330 CANARIAN COLEOPTERA. 



ing the Canadas ; whereas the musicns, although ranging to an equal 

 elevation, descends to about 2000 feet above the sea. In my Paper 

 on these two Plintlu, I have stated that the P. velutinus " nearly re- 

 sembles the mnsicus ; nevertheless its much darker surface and almost 

 total freedom from additional decumbent seta3, as well as its nearly 

 obsolete elytral patches (which, luhen not obliterated, are reduced to 

 four small punctures, or spots), in conjunction with its sHghtly shorter 

 and broader rostrum (which is rather more distinctly widened at the 

 base, immediately in front of the eyes), its nearly tm^ninctured pro- 

 thorax, and the entire and less laterally-constricted apex of its more 

 feebly sculptiu'ed elytra, will readily separate it from that species." 

 And I may further add that its prothorax is a trifle more rounded 

 and produced, or less straightly truncated, at the apex (though not 

 so much so as is the case in the P. ciwuUiis) ; and that its elytral in- 

 terstices (when denuded of their scales) will be seen to be rather 

 more shining — being a Little less roughened, and consequently less 

 opake. 



520. Plinthus cucuUus, n. sp. 



P. inter musicum et velutinum aliquo modo situs, sed minor, rostro ad 

 apicem vix magis subito dilatato, prothorace (in disco minus evi- 

 denter biimpresso) densius punctato iiecuon antice in medio magis 

 rotundato-producto (nee truucato), elytris ad humeros paulo minus 

 porrectis (?'. e. vix magis obli(]ue truncatis). 



Cum musico colore general! elytrorumque interstitiis subopacis 

 rugulosis necnon femoribus antieis fortiter spinosis congruit ; sed 

 rostro breviusculo crassiusculo elytrisque ad ajiicem obtusis integris 

 velutinum potius simulat. — Long. corp. lin. S^. 



Habitat in montibus humidis Canariae Grandis ; die 21. Apr. a.d. 

 1858 exemplar unicum cepi. 



Having but a single example of this Plinthus to judge from, I 

 should have been disinclined to believe that the few peculiarities 

 which it presents were indicative of an additional species did not its 

 Jiabitat (in the laurel-districts of Grand Canary) render such a priori 

 probable. Although with many characters in common with them 

 both, it certainly does not accord with either of those just enumerated, 

 being in many respects indeed intermediate between the two. If the 

 individual now before me be a normal one, the P. cucullus seems to 

 differ from both of its Teneriifan allies in being a little smaller, with 

 its rostrum perhaps somewhat more suddenly dilated at its apex, with 

 its prothorax (which is less evidently impressed on its disc, on either 

 side of the keel) more thickly besprinkled with large punctures, and 

 more produced (or rounded) in the centre at its apex, and in its 



