OF NEW ZEALAND. 991 



of this list, and, moreover, one group, the first, is made up of species 

 belonging to two subgenera. 



As regards the setae, I may state that careful discrimination is 

 necessary, as is the case with the subgenus Trichostemus, owing to 

 their liability of removal in the process of cleaning. 



Thorax with two setce on each side. 



P. prolixus, Broun. P. mordax, Broun. 



P. integratus, Bates. P. longiformis, Sharp. 



P. cavelli, Broun. P. sternalis, Broun. 



P. procerulus, Brown. P. oscillator, Sharp. 



P. ovatellus, Chaudoir. P. perfidiosus, Broun. 



P. placidulus, Broun. P. hunuensis, 



P. impiger, P. maorinus, Bates. 



P. minor 



Thorax with three seta on each side. 

 P. elongellus, WJiite. 



Thorax with four setce on each side. 



P. hispidulus, Broun. P. detractus, Broun. 



P. cribralis, P. subseneus, Guerin. 



P. myrmidon, Sharp. P. redicnemus, Bates. 



P. hybridus, Broun. P. pastoricius, Broun. 



P. praecox, P. inconstans, 



P. bromiianus, Sharp. P. egmontensis, 



P. constrictellus, P. irregularis, 



Doubtful. 



P. angustulus, ClifLudoir. P. politissinia, White. 



P. sylvaticus, P. pellax, Broun. 



P. vigil, White. 



Tliorax with five or six setce on each side. 

 P. catenulatus, Broun. P. insidiosus, Broun. 



P. mucronatus, 



Pterostichus. 



1780. P. cavelli, n.s. Elongate, slightly convex ; black, occa- 

 sionally tinged with red ; palpi pitchy-red. 



Thorax widest near the middle, as broad as long, much narrowed 

 behind, and distinctly sinuate before the acute, rectangular posterior 

 angles ; apex emarginate ; basal fossae large and elongate, medial 

 groove sometimes abbreviated, the disc faintly transversely striate. 

 Scutellum striate at base. Elytra elongate, curved laterally, apices 

 rounded ; their striae well developed and finely punctured. Two 

 lateral thoracic seta?. 



Although P. helmsi is very similar, according to description, this 

 species differs therefrom in having the elytral grooves distinctly yet 

 finely punctated ; the elytra are not at all acuminate, being, in fact, 

 rather broad behind ; the interstices have feeble impressions across 

 them. 



Length, 9J ; breadth, 3 lines. 



Boatman's, near Eeefton. It affords me pleasure to attach the 

 name of its discoverer (Mr. A. T. Cavell) to this species. 



1781. P, longiformis, n.s. (Sharp; Trans. Boy. Dub. Soc., 

 1886, p. 369.) Minor, angustulus subparallelus nigro-piceus, 



2 PT. v. 



