the Coleopterous Family Erotylidw. (17) 393 

 Trapezidera. 



Mots. Schrenck Seise, ii. 244 (typ. angusticollis, Mots.). 



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

 4tli ; 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, w^ith a lateral impressed line between the eyes. 



Trapezidera prolongata, sp. n. 



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

 me alutacea, parce subtiliter punctulata, elytris obsolete subseriatim 

 punctulatis. L. 9 lin. 



Nicaragua. 



var. 1 mexicana. Smaller, thorax hardly visibly, elytra more 

 strongly punctulate. L. 7 lin. 



Mexico. 



Trapezidera chalcea, sp. n. 



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

 postice acuminata, thorace basi fere truncate (in medio produeto), 

 sat crebre punctulato; elytris punctatostriatis, interstitiis crebi-e 

 punctulatis; pedibus plus minusve seneo-rufis. L. 6 — 7 lin, 



Mexico. 



Trapezidera aenea, sp. n. 



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

 crebre punctulato, basi iitrinque sinuato, medio paulo pi'oducto, 

 striola abbreviata utrinque impresso; elytris crebre pimctatis, 

 sex-iebus punctorum vix distinctis; abdomine siibtus rufo-seneo. 

 L. Q—Q^ lin. 



Mexico. 



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

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



Trapezidera ang-usticollis.* 



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

 Centi'al America. 



Trapezidera bninnipes.* 



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

 Central America. 



Trapezidera longicoUis.* 



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

 Nicai'agua. 



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