390 Transactions. 



Group Feronidab. 



3175. Trichosternus wallacei sp. nov. Trichostenius Chaudoir, Man. N.Z- 



Coleopt.. p. 31. 



Oblong, slightly convex, moderately nitid; black, elytral margins 

 faintly viridescent, legs and antennae rufo-piceous, tips of palpi rufes- 

 cent. 



Head smooth, frontal foveae elongate, with 2 setigerous punctures 

 alongside each eve and the same number on the forehead ; labrum trans- 

 verse, feebly emarginate. Eyes prominent. Thorax subquadrate, a 

 third broader than long, the apex widely incurved, base medially emar- 

 ginate, lateral margins moderately thick; it is a little broader before 

 the middle (in some examples hardly at all) than elsewhere, gently 

 rounded towards the front, nearly straight behind, posterior angles 

 exactly rectangular; the median sulcus does not reach the apex, and is 

 slightly expanded behind; the basal fossae, situated between the middle 

 and sides, are large, somewhat prolonged laterally, so that the 'pace 

 near each angle seems flattened. Scutellum striate at base. Elytra with 

 dentiform shoulders, just perceptibly broader than thorax at the base, 

 their sides slightly curvate, with well- developed margins, moderately 

 sinuate-angustate near the extremity; their striae are well marked, and 

 become deeper and wider towards the sides and apices, but are rather 

 indefinitely punctured; interstices plane on the middle, convex near the 

 extremity and sides, the 3rd and 5th generally slightly broader than 

 those near the suture, the former tripunctate, the 7th with 5 punctures. 



Femora moderately slender; intermediate tibiae with slightly pro- 

 minent hind angles; tarsi rather slender; the basal four joints of the 

 anterior only moderately dilated. 



Underside glossy black, almost quite smooth; the apex of the terminal 

 ventral segment quadripunctate in both sexes. 



Female. — Elytral striae very finely but rather more distinctly punc- 

 tate than in the male. 



I have seen a dozen specimens; sometimes there are 4 punctures on 

 the 3rd interstices and I on the 5rd, but otherwise they are homogeneous 

 and vary but little in size. The only similar species is T. hanmerensis 

 (2631). 



Length, 21-23 mm. ; breadth, 8-8£ mm. 



Wairiri, Seaward Kaikouras. It is with pleasure that I name this 

 species after its discoverer, Mr. W. L. Wallace. 



3176. Pterostichus hamiltoni sp. nov. Pteroslichus Bonelli, Man. N.Z. 



Coleopt., p. 31. 



Suboblong, narrowed medially, only slightly convex, shining; black, 

 the tibiae, tarsi, and antennae piceo-rufous, palpi paler. 



Head, including the prominent eyes, rather narrower than front of 

 thorax, almost quite smooth, with elongate frontal impressions. Thorax 

 wiriest at the middle, regularly rounded from the obtuse anterior angles 

 to beyond the middle, and from thence considerably, and somewhat 

 sinuously, narrowed towards the well-defined rectangular posterior angles ; 

 it is quite a third broader than long; the apex is deeply, the base slightly 

 medially, incurved; the basal fossae are deep, rather elongate, distinctly 

 separated from the sides and more widely from the middle, the mesial 

 groove does not reach the apex, the surface is nearly smooth. Scutellum 

 strongly seriate at the base. Elytra more than double the length of 

 thorax, a good deal, yet gradually, nan-owed towards the base, the 



