368 Suarp—On New Zealand Coleoptera. 
There is a simple deep fovea on each side of the thorax at the base, distant from 
the lateral margin. The male has the hind femora angularly dilated in the middle, 
and only a single seta on each side of the hind margin of the last segment, whereas 
in the female there are two setze on each side. 
I have named this species in honour of Captain Thomas Broun, who has 
rendered great service to entomology by the discovery of a great number of New 
Zealand insects whose existence was previously unsuspected. 
Picton. Helms, a good series. 
Pterostichus myrmidon, n. sp.—(Scutello basi striato). Elongatus, supra sub 
planatus niger, antennis tarsisque piecis; prothorace vix transverso, angulis 
posterioribus argutis fere rectis; elytris striatis, striis ubique a basi ad apicem 
interruptis. Long 16-17 m.m. (Plate xn, fig. 8.) 
This species is very different from the others of the group with four thoracic 
setee, the thorax being more quadrate, and the general outline more parallel. The 
thorax is but little curvate, and is slightly narrowed behind, but its outline is only 
very slightly sinuous. There is an extremely minute projection outwards of the 
hind-angle itself, so that the angles which, except for this, would be slightly ob- 
tuse, are almost rectangular. The surface is feebly transversely rugose ; the basal 
foveee are large and deep, distant from the sides; and between each and the out- 
side there is at the base a distinct plication. The striation of the elytra is inte- 
rupted throughout in a very distinct and almost regular manner. The hind femora 
of the male are much swollen in the middle, so as to form an angular prominence ; 
they are also very broad in the female, but in this sex the prominence does not 
form an angle. In each sex there are two punctures on each side of the middle of 
the hind margin of the last ventral plate. 
I have little doubt that Holcaspis cribratus Brown is allied to this species, but 
it is described as possessing a rugose head, and a more remarkable development of 
the peculiar sculpture of the elytra. P.myrmidon bears a considerable resem- 
blance in size, form, and sculpture to P. cribratus Dej., found on Monte Rosa in 
Europe. Holcaspis hispidulus Brown no doubt pertains also to this group, as 
shown by the number of thoracic setee mentioned in his description. It has appa- 
rently a very different sculpture of feeble abbreviate striz. 
Picton. Helms, a good series. 
Pterostichus constrictellus, n. sp.—(Scutello basi striato). Angustulus, niger, 
antennis tarsisque piceis; prothorace posterius angustato, angulis posterioribus 
obtusis; elytris striatis, striis punctatis. Long. 11-12 m.m. 
Thorax a good deal broader than long, the sides a little curved, considerably 
narrowed behind, so that the base is evidently a little narrower than the front 
