tlie Coleopterous Family EiotyUdoe. (17) 393 

 Trapezidera. 



Mots. Schrenck Reise, ll. 244 (typ. angusticollLs, Mots.). 



Antennae with a 5-jointed club, 3rd joint scarcely longer tlian 

 4th; thorax very elongate, base margined, deeply sinuate on each 

 side, the margiual line nearly straight, thus leaving a produced 

 triangle in front of the scutellum ; elytra separately rounded at the 

 base, the apex rounded, denticulate; no coxal line; head without 

 stridulating plate, with a lateral impressed line between the eyes. 



Trapezidera prolongata, sp. n. 



Elongata, postice angustata, tota senea, nitida, ubique subtilissi- 

 me alutacea, parce bubtiliter punctidata, elytris obsolete subseriatim 

 punctulatis. L. 9 lin. 



Nicaragua. 



var. ? mexicana. Smaller, thorax hai'dly visibly, elytra more 

 strongly punctulate. L. 7 lin, 



Mexico. 



Trapezidera chalcea, sp. n. 



T. jjrolougatce affinis, sed minus elongata, humeris latioribus, 

 postice acuminata, thorace basi fere truncato (in medio producto), 

 sat crebre punctulato; elytris punctatostriatis, interstitiis crebre 

 punctulatis; pedibus plus minusve £eneo-rutis. L. 6 — 7 lin. 



Mexico. 



Trapezidera aenea, sp. n. 



Elongata, senea, postice acuminata, thorace elongato-quadrato, 

 crebre punctulato, basi utrinque sinuato, medio paulo producto, 

 sti'iola abbreviata utrinqiie impresso; elytris crebre punctatis, 

 seriebus punctorum vix distiuctis; abdomine subtus rufo-seneo. 

 L. 6—6-1- liii. 



Mexico. 



Differs by the broader form, acuminate behind, and the basal 

 stria on the thorax ; the mediaa lobe is very little marked. 



Trapezidera angusticollis.* 



Trapezidera angustkolUs, Mots. Schrenck Reise, ii. 244. 

 Central America. 



Trapezidera brunnipes.* 



Trapezidera hrunnipes, Mots. Schrenck Reise, ii. 244. 

 Central America. 



Trapezidera longicollis.* 



Trapezidera. longicolUs, Mots. Schrenck Reise, ir. 244. 

 Nicavagua. 



