CANARIAN COLEOPTEEA. 603 



prothorace transverso-quadrato antice paiilo angustiore, angulis 

 posticis argute subrectis, in disco postico longitudinaliter bifoveato 

 iiecnon utrinque versus latera (subreeurvo-explanata) profunda 

 impresso ; abdomine nitidissimo, subtilissime et paree punctulato ; 

 antennis longiusculis, versus basin rufo-ferrugiueis ; pedibus sa- 

 turate rufo-testaceis. — Long. corp. lin. l^l^. 



Habitat in locis aliquanto elevatis TenerifFae et Palmar, rarissimum. 



This Homalium has much the general aspect, colour, and sculpture 

 of the common European H. rivulare ; but it is considerably smaller, 

 and rather more closely, finely, and sharply punctured ; its head is 

 narrower and less transverse ; its prothoracic foveas are more deeply 

 impressed ; its abdomen is very much more shining, being free from 

 the alutaceous sculpture which is so conspicuous in that insect ; and 

 its antenna) are a little slenderer. It seems to be very scarce, and 

 confined to intermediate and rather lofty elevations. I have taken 

 it, from beneath small stones, in an open basaltic cavern at the base 

 of the Organo Rocks (in the sylvan region above the Agua Mansa) 

 in TeneriiFe, and (more sparingly) in the district of the Banda in 

 Palma. 



928. Homalium pusillum. 



II. angusto-lineare, valde dejiressum, opacum, alutaceum punctulisque 

 levissimis minutis in jirothorace elytrisque parce irroratum, nigro- 

 piceum ; capite brevi, triangulaii, basi (ad ocellos) breviter bifoveo- 

 lato ; prothorace transverso-quadrato postice paulo angustiore, an- 

 gulis posticis argute subobtusis, anticis rotundatis, in disco postico 

 longitudinaliter bifoveato necnon utrinque versus latera late im- 

 presso; antennis (brevibus, compactis) pedibusque rufo-testaceis. — 

 Long. corp. lin. 1. 



Omaliuni pusillum, Grav., Hon. 205 (180G). 



. Steph., m. Brit. Ent. v. 353 (1832). 



, Erich., Gen. et Spec. Staph. 879 (1839). 



-, Kraaiz, Nat. der Ins. Deutsch. ii. 988 (1856). 



Habitat Teneriffam sylvaticam ; sub cortice Pini canariensis cujus- 

 dam laxo ad Agua Mansa exemplar unicum collegi. 



I can see nothing to separate the single specimen now before me 

 from the European H. pusillum, except that the prothorax has its 

 fovese rather deeper, and, together with the elytra, is a trifle more 

 distinctly punctured ; and consequently, as such differences (which 

 are merely in degree, and not in kind) are scarcely "\\'orth noticing, 

 I have referred it without hesitation to that species. The example 

 from which the above diagnosis has been compiled I captured at the 

 Agua Mansa in Teneriffe, from beneath the loosened bark of a felled 

 Finns canariensis. 



