the Atlantic Cossonides. 365 



lateil aiit! externally-simple tibife being sufficient of itseil" to re- 

 move it' from the whole of those sub-Riiyncoiihorous groups; 

 whilst in its enormously thickened antcnuEe, small capitulum, and 

 the excessively shortened second-joint of its funiculus (which is 

 nearly lost within the enlarged basal one), as well as in its very 

 prominent and perfectly rounded eyes (which arc remote from the 

 anterior edge of the prothorax), and the small si)ine with which 

 the inner apex of its tibiae is armed, it presents a combination of 

 features essentially its own. Nevertheless, with the exception, 

 perhaps, of the Slcnoscclis fujlasloidcs,* from the Cape (jf Good 

 Hope, it probably makes a nearer approach to the various mem- 

 bers of the Ili/lcsinldce than any other truly Curculionidcous genus 

 hitherto described ; and may correctly, therefore, in conjunction 

 with Stenoscelis, be placed at the very commencement of the 

 Cossonides. 



1. Erenwtcs cra.ssicornis, Brulle. (PI. 18, fig. 1.) 



E. ater, subnitidus; rostro parce punctulato, fronte convexa. 

 et fovcola minuta (plus minus, canaliculiformi) inipresso; 

 prothoracc profunde punctato (punctis magnis ct versus 

 latera confertissimis), ad latcra paulo rotundato ; elytris 

 profunde j)unctoto-striatis, interstitiis convexis et minute 

 seriatim punctulatis, niox ante apiccm utiinque plicato-sub- 

 constrictis ; antennis pedibusque nigro-piceis, illarum capi- 

 tulo ferruginco. 

 Long. Corp. \in.2 — vix 2^. 



Habitat sub cortice laxo necnon in trunois putridis J*ini cana- 

 riensis in locis elevatis insularum Cannria, Tenerifta ct Palnia, 

 bine inde rarior. 



Hylargus crassicornis? Brulle, Webb & Berth. Hist. Nat. 

 des iles Can. 71 (1839). 



This singular insect appears to subsist exclusively under the 

 loose bark and in the rotten wood of the Pimis canaricnsis, in the 

 old (and often inaccessible) I'inals of the Canary Islands. It j)ro- 

 bably occurs wherever the Finals still remain ; though, from tiic 

 excessive difficulty of exploring the remote serras and mountain- 

 slopes on which they are princip;dly situated, I have myself, 

 up to the present time, only observed it above San Bartolomao (in 

 the district of Tarajana), of Grand Canary, at the Agua Mansa of 

 Teneriffe, and in the Barranco above Santa Cruz of Palma. It 

 will doubtless be found, equally, in Gomera and Hierro ; though 



• Vide " Jouinal of F.iitomoiogy," i. pi. XT., fig. 1 (1861). 



