OPATRID^E. 415 



Likewise found in Madeira proper, but at quite low elevations. 

 Indeed the only spot in which I have met with it hitherto is, at the 

 sea-level, close to the little town of Porto da Cruz (on the eastern 

 coast) where I captured it in profusion beneath stones. It was 

 named after the Barao do Castello de Paiva, to whose researches in 

 Madeira I have often been indebted for much interesting material. 



1143. Hadrus cinerascens. 



Hadrus cinerascens, Dej., Cat. (edit. 3) 214 (1837). 



, Woll., Ins. 'Mad. 503, tab. xi. f. 4 (1854). 



, Id., Cat. Mad. Col. 156 (1857). 



Habitat Maderenses (Mad., Illieo Chao, Des., Bugio), sub lapidibus 

 ubique vulgatissimus. 



One of the most abundant of the Coleopterous insects of the Ma- 

 deiran Group, to which it seems to be peculiar. It occurs from the 

 sea-level to the summits of the peaks (being most common, however, 

 at rather low elevations), and is found in all the islands except Porto 

 Santo where its place is taken by the H. illotus. 



1144. Hadrus illotus. 



Hadrus illotus, Woll., Ins. Mad. 503, tab. xi. f. 6 (1854). 

 f Id., Cat. Mad. Col 156 (1857). 



Habitat Maderenses (P to S to ), sub lapidibus in inferioribus interme- 

 diisque abundans. 



As already stated, this Hadrus seems to be the Porto- Santan 

 representative of the H. cinerascens, which abounds on all the other 

 islands of the Madeiran Group. And such being the case, one can 

 scarcely resist the inquiry whether it is not in reality an insular 

 modification of that species. It is certainly possible that this may 

 be so ; nevertheless the fact that the cinerascens remains constant on 

 the various other islands (and adjacent rocks) would render it a priori 

 unlikely that it should have become permanently altered in Porto 

 Santo. 



Genus 344. HALONOMUS. 

 Wollaston, Ann. Nat. Hist. vii. 201 (1861). 



1145. Halonomus salinicola. 



Halonomus salinicola, Woll., loc. cit. 203 (1861). 

 Id., Cat. Can. Col. 490 (1864). 



Habitat Canarienses (Lanz., Can.), sub lapidibus in locis salinis hinc 

 inde vulgatissimus. 



