366 SHarp—On New Zealand Coleoptera. 
increase it occasionally occurs that one or even two of the additional setze may be 
duplicate on one of the sides of the thorax, though rarely or never on both sides; 
thus though the character appears to be really an important one, it must be used 
with some caution as to this point. 
PTEROSTICHUS. 
Pterostichus (Trichosternus) compressus, n. sp.—Niger, supra fusco-neus, 
limbo anguste viridescente, antennis pedibusque piceis; prothorace anterius minus 
lato, prope angulos anteriores depresso, angulis posterioribus rectis; elytris sat 
profunde striatis, striis impunctatis. Long. 21-23 m.m. (Plate xm, fig. 6.) 
This is one of the allies of P. sylvius, Bates, a group of species, or perhaps 
varieties, very difficult at present to distinguish ; it is, however, not so green in 
colour as P. sylvius; the stric of the elytra are almost impunctate, and the thorax 
is rather longer, the basal portion, as shown by the sinuation at the sides, being 
longer, and the male front tarsi considerably less dilated. The hind angles of the 
thorax are not at all directed outwards, and are nearly rectangular, very slightly 
obtuse ; the tooth formed by the basal margin of the wing-case is very distinct. 
P. rectangulus, Chaud., and P. capito, White, have the thorax broader at the 
front margin, and this is also the case with P. aucklandicus. 
Picton. Helms, a series of ten individuals, showing but little variation. 
Pterostichus (Zeopeecilus) calcaratus, n. sp.—Niger, supra fusco-zeneus, pro- 
thorace cupreo-aurato, antennis pedibusque piceis; elytris profunde striatis, strus 
subtiliter punctatis. Long. 20-22 m.m, (Plate xn, fig. 7.) 
Mas., elytris nitidis interstitiis convexis ; tibiis posterioribus apice intus calcare 
acuminato-hamato armatis. 
Fem., elytris opacis, interstitiis haud convexis. 
Antennz with a depression on the upper face of the basal joint. Thorax 
strongly transverse, with much rounded sides; these smuate behind, so as to give 
rise to a well-marked basal constriction; hind angles rectangular; surface cop- 
pery, more golden about the fovez ; these broad, quite impunctate, not touching 
the lateral margin. Elytra with rounded sides, strong humeral denticulation, and 
very regular striz; the interstices of these a little transversely waved on the 
apical portion. The male has one, the female two, sete on each side of the hind 
margin of the last ventral segment. The sexes differ a good deal in the elytral 
sculpture, as mentioned above. 
Picton. Helms, a good series of nearly twenty examples. 
N.B.—This, and the allied species, P. achilles, putus and combesi, form a 
distinct sub-genus, distinguished from Trichosternus by the absence of sete on 
