154 Transactions.—Zoology. 
Legs finely striate; two minute spines at the lower end of femora: 
anterior pair of femora with a long ridge on the upper margin; tarsi and 
tibie finely pubescent ; lowest joint of tarsus flat, broad. Abdomen 4 lines 
long ; anal appendages finely pubescent. Weight barely 2 grains. 
Hab. On trees and shrubs, Norsewood, Waipawa County; 1884: W.C. 
Obs, This interesting, slim, delicate, and fairy-like little creature, is by 
far the smallest species of the genus known to me; it differs in several 
respects from its congeners, particularly in its antenne. It moves very 
slowly. At first I had supposed it to be merely the larval state of one of 
the larger species, but its fully developed antennæ, etc., forbid such a 
supposition. 
4, Bacillus atro-articulus, sp. nov. 
Female: General colour greenish-grey blotched with brown, bearing a 
slight iridiscent hue. Head ochraceous, oblong, 3 lines long, wider than 
prothorax, gene gibbous, vertex depressed, a sub-lunate ridge between the 
eyes, with two small pits (foveole) between ridge and base of antenne ; 
nine large black spines on the occiput, and a single tubercle just above each 
eye; antenne slender, pubescent, 10 lines long, composed of eighteen joints, 
apical one the longest; palpi pubescent. Prothorax 2 lines long, two black 
spines at lower edge of pronotum ; prosternum smooth: mesothorax 73 
lines long, six spines in three pairs on mesosternum, several scattered and 
one large pair of black ones central on mesonotum, and a regular longi- 
tudinal row of five small spines on the pleura extending down to interme- 
diate coxæ : metathorax 8 lines long, two pairs of spines on metasternum 
and three pairs on metanotum, with a similar row of five small spines on 
pleura extending to posterior coxe. Abdomen rather stout, 12 inches long, 
mostly smooth, wrinkled longitudinally below ; two short blunt spines above 
on apical end of each segment, decreasing gradually in size downwards ; 
two small tubercles below at apical end of the first segment, the end of the 
sixth segment has foliaceous sides and one large central spine below, with a 
thick ridge running from it to the middle of sheath of ovipositor: anal 
appendages large bearing scattered black hairs. Legs rather short; all 
having a ridge of double black spines at the apical ends of femora, and two 
spines at apical ends of tibiæ, and all joints black at their apical ends, but 
the terminal joints of the tarsi are light glaucous-green ; tarsi and ungues 
are very hairy, the tibie and femora slightly so; hairs black :—anterior pair, 
coxe with two black spines below; femora 10 lines long with four sharp 
angles deeply sulcated between, bearing a single row of six large spines on 
the lower edge, the upper edge sinuous and bearing three minute and 
distant spines; the upper excised portion 4 lines long with an elevated 
sharp ridge; tibie of equal length, very slender, smooth; the basal joint 
