Ptinida of the Canary Islands. 209 



more ferruginous ; in its head and prothorax (the latter of which is 

 more gibbous and convex, as also sub-binodulose and channeled, 

 on its disc) being more densely clothed with yellowish-white scales ; 

 in its elytra being more deeply punctured ; and in its limbs being 

 rather more scaly and robust. So far as 1 have observed hitherto, 

 it is peculiar to Lanzarote and Fuerteventura, and is excessively 

 rare. From the latter indeed I possess but a single specimen ; 

 but in the former I have taken it sparingly, at Ye, in the extreme 

 north of the island. 



Genus PiAKUs, nov. gen. (PI. VIII. fig. 7.) 



Corpus mediocre, elytris rotundato-ovalibus, parce squamosum 

 necnon pilis rigidis erectis ubique aequaliter vestitum, ap- 

 terum : oculis parvis, subrotundatis, prominulis : prothorace 

 subsequali, ad latera paulo rotundato : sculello parvo, tri- 

 angularis inter setulas aegre observando : elytris connatis : 

 metasterno brevi, aequali, postice (inter coxas posticas) facile 

 et leviter arcuato : abdominis segmento penultimo vix brevi. 

 Antenntje et instrumenta cibaria (7a, 7 b, 7 c, 7 d) fere ut in 

 Ptinidis typicis, sed mandibuUs (7 b) obtusius dentatis, versus 

 apicem internum obliquius subtruncatis (sed minus quam in 

 genere Casapo), Pedes fere ut in generibus prascedentibus, 

 articulis 4 basalibus (in utroque sexu) gradatim leviter decre- 

 scentibus. 



Obs. — Genus Nitpo et Sphcerico fere simile, sed species est 

 major et pilis rigidis erectis ubique densissime vestita, scu- 

 tello distincto triangulari, segmento penultimo abdominali 

 baud brevissimo, necnon mandibulis obtusius dentatis et 

 obliquius truncatis. Corpore sat magno et praesertim elytris 

 dentato-subfasciatis cum genere sequenti (saltem Piotcs in- 

 constans) melius congruit ; sed prothorax subaequalis est (nee 

 iiodoso-costatus), ad latera subasqualiter rotundatus, elytra 

 sunt sequalia (nee ad basin etiam obsolete subcostata, nee 

 ibidem densius setosa), labrum est paulo minus pilosum et 

 vix emarginatum, mandibulae sunt obtusius dentatae et magis 

 oblique truncatae, processus stipitis maxillaris est magis 

 quadrata, necnon tarsi in utroque sexu inter se non discedunt 

 (i. e. posticorum masculorum articulo basalari haud in- 

 crassato). 



A TTiapoc, pinguis. 



In external contour and size, though more especially in the 

 rigid pile with which its surface is beset, and the tendency of its 



VOL. I. THIRD SERIES, PART III. AUGUST, 1862. P 



