382 COLEOPTERA. 
The greatly abbreviated elytra, without dorsal striae, the large 3rd 
dorsal segment, and the more elongate, differently formed palpi will at 
a glance, without reference to structural details, enable it to be separated 
from Tyrogetus, its nearest New Zealand ally. 
3833. Phormiobius halli sp. nov. 
Nitid, dark fusco-rufous, antennae and legs rather paler, tarsi and palpi 
fulvous; thinly clothed with slender, elongate, subdepressed, flavescent 
pubescence ; the punctation very fine and indistinct. 
Head, eyes included, about as broad as the middle of the narrow thorax, 
slightly curvedly narrowed and ciliate behind, frontal tubercles finely punc- 
tate. Eyes situated behind the middle, rather low down, small and slightly 
prominent. Thorax a little longer than broad, strongly rounded in the 
middle, convex there, somewhat depressed at the base, which has a distinet 
median fovea and another at each side of it. Elytra depressed towards 
the base, bi-impressed there, the sutural striae distinct there but obsolete 
behind. 
Fem.—Hind-body rather broader than that of the male; basal 3 ventral 
segments transversely depressed and thickly fringed behind. 
Male.—Basal 2 ventral segments with fulvous cilia but not depressed 
behind. Posterior trochanters on the inner side with a thick spiniform 
process directed backwards. 
Length, 2 mm.; breadth, } mm. 
Belgrove, near Nelson. Mr. T. Hall secured a dozen specimens, but 
only three males, amongst decaying flax-leaves, during October, 1914. 
Agatyrus gen. nov. 
Allied to Phormiobius, but exhibiting the following disparities :— 
Maxillary palpi thicker, their 2nd articulation with the basal half slender 
and curved, the other considerably enlarged and subsecuriform ; 3rd almost 
as long, slender and stalk-like at the base, gradually dilated towards the 
extremity ; 4th as long as ‘its predecessor, stalk-like near the base, its 
longer apical portion securiform and provided with a small apical acicular 
appendage. 
Basal joint of tarsi small but distinct, 2nd slightly and gradually 
thickened, apparently grooved above and prolonged nearly half-way 
underneath the 3rd, which is about as long, but its base is implanted on 
top of and just about the middle of the 2nd ; the claws are of equal length, 
though one is rather more slender than the other. In other allied genera 
the 3rd tarsal joint is attached to the apex of the 2nd, and both are slender 
and filiform. 
Elytra less abbreviated with well-marked dorsal and sutural striae. 
First visible dorsal segment quite as long as any of the others. Ventral 
segments 2-4, in the female, depressed and thickly ciliate behind, 5th short 
and widely emarginate, 6th also short, obtusely angularly prominent at the 
middle of the extremity. 
Male.—Metasternum with a transversely quadrate lamina in the middle, 
this is elevated in front and finely margined there and at the sides. 
Anterior coxae distinctly, the posterior very widely separated. Tro- 
chanters elongate, each of the hind pair with a cylindrical process directed 
backwards. Basal ventral segment truncate between the widely distant 
