CANARIAN COLEOPTERA. 105 



The rather large size and glabrous surface of this Ptenidium (which 

 even beneath a high magnifying power is only just perceptibly punc- 

 tured, though minutely alutaceous) will at once distinguish it from 

 the two following species. It is apparently very local in, though 

 widely spread over, these islands. I have taken it sparingly in Grand 

 Canary ; at the Agua Garcia, in TenerifFe ; in Palma ; and (more 

 abundantly), at a low elevation, in the district of El Golfo, on the 

 western side of Hierro, — where, during February 1858, I captured 

 several specimens of it from beneath vegetable refuse in a sandy lane. 

 A single example is also now before me, which was found by Dr. Crotch, 

 during the spring of 1862, in Gomera. 



172. Ptenidium apicale. 



Ptilium apicale, Sturm, in litt. 



Tricliopteryx apicalis, Gillm., in Sturm, Deutsch. Fna, xvii. 85 (1845). 



Ptenidium apicale, Erich., Nut. der Ins. Deutsch. iii. 36 (1848). 



, Woll, Ins. Mad. 110 (1854). 



, Id., Cat. Mad. Col. 37 (1857). 



Habitat in Fuerteventura, Canaria, Teneriffa et Gomera, vidgaris. 



This common European insect (which abounds at Madeira) is pro- 

 bably universal in these islands, though hitherto I happen to have 

 myself observed it in only three of them, — namely, Fuerteventura, 

 Grand Canary, and TenerifFe. It has, however, been taken abun- 

 dantly in Gomera by Dr. Crotch. My Fuerteventuran specimens are 

 principally from the Rio Palmas, the Canarian ones from Teror, and 

 the Teneriffan ones from the vicinity of S'" Cruz, the Agua Garcia, 

 La Esperanza, &c. It may be known from the last species by its 

 rather smaller size and by its pubescent and distinctly pimetured 

 surface. 



173. Ptenidium punctatum. 



Scapliidium pimctatum, Gyll., Ins. Suec. iv. 293 (1827). 

 Ptenidiimi punctatum, Fairm. et Lab., Faun. Franq. 341 (1854). 



Habitat per oram maritimam Lanzarotee, sub fucis captum. 



The comparatively minute size, less convex and more oblong body 

 of this common European Ptenidium, combined with its coarser pu- 

 bescence and very much deeper punctuation (more particularly of the 

 prothorax), wiU readily distinguish it from both of the foregoing 

 species. It appears to be decidedly rare at the Canaries, — the only 

 two specimens which I have seen having been captured by myself, 

 from beneath marine rejectamenta, on the sandy sea-shore of Lanza- 

 rote, immediately to the south of xVrrecife. 



