191 



Observed hitherto only in Porto Santo, of the Madeiran Group, 

 where moreover it is of the utmost rarity, occurring beneath stones 

 on the rocky mountain-slopes. It is the only member of the Ela- 

 teridce which has been detected in the Madeiran archipelago. 



542. Coptostethus crassiusculus. 



Coptostethus crassiusculus, WolL, Cat. Can. Col. 213 (1864). 

 Habitat Canarienses (Can.), in intermediis editioribusque rarissimus. 



A very variable Copostetlius which inhabits the intermediate and 

 lofty elevations of Grand Canary, occurring sparingly beneath stones. 



543. Coptostethus brunneipennis. 



Coptostethus brunneipennis, WolL, Ann. Nat. Hist. xi. 218 (1863). 

 , Id., Cat. Can. Col 210 (1864). 



Habitat Canarienses (Ten., Gom.,Palma,Hierro}, sub lapidibus rarior ; 

 praecipue in intermediis et editioribus (rarissime in inferioribus) 

 occurrens. Species valde inconstans. 



A Canarian insect, which has been observed in Teneriffe, Gomera, 

 Palma, and Hierro, occurring for the most part at intermediate 

 and rather lofty (but now and then even in the lower) altitudes. It 

 is eminently inconstant, the whole of its characters (though never 

 simultaneously) being more or less subject to variation ; and in three 

 examples now before me, which were taken by the Messrs. Crotch 

 (while sifting fallen leaves) at a high elevation on the mountains of 

 Gomera, the elytra are somewhat more rounded (or widened) before 

 the middle, but I cannot see anything about them to constitute a 

 specific difference. 



544. Coptostethus gracilis. 



Coptostethus gracilis, Woll., Cat. Can. Col. 211 (1864). 



Habitat Canarienses (Ten.), prascipue in montibus valde elevatis sub 

 lapidibus parce degens. Usque ad 9000' s. m. ascendit. 



Likewise Canarian, and observed only (hitherto) in the higher 

 altitudes of Teneriffe where it attains its maximum on the exposed 

 elevated Cumbres from about 8000 to 9000 feet above the sea. It 

 occurs beneath stones, in company with the C. globulicollis, but 

 much more sparingly; and although it is evidently allied to the 

 (very inconstant) brunneipennis, I nevertheless do not believe that 

 it can possibly be regarded as any small and narrow modification of 

 that insect. 



