212 Mr. T. Vernon WoUaston on the 



with which its prothorax and the base of its elytra are embossed 



( though in the latter position they are but just traceable, and 



may be regarded as obsolete), the present genus brings us back 

 attain to Casapus, with which we commenced this descriptive enu- 

 meration of the Canarian Piinidce. Nevertheless it differs essen- 

 tially from that group, since it not merely wants the curious 

 excavation at the apex of the labial palpi, and the very obtuse, 

 obliquely truncated mandibles which are there so conspicuous; 

 but, amongst other differences, its body is smaller, much more 

 densely clothed, and ww-polished, its upper-lip is more pilose, and 

 its posterior coxae are somewhat more distant. In fact, although 

 assuming the two above-mentioned peculiarities of Casapus (and 

 they are most significant ones), it has evidently a greater affinity 

 with the last genus, — to which in external contour and size, no 

 less than in the subdentate fasciae with which its elytra are adorned, 

 and the stiff erect hairs with which it is everywhere beset, the 

 Grand Canarian P. inconslans (which I regard as the type) makes 

 a most decided approach ; nevertheless its costate pronotum and 

 the subcostate base of its elytra, in conjunction with its undis- 

 tinguishable scutellum, its more pubescent and emarginated upper- 

 lip, its acuter mandibles (at all events of the P. inconstans^, which 

 are constructed like those of the ordinary Ptinidce, the longer and 

 narrower process of its maxillary stipes and the incrassated Jirst- 

 joint of the hinder tarsi of its male sex, will at once separate it from 

 Piarus. 



S 1. Corpus squamosum et seiosum ; mandihulis apice aculis (ut in 

 Ptinis typicis). 



13. Piotes inconstans, n. sp. (PI. VIII. fig. 8.) 



P. nigra vel piceo-nigra; capite prothoraceque dense flavescenti- 

 cinereo-squamosis, hoc postice leviter 4-nodoso-costato ; ely tris 

 ovalibus, striato-punctatis, subnitidis, pilis plus minus rigidis, 

 plus minus erectis, plus minus elongatis, plus minus dense 

 obsitis, fasciis duabus magnis dentatis [sc. sub-basali et 

 postmedia] necnon apice albidis (plus minus distinctis vel 

 inter se suffusis) ornatis ; antennis pedibusque robustis, fer- 

 rugineis, squamosis. 



a. elytris setulis brevibus subdemissis dense tectis, fasciis ple- 

 rumque sat distinctis. 



(j. [vide fig.] elytris pilis rigidis longiusculis erectis dense tectis, 

 fasciis plerumque sat distinctis. 



y. lanata [an species vera ?] elytris pilis mollibus valde elongatis 



