202 CANARIAN COLEOPTERA. 



clypeus is somewhat more pointed, and less recurved, at the apex, 

 and, tog-ether with the basal portion of the frontal process, more 

 rugosely sculptured ; whilst the gence (or the lateral rim of the head 

 which projects over either eye) are not quite so prominent, and the 

 prothorax of its female sex is rather less regularly rounded at the 

 sides (or more obliquely truncated anteriorly) : but these are points, 

 I imagine, of but slight impoi'tance in an insect so essentially variable. 

 T have taken the P. Silenus in Lanzarote and Fuerteventura (in 

 the latter of which islands it was also found by M. Hartung) ; and 

 it has been communicated by the Barao do Castello de Paiva from 

 Teneriffe. The females would appear to be very much scarcer than 

 the males ; for out of 16 specimens which I captured in the Rio 

 Palmas of Fuerteventura (from beneath the refuse of a camels' stable) 

 two only belong to the former sex. In Lanzarote (and probably in 

 the other islands likewise) it is called " Chamorro " by the inhabitants. 



Genus 133. ORYCTES. 



Illiger, Ktif. Prems. 11 (1798). 



319. Oryctes prolixus, n. sp. 



0. fere ut 0. Grypus, sed paulo minor, prothorace minore, elytris 

 parum longioribus (aut potius abdomine breviore), propygidium 

 vel fere vel omnino tegentibus, subtus densius pilosus ; clypeo in 

 rosteUum brevius, magis triangulare et plerumque magis recm'vum 

 producto ; genis aiitice minus jjorrectis, postice brevioribus, hand 

 ultra medium oculorum (nigrorum) ductis; prothoracis excavatione 

 (in maribus) latins pohtissima, postice utriaque argutius determi- 

 nata et ibidem impressione parva adjuncta profimdiore aucta, parte 

 media basali minus convexa necnon antice acutiore baud tridentata 

 (sed obsolete trisinuata necnon ad apicem, vix bipartitum, paulo 

 magis quam ad angulos laterales porrecta) ; elytrorum pimctis 

 versus seriem subsuturalem majoribus ; propygidio (necnon pygidio 

 in sexu masculo) midto magis pubescente grossiusque transversim 

 scrobinato.— Long, coi-p. lin. 13-15. 



Scarabaeus nasicornis, Bridle [nee Linn.'\, in Webb et Berth. (Col.) 60 

 (1838). 



Habitat in Teneriffa, Gomera et Hierro, rarissimus. 



The present Oryctes belongs to the same Section of the genus as 

 the European 0. Grypus, in which the anterior tibiae are 3-dentate, 

 the beak-Hke projection of the clypeus is comparatively small and 

 narrow, and the elytra are furnished along their hinder margin with 

 a narrow fringe of short yellowish hairs. Indeed it is closely aUied 

 to that species, though I believe undoubtedly distinct, — displaying a 

 number of small differential characters which I cannot detect in a)iy 



