366 COMOOI'TKRA. 



behind, posterior angles rectangular, base tiimcate, apex slightly emar- 

 ginate, lateial rims well developed ; disc smooth, mesial groove well marked 

 l)ut hardly attaining the base or apex ; basal region distinctly punctate, 

 its fossae apparently duplicate, the outer without a defoiite external plica, 

 the inner broader and forming a depression towards the central groove. 

 Scutellum triangular, rather small. Elytra elongate-oval, widest before 

 the middle, a good deal narrowed posteriori}'', almost thrice the length of 

 thorax, only sUghtly wider than it is at the base ; their finely yet distinctly 

 punctate striae are deeper near the suture than at the sides ; interstices 

 slightly convex, the 3rd generally tri])unctate, subapical ])]i(-ae slender. 



The narrow head, inc()ns])icuous eyes, feebly developed basal plicae, and 

 almost duplicated fossae of the thorax distinguish this species from all that 

 are known as yet. 



Length, 71 mm. ; breadth, quite 2 nun. 



Routeburn. Hollyford, and Mount Earnslaw. Five during February, 

 1914; also about a dozen from more southern localities of Z. snhopacus 

 (3689) were found by Mr. T. Hall. 



3809. Tarastethus convexus sp. nov. Tarastethus Sharp, Man. N.Z. 



Coleopt., p. 1003. 



Convex, moderately short and broad, nitid ; piceo-castaneous, the head, 

 thorax, base, and suture of elytra nu)re rufescent ; lateral margins and 

 apices of elytra, and the legs, pale flavo-castaneous ; antennae, tarsi, and 

 palpi more or less fulvescent. 



Head moderately elongate and, including the only shghtly convex eyes, 

 rather narrower than the thoracic apex, with a few fine punctures in the 

 elongate frontal impressions. Thorax subcordate, nearly a third broader 

 than long, widest near the middle, well rounded and margined there, rather 

 strongly siimously narrowed towards the rectangidar posterior angles, base 

 truncate, apex slightly emarginate ; n\esial groove not attaining either base 

 or apex and somewhat expanded behind, the whole basal region moderately 

 closely punctate, the fossae neither very deep nor sharply defuied. Elytra 

 more convex than thorax, almost thrice its length, but. owing to the 

 curvedly narrowed shoulders, but little broader than it is at the base, their 

 sides obviously rounded, with refiexed margins, they are evidently broader 

 than the thorax in the middle, somewhat sinuously narrowed and indis- 

 tinctly margined behind ; their striae are rather deep near the suture, less 

 so towards the sides, all rather strongly punctured ; interstices a little 

 convex, more or less (confluent behind, the 8th ])licate. 



This comes near Sharp's T. puncticolli.s (1799), but the head is narrower 

 and impunctate along the middle, the eyes are rather smaller and less 

 convex, the hind-body is more oviform, and the outer striae are more 

 shallow and irregular, and the coloration is altogether dissimilar. 



cj. Length, 5 mm.; breadth, 2 mm. 



Routeburn, north of Lake Wakatipu. Two examples found on the 13th 

 February, 1914, by Mr. T. Hall. 



3810. Tarastethus diversus sp. nov. 



Shining, nearly similar in colour to T. convexus, but the thorax more 

 nigrescent ; the body more elongate and much less convex. 



Head rather narrower than front of thorax, smooth, labrum distinctly 

 emarginate ; eyes unusually small, slightly convex. Thorax only a sixth 



