196 MADEIRAN COLEOPTERA. 
the Praya Formoza near Funchal,—where a specimen was captured 
by Professor Heer in February 1851, and from whence a second has 
been lately communicated by Mr. Bewicke. 
Genus 229. MECOGNATHUS. 
Wollaston, Ins. Mad. 595. tab. xiii. f. 8 (1854). 
556. Mecognathus Chimera. 
Mecognathus Chimera, Woll., Ins. Mad. 595. tab. xiii. f. 8 (1854). 
Inhabits Madeira proper; occurring, beneath stones and logs of 
wood, throughout the forest-districts of intermediate and lofty 
elevations. 
(Subfam. 5. STENIDES.) 
Genus 230. STENUS. 
Latreille, Précis des Caract. Gen. des Ins. 77 (1796). 
§ 1. Abdomen marginatum : tarsi articulo quarto simplice. 
557. Stenus guttula. 
Stenus guttula, Mhill., in Germ. Mag. iv. 225 (1821). 
——, FErich., Gen. et Spec. Staph. 691 (1859). 
—— ——, Heer, Fna Col. Helv. i. 214 (1841). 
—— ——., Woll., Ins. Mad, 597 (1854). 

Inhabits Madeira and Porto Santo; occurring amongst shingle at 
the edges of the streams at most elevations, and being rarer in the 
latter island (where I first detected it during the spring of 1855) 
than in the former. 
558. Stenus providus. 
Stenus providus, Erich., Kaf. der Mark Brand. i. 546 (1837). 
, td., Gen. et Spec, Staph. 707 (1839). 
—— ——, Heer, Fna Col. Helv. i. 217 (1841). 
—— ——, Woll., Ins. Mad. 598 (1854). 


Inhabits Madeira proper; occurring in similar spots as the last 
species, but much less abundantly. The Madeiran specimens of this 
insect are a trifle larger and more robust than is“commonly the case 
in more northern latitudes; their legs also are a shade darker, and 
their palpi usually entirely pale,—even at the apex: nevertheless in 
all their essential characters they entirely agree with the ordinary 
European type. 
