tJie Atlantic Cossonidcs. 371 



vix convexis ; pedibus piceis, tibiis subciirvatis, tarsoruin 



articulo teitio distincte dilatato-bilobo ; antennis piceo-feriu- 



gineis, capitulo ovali. 

 a. protborace valde profunde punctato, elytris sat profunde 



punctato-stiiatis, interstitiis depressiuscuh's. [Insula Lan- 



zarote.] 

 /3. protborace vix densius leviusque punctato, elytris panic pro- 



fundius punctato-striatisj interstitiis paulo magis convexis. 



[Insula Fuerte Ventura.] 

 Long. Corp. lin. Is — vix 2. 



Habitat insulas Lanzarote et Fuerteventura Canarienses, in 

 ramis Euphorbiarum eniortuis vulgatisoimus. 



Tbe present PJilceophagus lias a just perceptibly different piiasis 

 for tbe islands of" Lanzarote and Fuerteventura respectively (tbe 

 specimens from tbe former baving tbeir elytra a trifle less densely 

 sculptured and witb tbe interstices more depressed, and tbeir pro- 

 tboracic punctures perbaps somewbat larger and more remote) ; 

 nevertbeless tbey agree in everytbing essential, and more espe- 

 cially in tbeir obsolete scutellum — it being barely possible to catcb 

 a glimpse of it even beneatb tbe bigbest power of tbe microscope 

 (vvbere, bovvever, it may occasionally be just detected in tbe form 

 of a minute transverse plate). Tbe P. cauUum, moreover, bas 

 its tibiae less straigbtcned tlian in tbe following species (tbougb 

 tbey can scarcely be called flexuose) ; tbe tbird joint of its tarsi is 

 very distinctly expanded and bilobed, and its limbs are a trifle 

 sborter and darker tban is tbe case in tbe P. laurineus. It occurs 

 in Lanzarote and Fuerteventura (tbe two eastern islands of tbe 

 Canarian Arcbipelago), wbere it would seem to be peculiar to tbe 

 decayed Euphorbia-stems, and wbere it was taken abundantly by 

 Mr. Gray and myself in January, 1858, and subsequently by 

 myself in Marcb, 1859. It may often be seen crawling up tbe 

 wbitewasbed walls in tbe villages and towns ; bat, as tbe greater 

 part of tbe fuel used for burning is composed of dried busbes of 

 tbe various Eupborbias, vvbicb may frequently be observed piled 

 in beaps near tbe bouses, I bave but little doubt tbat sucb speci- 

 mens are accidental ones, transported from tbeir proper habitats. 

 In compiling tbe above diagnosis I bave inspected closely seventy- 

 tbree examples. 



9. Phlccophagus laurincns, n. sp. 

 P. nigro-piceus ; protborace valde profunde punctato ; scutello 

 distincto, triangulari ; elytris sub-olongis, valde profunda 



