CANAETAN COLEOPTERA. 83 



sparingly, in Palma. The " var. /j " I have only observed at a some- 

 what higher elevation, — having obtained eleven examples of it in the 

 ravines of the lofty Pinal above Ycod el Alto, during May 1859. 



Genus 44. CYBISTER. 

 Curtis, Brit. Ent. iv. 151 (1827). 



130. Cybister africanus. 



Cybister africanus, Laporte, Etud. Ent. 99 (1834). 



Trochalus meridionalis. Gene, De qidh. Ins. Sard. i. 10 (1836). 



Cybister africanus, Aube, Hydrocanth. 71 (1838). 



Habitat Canariam Grandem, in aquis quietis ad Arguiniguin mense 

 Aprili A.D. 1858 deprehensus. 



The G. africanus, of southern Europe and northern Africa, appears 

 to be both local and scarce in these islands, — the only spot in which 

 I have observed it hitherto being at Arguiniguin, in the south of 

 Grand Canary ; where, on the 14th of April 1858, 1 captured several 

 specimens of it in the pools, or small freshwater lakes, close to the sea- 

 Genus 45. DYTISCUS. 

 Linnaeus, Syd. Nat. ii. 604 (1767). 



131. Dytiscus circumflexus. 



Dytiscus circumflexus. Fab., Syst. Eleu. i. 258 (1801). 



, Aube, Hydrocanth. 113 (1838). 



Dyticus circumflexus, Bndle, in Webb et Bei^th. (Col.) 58 (1838). 



Habitat ? 



The European D. circimijiexus (which is recorded also from Algeria 

 and Barbary) is admitted as Canarian by M. BruUe, on the evidence 

 of examples assumed to have been captured by Messrs. Webb and 

 Berthelot. I have not myself met with it in these islands; but 

 since there is no reason why it should not occur there, and since I 

 have examined the specimens of Messrs. Webb and Berthelot, in 

 Paris, which appeared to be correctly identified, I think perhaps that 

 the insect should be included in our present fauna. Nevertheless 

 I cannot but feel a slight hesitation in admitting it, seeing that 

 several of the very few species supposed to have been collected by 

 Messrs. Webb and Berthelot leave a doubt on my mind as to whether 

 or not they were really obtained at the Canaries at all. As to the 

 precise island in which the specimens were professedly found, M. 

 Brulle, of course, gives us no information. 



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