PLATYNIN.E 79 



closely and should be included under the same generic head. We 

 have two species as follows: 



Upper surface shining, moderately convex, black, with brownish-metallic 

 lustre on the elytra; under surface black, the abdomen partially 

 rufescent, the epipleura and legs obscure testaceous, the tarsi some- 

 times nearly black; head slightly elongate, four-fifths as wide as the 

 prothorax, with well developed and prominent eyes; antennae long, 

 slender, black, with more piceous base, three-fifths as long as the 

 body, the third and fourth joints equal; palpi slender, black, with 

 pale tip, the last joint somewhat longer than the third; prothorax 

 small, very nearly as long as wide, convex, parallel, with strongly, 

 very evenly and circularly rounded sides from apex to base, the 

 angles broadly rounded; base not quite as wide as the moderately 

 sinuate apex, the apical angles rather sharply defined; impressions 

 obsolete, the stria extremely fine; foveae small, elongate-punctiform, 

 at the basal margin, externally feebly prolonged by reflected light 

 for a short distance; scutellum very small; elytra two-fifths longer 

 than wide, about twice as wide as the prothorax, rather evenly 

 rounded in nearly apical half, the humeri rapidly rounded; surface 

 of each with a large feeble vague impression at about the middle 

 of the disk, the sinus long, very feeble; striae very fine, minutely 

 punctulate, the intervals flat, the three punctures of the third 

 small and feeble, the first near the third, the other two near the 

 second, stria; scutellar stria rather long but very fine; met-episterna 

 twice as long as wide; anterior male tarsi very feebly dilated. 

 Length (cf 9 ) 5-7-6.5 mm.; width 2.15-2.6 mm. Rhode Island to 

 Indiana aeruginosa Dej. 



Upper surface even more polished than in the preceding and of a deeper 

 black, without trace of the brownish lustre of that species; under 

 surface deep black, shining, the epipleura and legs obscure, though 

 clear, testaceous; body narrower and rather smaller in size; head 

 slightly narrower, elongate, more evidently narrower than the 

 prothorax, the eyes and antennae nearly similar; prothorax similar 

 but rather more evidently shorter than Avide and with the foveae 

 still a little smaller and less clearly defined, the base more distinctly 

 narrower than the apex, both finely beaded; elytra narrower and 

 longer, fully one-half longer than wide, about twice as wide as the 

 prothorax, rather more evidently widest slightly behind the middle, 

 rounding in nearly apical half, with similarly very shallow sinus ;_ 

 surface with somewhat more pronounced medial indentation on 

 each, the striae extremely fine, with the punctulation very minute, 

 the intervals flat; lateral line of punctures more interrupted medially; 

 three dorsal punctures extremely small and feeble; anterior male 

 tarsi only just visibly dilated. Length (cf 9) 5.2-6.2 mm.; width 

 1.8-2.35 "irri- North Carolina (Southern Pines), — Manee. Six- 

 teen specimens, perfectly uniform in lustre and coloration, as are 

 also the fifteen specimens of cBruginosa at hand undulata n. sp. 



The singular indentation at the central part of each elytron, is 



