Suarp—On New Zealand Coleoptera. 367 
the prosternum, and by the peculiar structure of the basal joint of the antennz ; 
this latter character is a very interesting one, and is analogous to our European 
Peecilus, to which sub-genus these New Zealand insects are most nearly allied. 
Although Brown failed to observe the absence of the prosternal sete in the species 
he described, yet his acute eye detected the antennal structure; so I have little 
doubt his two (? are they not the sexes of one) species really belong to this group. 
Pterostichus (Zeopeecilus) achilles, n. sp.—Niger, supra fusco-aeneus, prothorace 
cupreo-aurato, antennis pedibusque piceis; elytris elongatis, sat profunde striatis, 
striis vix perspicue punctatis, interstitils convexis, postice transversim subimpressis. 
Long. 21—23 m.m. 
Mas, tibiis posterioribus apice calcare robusto apice rotundato-hamato armatis ; 
tarsis articulo basale intus dilatato. 
Thorax strongly transverse, the sides rounded, a good deal narrowed behind ; 
the basal impressions large; the hind angles rectangular, slightly obtuse; the 
surface coppery, about the foveze more golden. 
This species is closely allied to P. calcaratus; but so far as the male is con- 
cerned can be readily distinguished by the form of the basal joint of the hind 
tarsus, and by the broader less acuminate prolongation of the tibia; it has, too, 
the basal portion of the thorax shorter, and the elytra more elongate and oblong, 
and these two latter characters will probably permit the discrimination of the 
females. The latter sex I do not know, but probably it will be extremely similar 
to P. calearatus ¢. 
This insect almost agrees with Brown’s description of Trichosternus putus 
(New Zealand Journal of Science, Sept., 1882), but there are no sete on the pros- 
ternal process, so that it is not a Trichosternus ; and although it will probably be- 
found that Brown overlooked this fact when describing T. putus, yet I can scarcely 
think the two identical, as P. achilles is not tinged with green, and the elytral 
strie are only extremely feebly punctulate. 
Picton. Helms, two male examples. 
Pterostichus brounianus, n. sp.—(Scutello basi minus argute plicato). Ro- 
bustus, niger, antennis pedibusque piceis; prothoracis lateribus rotundatis, 
angulis posterioribus valde obtusis; elytris profunde striatis, striis vix punctatis 
hic inde parum conspicue interruptis. Long. 19-20 m.m. 
This species, belonging to the group with four setz on each side of the thorax, 
is distinguished by the unusually great curvation of the sides of the thorax, and 
the very obtuse hind angles, as well as by the large size. There is no denticula- 
tion of the humeral angles, and the striation of the elytra is deep, so that the 
interstices are distinctly convex; the indistinct punctures of the striz are less 
close than usual, and the strize are only vaguely and indistinctly interrupted. 
TRANS. ROY. DUB. SOC., N.S. VOL. WL. 3D 
