24 CANARIAN COLEOPTERA. 



of Avhich situations I have observed it plentifully at the Salinas in 

 the extreme north of Lanzarote, as also around Arrecife, and at Ber- 

 rugo in the extreme south ; whilst, in Fuerteventura, it is common 

 in sandy places near Puerto de Cabras. 



37. Masoreus alticola, n. sp. 

 M. nigro-piceus, sat distinete (oculo armato) alutaceus ; prothorace 

 paulo minus trans verso, postice in medio distinctius longitudinaliter 

 striguloso sed hand impresso, canalicula centrali profunda Integra ; 

 olytris subrotundatis, leviter crenato-striatis, ad basin plus minus 

 indistincte rufeseentioribus ; antennis, palpis pedibusque testaceis ; 

 femoribus posticis breviusculis ; unguiculis conspicue denticulatis. 

 — Long. Corp. lin. ''2-'2\. 



Habitat in elevatis humidis Teneriffoe, prsesertim sylvaticis, usque 

 ad 8000' s. m. ascendens. 



Were it not for its completely opposite habits, I should certainly 

 have confounded the present Masoreus with the last one ; nevei'thcless, 

 warned by the very decided differences in their modes of life, I have 

 lately overhaiiled the two insects most carefully, and feel perfectly 

 satisfied that, however near they may approach each other at first 

 sight, they are in reality distinct*. The M. alticola is, on the ave- 

 rage, perhaps a trifle smaller and less alutaceous than its ally ; its 

 prothorax is rather narrower, or less transverse, not so convex on its 

 disk, less impressed in the centre behind (where moreover the longi- 

 tudinal rugce are much more conspicuous), and also more deeply 

 channeled (the channel extending from the extreme base to the 

 apex) ; its elytra are just perceptibly rounder at the sides, with their 

 striae perhaps more evidently crenulated, and usually a little less 

 rufescent towards their base ; its hinder femora are somewhat 

 shorter ; its legs paler ; and its claws, unless I am mistaken, are 

 rather more powerfully denticulated. In this last respect, indeed, 

 it is coincident with the European M. Wette.rhalii ; but, apart from 

 other differences, its alutaceous and less shining surface, in con- 

 junction with its obscurer colour, unchanneled scutellum, and totally 

 opposite habits, will at once separate it from that insect. 



The 31. alticola appears to be peculiar to the lofty districts of 

 Teneriffe, where it occurs in damp sylvan spots in the vicinity of 

 small streams and wet rocks. I have taken it sparingly on the 

 mountains above the Agua Mansa, as also in the ravines of the Pinal 



* I am glad also to be able to state that, after examining them (recently) with 

 great care, such was likewise the ultimate opinion of Dr. Sehaum, — though (as in 

 my own case) he was not able at first sight to apl^reciate their differences. 



