CANARIAN COLEOPTEKA. 03 



96, Trechus flavolimbatus. 



T. niger, nitidus ; prothoracc transverse svibquadrato postice paulo 

 angustiore, angulis ipsissimis posticis miiiutissime prominulis, basi 

 utrinqiie leviter foveolato ; elytris oblongo-ovalibus, subdepressis, 

 limbo plus minus flavo-testaceo, striatis (striis vix suberenatis, ex- 

 terioribus obsoletis) ; antennis uigro-fuscescentibus, ad basin rufo- 

 testaceis ; pedibus pallido-testaceis, tibiis plus minus obscuriori- 

 bus. — Long. Corp. lin. l^lf . 



Trechus flavoliiubatus, Schaum, in litt. 



, Woll, Ann. Nat. Hist. (3rd series) xi. 216 (1863). 



Habitat in Canaria, Teneriffa, Gomera, Palma ct Hierro, vulgaris. 



Very closely related to the Madeiran T. Jlavomarginatus, of which 

 indeed I had regarded it as a mere geographical state until Dr. Schaum 

 drew my attention, lately, to one or two small characters which I had 

 overlooked. This induced me to examine the insect more critically ; 

 and I now agree with him that, however nearly allied to it, it un- 

 doubtedly cannot be referred to that species. It may at once be 

 known from \he jlavomarginatus by its larger and more prominent 

 eyes ; by its prothorax being a trifle convexer, with much shallower 

 fovejfi on either side at the base, and with its hinder angles just per- 

 ceptibly more obtuse; and by its elytra being flatter, a little less 

 rounded at the sides (or more oblong), Avith their extreme humeral 

 angles considerably less acute, and with their strite (the outer ones 

 of which are subobsolete) altogether more lightly impressed. 



The T.jlavolimhatas is universal in all the islands of the archi- 

 pelago, except Lanzarote and Fuerteventura, — in which I have not 

 observed it, and where I believe it does not exist ; but in Grand 

 Canary, TenerifFe, Gomera, Palma, and Hierro I have taken it, in 

 greater or less profusion. In Teneriffe, Gomera, and Palma it was 

 also met with by Dr. Crotch. Though more abundant within the 

 sylvan regions than elsewhere, it is found at nearly all elevations, 

 and wherever there are dead leaves, or other vegetable refuse, for it 

 to secrete itself beneath ; nevertheless there is good reason for sus- 

 pecting that many of the open districts in which it is common were 

 once densely wooded, and that in such spots it may be but the ex- 

 ponent of a fauna which has mainly disappeared. In Teneriffe it 

 was also captured by the BarSo do Castello de Paiva. 



97. Trechus felix, n. sp. 



T. nitidus, rufo-piceus (rarius piceus) ; sulcis frontalibus valde cur- 



vatis, profundis ; prothoracc subquadrato-cordato, angulis posticis 



ipsissimis acute prominulis ; elytris obovatis, depressis, limbo (prai- 



sertim ad apiccm) necnon sutuni postice obscure pallidioribus, pro- 



