Ooleoptera from Chontalcs. 207 



Steirasioma albiceps, n. sp. — 8. senex similis, elytris 

 apice magis angustatis, nee truneatis ; singulatim in spina 

 valida terminatis ; capite cano, genis nigris ; elytris 

 ochreo-fuscis, lateribus vitta trilobata fusco-nigra, loba 

 Ima longe ante, 2ndo poae medium, 3ia multo minori 

 prope apicem ; antennis (c?) articulo 3io vix curvato 

 intus nee dentieulato. 



Long. 9 lin. ^ . 



One example, in Mr. Belt's collection. Very closely 

 allied to St. senex and melanogenys, both of which have 

 truncated elytra, and denticulated third antennal joint. 

 In the shape of the apex of elytra it agrees with St. 

 ccBnosa, but diflPers widely in colours, in the three-lobed 

 black lateral stripe, &c. 



Acanthoderes inquinatus, n. sp. — Robustus, postice recte 

 attenuatus, ochreo-fuscus, griseo et nigro parum variega- 

 tus, elytris plaga vaga obliqua a humeris usque ad medium 

 disci exteusa, maculaque triangulari communi infra scu- 

 tellum, griseo-albis, pone medium fascia abbreviata valde 

 flexuosa nigra ; antennis ( <$) corpore triente longioribus 

 simplicibus, articulo 3io sequenti quarta parte longiori, 

 lOmo quam 9o et llmo multo breviori, barbate; thorace 

 dorso tuberibus duobus grossis conicis, et carina dorsali 

 fortiter elevata ; elytris sub-brevibus, trigonis, apice bre- 

 viter sinuato-truncatis, angulo exteriori longe spinoso, 

 dorso carina centro-basali elongata, paulo curvata, et pluri- 

 tuberculata; antennis et pedibus griseo et nigro-fusco 

 variegatis ; mesosterno bituberculato, antice verticali. 



Long. 6^-9 lin. ^ ? . 



? . Elytris minus trigonis, apice latius sinuato-trun- 

 catis. 



Many examples. 



Acanthoderes circumflexus, Duval, in De la Sagra's Hist, 

 de Cuba, Insectes p. 270. — This is a widely distributed 

 species ; common in Cuba, Venezuela, New Granada, 

 Guatemala, and Mexico. Some of the examples from 

 Chontales are very large. However much the species may 

 vary in size or markings, the short and broad undulated 

 white fascia is always visible a little below the shoulder 

 of each elytron, and extending to the disc. The two 

 apical joints of antennae are formed as in A. inquinatus. 



Long. 4-7^ lin. 



