Platynin^ 55 



is elongate, feebly ventricose, the hind body often notably elongate, 

 and the coloration of the upper surface is more striking and diversi- 

 fied than usual. The integument is rather solid and I have never 

 noticed any indication of the posterior elytral indentation alluded 

 to under Taphranchjis. The species may be separated and defined 

 in what appears to be a sufficiently effective manner as follows: 



Prothorax dark or at least concolorous 2 



Prothorax pale rufo-flavate in color l6 



2 — Species larger, never much less than 7-8 mm. in length 3 



Species notably small, rarely as much as 6.5 mm. in length 12 



3 — Basal foveae of the pronotum rather abrupt, very deep, separated 

 from the sides by a conspicuous smooth convex elevation. Rather 

 slender and convex, polished throughout and metallic above, the 

 anterior parts greenish, the elytra aeneous; under surface black, the 

 legs testaceous; head fully four-fifths as wide as the prothorax, with 

 large and prominent eyes, the anterior impressions short, deep, 

 irregular; antennae more than half as long as the body, piceous, the 

 basal joint above abruptly pale; the medial joints four times as 

 long as wide, the third barely shorter than the fourth; prothorax 

 about as long as wide, the sides finely reflexed, moderately and 

 evenly arcuate, becoming straight posteriorly, the angles obtuse 

 but with distinct tips; base feebly sinuate medially, as wide as the 

 rather deeply sinuate apex; surface with fine transverse rugulae 

 but nowhere punctate; anterior impression feeble, the stria fine but 

 rather broadly impressed; elytra evenly elongate-oval, with evenly 

 arcuate sides, two-thirds longer than wide and nearly twice as wide 

 as the prothorax, the sinus very feeble; surface convex; striae not 

 coarse, deep, grooved, coarser at apex, not distinctly punctulate; 

 intervals not quite flat, the third with six punctures; scutellar stria 

 long and deep as usual in this section; ninth stria half as far from the 

 margin as from the eighth; anterior male tarsi feebly dilated, 

 smooth above. Length (c^) 8.0 mm.; width 2.8 mm. New York 



(Lake Champlain) gaudens n. sp. 



A — Almost similar to gaudens but smaller and still narrower, black, 

 with greenish lustre throughout the upper surface, a little more 

 obscure on the elytra; eyes not quite so prominent; prothorax 

 narrower, somewhat longer than wide, the sides more sinuate 

 basally, the elevation between the foveae and the sides smaller 

 and feebler; elytra nearly similar, more rapidly rounded behind, 

 more than twice as wide as the prothorax; striae nearly smooth, 

 not fine and very deep, the intervals feebly convex. Length (cf ) 

 7.0 mm.; width 2.5 mm. New Jersey (Rutherford), — Wade. 



clientulus n. subsp. 

 Basal foveae not so abruptly formed, the external smooth elevation of 



the preceding not observable; elytra more oblong-oval 4 



4 — Sides of the prothorax more inflated and decidedly more rounded 



before the middle 5 



Sides of the prothorax more broadly and always moderately rounded.. .6 



