2 CANARIAN COLEOPTERA. 



sequaliter rotundato, per basin profunde sed parce pimctato necnon 

 etiam antice in medio pimctis perpaucis minoribns notato, postice 

 utrinqiie fovea magna impresso ; elytris depressis, profunde cre- 

 nato-striatis, stria tertia in singulo punctis quatuor aueta ; an- 

 tennis, palpis pedibusque (femoribus plus minus obscurioribus ex- 

 ceptis) testaceis vel rufo-testaceis. — Long. corp. lin. 2|-3. 



Habitat Teneriffam, rarissimus ; sub lapidibus humidis in mon- 

 tibus sylvaticis excelsis circa Agua Mansa tempore vernali captus. 



This interesting little Leistus, remarkable prima facie for its small 

 size and flattened surface, appears to be of the greatest possible 

 rarity, and confined (so far as I have observed hitherto) to the damp 

 sylvan regions, of a high elevation, in Teneriffe. I first captured it, 

 in May 1858, beneath moist stones at the Agua Mansa ; and subse- 

 quently (during May of the following year) in the same locality and 

 at the foot of the lofty Organo Rocks. 



Genus 3. NEBKIA. 

 Latreille, Om. Crust, et Ins. i. 225 (1806). 



3. Nebria dilatata. 



N. picea, latiuscula ; prothorace subcordato, ad latera late explanato 

 et valde reflexo, antice valde profunde emarginato, angulis anticis 

 valde porrectis acutiuscuHs ; elytris ellipticis, postice subacumi- 

 natis, alutaceis, subcrenato-striatis ; palpis, antennis pedibusque 

 clare ferrugineis. — Long. corp. lin. 6-6|. 



Nebria dilatata, DeJ., Spec. Gen. des Col. v. 580 (1831). 

 , Bridle, in Webb et Berth. (Col.) 58. pi. ii. f. 7 (1838). 



Habitat sub lapidibus humidis in montibus excelsis Teneriffse, 

 rarissima, inter 4000' et 6000' s. m. prsecipue degens. 



The superb Nebria v^hich I have redescribed above (and which 

 was wrongly stated by Dejean, in his ' Species Gen. des Coleopt.,' to 

 come from Madeira) appears to be peculiar to the lofty elevations of 

 Teneriffe, — where it occurs principally at the base of wet rocks and 

 near trickling streams from about 4000 to 6000 feet above the sea. 

 It is, however, extremely rare ; and, from its inhabiting ledges and 

 spots often all but inaccessible, very difficult to find. I first ob- 

 tained it, on the 30th of April 1859, in the ravines of the great 

 Pinal which clothes the ascent to the Cumbre adjoining the Canadas, 

 above Ycod el Alto ; and during the following month I met with it, 

 more abundantly, on the damp mountain-ridges around the Agua 

 Mansa and the Organo Rocks. 



