130 GEO. H. HORN. M. D. 



strongly arcuate, strongly constricted at base, surface smooth, median line rather 

 deeply impressed, subapical impression feeble, a few coarse punctures along the 

 base, especially near the hind angles, which are rectangular. Elytra oval, humeri 

 rounded, surface moderately deeply striate, the strise crenately punctured, inter- 

 vals very slightly convex, the sutural interval behind the middle and the lateral 

 margin of the elytra ferruginous. Body beneath smooth, shining, iridescent. 

 Legs pale yellowish testaceous. Length .24 inch : fi mm. (PI. 4, fig. 1.) 



Ii is not without some hesitation that I sive this species a name. The 

 description of *S. intercepta Chaud. from Yucatan, fits very accurately 

 the species before me. but being rather a comparative than a didactic 

 description it is impossible to ascertain. 



One 9 specimen from Texas. I have seen another in the cabinet of 

 Mr. Ulke. 



PL,.4.TYXIIS Bon. 



1*? quadriniacillatus n. sp. - -Rufo-testaceous, sides of abdomen pice- 

 ous, head black, elytra black with a large humeral spot confluent with that on the 

 opposite side, another very little smaller near the apex. Head oval, eyes distant 

 from the thorax, surface subopaque. finely alutaceous, a few punctures near the 

 occiput. Thorax somewhat eordiform, a little longer than wide, narrower at base, 

 apex feebly emarginate, base truncate, sides in front arcuate, posteriorly sinuate, 

 hind angles rectangular but not prominent, an extremely narrow reflexed margin, 

 disc very slightly convex, basal impressions shallow but nearly reaching the mid- 

 dle, median line fineh- impressed, surface subopaque, alutaceous, very sparsely 

 finely punctate. Elytra oval, broader behind, humeral angles much rounded 

 (body feebly winged), striate, striae obsoletely punctured, intervals flat, alutaceous, 

 dorsal punctures three, on the third interval close to the third stria. Body beneath 

 more shining than above, almost entirely smooth. Metasternal episterna moder- 

 ately long. Tarsi slight!}- hairy on the upper side, without tarsal grooves. Length 

 .30 inch ; 7.5 mm. PI. 5, fig. 2./ 



Female. — Tarsi slender, fourth joint scarcely emarginate. Last ventral with 

 three setae each side at apex. 



I place the very pretty species above described in Platynus for want 

 of knowledge of a better place. While all the essential characters are 

 those of that genus, the slightly hairy upper side of the tarsi is at vari- 

 ance, this in connection with the style of coloration makes the species 

 rather an anomaly in the genus. The general form of body and the 

 long basal impressions of the thorax are very like some of the apterous 

 Platyni I'e. g. Jejunus). The male might give some additional charac- 

 ters and lead to the formation of a new genus, which I suppo.><e will have 

 to be done. 



I have seen but one specimen kindly sent me by Dr. John Hamilton, 

 of Allegheny, collected by Mr, Klage-^ " Feb. 1^7, 1881, under the bark 

 of a fallen gum tree near Owensburgh, Ky." (banks of the Ohio, near 

 Louisville.) 



