Suarp—On New Zealand Coleoptera. 369 
margin, without the least sinuation at the sides, so that the hind angles are 
obtuse; the basal foveze deep, distant from the sides. Elytra narrow, without 
humeral denticle, the strize regular, rather deep, closely and regularly punctate, 
not interrupted; the interstices in the male rather more convex than in the female. 
In the male the hind femora are a little dilated in the middle, so as to form an 
obtuse prominence, not an angle; in each sex there are two punctures on each side 
of the hind margin of the last ventral ring. 
The individuals of this species are the smallest I am acquainted with of the 
group having four lateral tactile seta to the thorax. P. subenea Guer., Bates, is 
very similar, but has the sides of the thorax sinuate behind, and the striation 
coarser and less regular. ‘This is the species treated by Bates as the F. elongella 
White, and it is indeed so similar thereto, that I also myself, previously to noting 
the difference in the thoracic sete, considered it a small variety thereof; hence 
my remarks in New Zealand Journal of Science, 1884, p. 298, on White’s Feronia 
elongella, require correction as regards the occurrence of F. elongella at Christ 
Church; it being P. constrictellus that has been found there. F. elongella has 
the peculiarity—unique, so far as I know, among the New Zealand species—of 
possessing three lateral thoracic set, one at the hind angle, one a little behind 
the front angle, and one just about the middle. 
Christ Church, Wakefield, Helms. Greymouth, Helms. One example from each source. 
Pterostichus longiformis, n. sp.—(Scutello basi striato). Minor, angustulus 
subparallelus nigro-piceus, nitidus, antennis pedibusque piceo-rufis; prothorace 
elongato, basi utrinque bifoveolato, angulis posterioribus rectis; elytris oblongis, 
regulariter profunde striatis, striis impunctatis. Long. 11 m.m. 
A distinct species belonging to the group with only two lateral thoracic set, 
and probably allied to P. sylvaticus. The thorax is elongate, the length being 
five-sixths of the width. The sides are very gently sinuate behind, the external 
angles being rectangular, quite minutely prominent externally. The two basal 
foveze on each side are shallow and indefinite, the outer one small. The striz 
on the base of the scutellum are deep and definite ; the elytra are narrow, parallel, 
flat, with slight humeral denticle, and very regular, deep striation, the striz being 
simple. In the male the hind femora are much swollen, and are angular in the 
middle. ‘There is only one puncture on each side of the last ventral segment. 
The female is unknown. 
This appears to be allied to P. angustulus Chaud. (elongatus Blanchd.), as well 
as to P. sylvaticus Chaud., but does not sufficiently agree with either description. 
Christ Church, Wakefield. A single example. 
Pterostichus oscillator, n. sp.—(Scutello levigato). Nigerrimus, antennis 
extrorsum tarsisque piceis; antennis gracilibus, oculis conyexis; prothorace basi 
3D 2 
