 



Rhizococcus intermedius, sp. nov. Plate V., figs. 8-11. 



Adult female sub-globular, naked ; sometimes conspicu- 

 ously segmented, sometimes nearly smooth ; colour yellow, or 

 red, or sometimes greenish. It affects generally the axils, or 

 the terminal buds, of young shoots of the plant. The epider- 

 mis has a somewhat rough appearance. Anal tubercles rather 

 large, but not usually visible, owing to the position of the 

 insect on the twig. On the dorsum there are three pairs of 

 small spines, and on the margin a double row of spines 

 not set very close together : from all the spines spring 

 glassy filaments which on the margin are sometimes 

 rather long. The anogenital ring has eight hairs. Mentum 

 dimerous. Antenna? of six joints, of which the fourth and 

 fifth are the shortest. Feet normal ; the tibia is rather more 

 than half as long as the tarsus ; all the digitules are fine 

 hairs. 



Larva reddish-yellow, active, naked, flattish, elliptical, 

 tapering posteriorly, segmented. Length about ^oin. An- 

 tennae of six joints. Margin bearing several conical spines. 

 On the dorsum there are five pairs of very large spines, one 

 pair near the cephalic extremity, the other four pairs on the 

 thoracic segments; also a few other smaller single spines. 



Male pupa in a dull- white closel3^-felted sac. 



Adult male brown ; length about o^ii- Thorax rather 

 la^rge ; abdomen somewhat thick, the last segment bearing 

 two rather dilated tubercles, each with two longish sett^ 

 bearing the usual long cottony " tails." Antenna? of ten 

 joints, the first two very short, the next three very long, the 

 sixth shorter, the last three the shortest and sub-equal ; all 

 bearing several hairs. Haltere sub-cylindrical, with one long 

 curved seta. Abdominal spike short. 



Hab. In New Zealand, on Fagiis menziesil, Eeefton. 



This insect is not far removed from R. maculatus, mihi, 



