POGONIDAE. 367 
broader than long, widest near the middle, only moderately curved towards 
the front, very gently sinuate towards the rectangular hind angles; its 
surface smooth except near the base, where it is distinctly and closely 
punctured, fossae rather shallow and not well limited, the dorsal groove 
normal. Elytra oblong-oval, only slightly convex, more than double the 
length of thorax, rather broader than it is at the base; their striae only 
moderately deep, finely and indistinctly punctate; interstices slightly 
convex, the 3rd feebly bipunctate, the common apical plicae present. 
This is intermediate between 7. convexus and Sharp’s T. debilis (1802). 
which latter I have not seen, but which apparently has equally small eyes. 
T. diversus has a less transversal thorax than 7. convexus, it is much less 
rounded before the middle, and, though somewhat narrowed, is hardly per- 
ceptibly sinuate behind. The elytra are much flatter and very differently 
sculptured. 
Length, 6mm.; breadth, nearly 2} mm. 
Moa Basin, west of Mount Algidus, Canterbury. Unique. Another of 
Mr. T. Hall’s novelties, on the 20th October, 1913. In the same neighbour- 
hood he secured a few specimens of 7’. puncticollis ; these are larger than 
Sharp’s type, measuring 6 mm. by 2} mm. 
3811. Tarastethus halli sp. nov. 
Nitid, castaneo-piceous ; the base, lateral margins, and apices of elytra, 
the coxae, and trochanters more or less chestnut-red ; palpi, antennae, and 
tarsi somewhat fulvescent. 
This should be located near 7. convexus, but the elytra are manifestly 
different, bemg much less convex, quite oblong-oval, with less curvedly 
narrowed shoulders; their striae are nearly as deep towards the sides as 
they are near the suture, but their punctation is a good deal finer, and, 
indeed, becomes quite indistinct behind; the interstices are nearly plane, 
the 3rd generally bipunctate, the 8th are plicate, and near each side there 
is a series of well-marked punctures. The thorax is nearly a third broader, 
being nearly 2mm. instead of 1} mm., it is less narrowed anteriorly, the 
basal punctation is rather coarser and closer; the posterior angles are 
somewhat reflexed and subacute in place of being flat, and the minute 
setae on these, which are quite discernible in 7. convexus, cannot be detected 
in T. hall. The head is a little broader, with rather larger but not very 
prominent eyes, and the impressions between these are broader but 
impunctate ; the labrum is emarginate. 
The male has a single setigerous apical puncture at each side of the 
last ventral segment, and the anterior tarsi are a little more dilated than 
in the other sex, but are without visible squamae underneath. Flanks of 
prosternum with moderately coarse shallow punctures, abdomen smooth. 
Length, 6-64 mm. ; breadth, quite 2} mm. 
Mount Kiwi and Moa Basin, near Mount Algidus. Five specimens found 
on the 20th October, 1914. This species is named in honour of its dis- 
coverer, Mr. T. Hall. 
3812. Tarastethus fovealis sp. nov. 
Shining, nigro-piceous ; antennae, tarsi, and palpi fulvescent; femora 
fusco-fulvous, the tibiae fuscous, but with obscurely rufescent apices ; 
elytral margins and suture, the mandibles, and labrum piceo-rufous. 
