CEPHALODONTA. 125 



Elytra oblonga vel elongata, subcorivexa,dorso plerumque subdepressa, 

 angiilo postico spinosa vel inermia, apice rotimdata, truncata vol 

 irregulariter dentata ; humeris prominnlis. 



Pedes tibiis anticis maris ante apicem unispinosis. 



Corpus elongatum aut late elongatum. (Type, Cephalodonta spinipcs, 

 Fabr.) 



In Ceplialodonta I have combined the insects jjlaced by Chevrolat 

 and others in the genera Cephalodonta, Sceloenopla, and Micro- 

 donta. After a careful study of the group, I cannot find any certain 

 characters by which to sepai'ate them ; I have preferred, therefore, 

 making them sectional divisions of a single genus. 



A. Anteunanim articulis intermediis cylindi'icis aut vix compressis. 



a. Corpus robustum, dorso subconvexii'in ; antennis Jiliformihics, modice ro- 

 busfis ; elytris apice rofundatis aid oblique truncatis, atu/ulo jwsfico 

 obsolcto aut indistiticto ; pcdlbun robustis, plus niiausri' ekmgatis. (ScE- 

 i.CENOPLA, Chevr.) 



1. Antennas elongatse, articulis quatuor ultiniis brevibus. 



1. Cephalodonta spinipes (Fabr.). Tab. VIII. Fig. 8. B.M. 



Hispa spiuipes, Fabr. Ent. Si/sf. App. p. 448 ; Si/st. El. ii. p. 00. n. 8. 



Oliv. Ent. vi. p. 761. n. 4. pi. 1. fig. 4. 

 Sceloenopla spinipes, Dcj. Cat. edit. 3. 



C. snbelongata, postice paullo ampliata, convcxa, sanguinea ; elytris 

 apice (Tab. IX. fig. 6) rotundatis, integns, costatis, interspatiis 

 bifaiiam piinctatis ; nigris, maculis plurimis sanguineis ; maris 

 tibiis anticis s]")ina valida cnrvata armatis. 



Long. 6-7 lin. 



Hah. Cayenne ; Brazil. 



British Museum and most collections. 



This, which is one of the largest and most striking species in the 

 genus, is also the most common. It is the type of Chevi'olat's genus 

 Sceloenopla. 



2. Cephalodonta gigantea (Guer.). 



Chalepus giganteus, Guer. Icon, du Regne A)uni. Texte, p. 269. 

 Sceloeuopla aristocratica, Thorns. Rev. et May. de Zool. 1856, p. 478. 

 pi. 24. fig. 3. 



C . elongata, postice paullo ampliata, convexa, sanguinea ; elytris 

 apice rotundatis, integris, costatis, interspatiis bifariam piinctatis ; 

 nigris, maculis pluiimis sanguineis ; antennis valde elongatis ; 

 maris tibiis anticis spina conica armatis. 



Long. 9 lin. 



Hah. Cayenne. 



Unique in the cabinet of J. Thomson, Esq. 



