CARABIDAE FROM BURMA 355 



individuals from Palon do not differ from Chaudoir's description, 

 nor from an example of the same size from Siam (?) with which 

 I have compared it. The species comes exceedingly close to 

 T. chrysites, differing chiefly in the more rounded hind angles 

 of the thorax. The base of the thorax on each side differs also 

 in having only a very few punctures in the broad fovea, which 

 has also many strongly-marked transverse rugae. The sinistral 

 mandible has the same point and short transverse rugae across 

 its inner edge and coarse strigae above near the base as in 

 T. Lewisii. 



Euryaptus, nov. gen. 



Gen. Trigonotomae affinis. Brevior, oblongo-ovatus. Labrum 

 baud profunde arcuato-emarginatum. Antennae baud geniculatae 

 sed art. 1.™° 2-3 conjunctis subaequali. Caput sicut in Trigono- 

 tomis collo crasso; sulci frontales elongati, flexuosi. Palpi labiales 

 articulo apicali J' valde dilatato triangulari ; 9 elongato-trian- 

 gulari. Mentum breve, lobis latissime divaricatisi epilobis baud 

 salientibus. Elytra minus profunde striata, striola scutellari mi- 

 nima vel nulla; punctis discoidalibus nulhs. Metasterni epistema 

 elongata, angusta. Abdomen segmentis 3-5 basi transversim 

 sulcatis. 



A genus rendered necessary for the reception of several species 

 from S. E. Asia, differing greatly in facies and in minor points 

 of structure from Trigonotoma and Triplogenius, though agreeing 

 with them in essential group characters. 



224. Euryaptus nigellus, n. sp. 



Niger, partibus oris antennisque articulis basalibus obscure 

 rufis. Oculi prominentes. Thorax elytris parum angustior, relative 

 magnus quadratus, lateribus regulariter arcuatis, margine laterali 

 valde incrassato et reflexo, sulculo marginali profundo longe 

 ante basin desinenti, ibique lateribus explanatis, angulo postico 

 obtusissimo basi fere laevi, sulculo utrinque basali profundo et 

 extus fovea obsoleta. Elytra sat acute crenulatim striata, striola 

 scutellari brevissima obliqua, interstitiis fere planis, exterioribus 



