CANAHIAN COLEOPTERA. 49 



as the Feronia canariensis, Brulle, I am enabled to state for certain, 

 —having received several of his specimens, thus identified, from Dr. 

 Heer. 



(Subgenus Haptoderus, Cliaud.) 



78. Pterostichiis angularis. 



P. piceus ; prothorace subquadrato, antice rotundato-ampliato postice 

 angustiore, angulis ipsissimis posticis subaciitis, margine lateral! 

 incrassato, postice subsinuato, fortiter canaliculato et basi utrinque 

 linea valde profunda impresso ; elytris ellipticis, striatis, inter- 

 stitio tertio punetis duobus maguis notato, ad apieem ipsum (in 

 utroque sexu) plus minus vel conjunctim truneatis vel singulatim 

 emarginatis ; antennis, palpis pedibusque rufo-piceis. 



Mas major, latior, nigro-piceus, nitidus, convexus ; elytris profunde 

 striatis, interstitiis convexis ; pedibus robustis. 



Fvem. paulo minor, angustior, rufo-piceus, (eapite nitido excepto) 

 opacus, subdepressus ; elytris minus profunde striatis, interstitiis 

 depressis, per suturam (prassertim postice) elevatis ; pedibus minus 

 robustis. — Long. corp. lin. 4-5^. 



$. Calathus angularis, Brn'le, in Webb et Berth. (Col.) 56 (1838). 

 <5'. Feronia cauarieusis ?, Brulle, in Webb et Berth. {Col.) 56 (1838). 



Habitat sub lapidibus in sylvaticis TenerifFae, hinc inde sat vulgaris. 



Were it not for the relative dilatation of the tarsi and, still more, 

 for the fact that I have repeatedly taken them in coitu, the extra- 

 ordinary dissimilarity of the sexes of this curious Pterosticlius might 

 almost have led to the idea that they vfere specifically distinct. And 

 as such indeed, judging from his very meagre and unsatisfactory diag- 

 nosis, I believe that M. Brulle did absolutely regard them, — describing 

 (unless I am much mistaken) the female under the name of Calathus 

 angularis, and the male under that of Feronia canariensis ! At least, 

 after a careful consideration of his " diagnoses " (if such they may 

 be called), I can come to no other conclusion ; and, in partial accord- 

 ance with this hypothesis, I have lately received from M. Chevrolat 

 a supposed " type " of the C. angularis, which is undoubtedly the pre- 

 sent insect. It is certain therefore, if M. Chevrolat's type can (as I 

 have every reason to believe) be relied upon, that the species now 

 under consideration is, at all events, M. Brulle's C. angularis ; and 

 the only question that remains is, whether it be not his Feronia 

 canariensis likewise. Before critically examining it, I had considered 

 the preceding species (the P. longulus) as the F. canariensis of Brulle ; 

 but this was simply through the fact of my having received it (a few 

 years ago) thus identijied from Prof. Heer. On looking closely how- 

 ever into M. Brulle's list of Canarian Coleoptera, it is quite evident 



