MADEIRAN COLEOPTERA. 203 
the base than towards the apex). Legs dark-piceous ; with the 
tarsi pale yellowish-testaceous. 
The deep-black hue of the present Trogophleus, the feet alone 
(although the entire limbs are slightly diluted in colouring) being 
pale-testaceous, in conjunction with its short antenn, almost im- 
punctate (though rugulose) head, and the deep longitudinal fovex on 
its hinder prothoracic disk, give it a character which it is impossible 
to mistake. A solitary specimen (now in the British Museum) was 
captured by myself in the island of Porto Santo (at the edges of the 
small stream at the Zimbral d’Areia) during the spring of 1855. 
574. Trogophleus corticinus. 
Oxytelus corticinus, Grav., Mon. 192 (1806). 
, Oliv., Encycl. Meth, viii. 416 (1819). 
Trogophleeus corticinus, Hrich., Gen. et Spec. Staph. 809 (1839). 
nanus, Woll., Ins. Mad. 611 (1854). 



Inhabits Madeira proper; occurring in damp, muddy spots at in- 
termediate elevations. Rare. The 7. nanus of the Insecta Made- 
rensia appears, upon a further acquaintance with it, to be identical 
with the European 7’. corticinus,—as indeed has been lately pointed 
out to me by Dr. Kraatz. It is the smallest and narrowest of the 
Madeiran species hitherto detected, with the exception of the 7’. sim- 
plicicollis ; and it may be readily known by its densely, and almost 
equally, punctulated head and prothorax, by the four shallow sub- 
obsolete fovere on the hinder disk of the latter, and by its antennze 
being concolorous,—their base being scarcely at all more diluted in 
colouring than their apex. 

575. Trogophleus simplicicollis, n. sp. 
7. angustus niger subopacus, capite prothoraceque minutissime 
equaliter punctulatis, hoc simplici (haud foveolato), elytris pree- 
sertim apicem versus plus minus dilutioribus, antennis gracilibus 
fusco-piceis, basi pedibusque piceo-testaceis. 
Long. corp. lin. 2-1. 
7. minute, narrow, black, sub-opake, and delicately pubescent. 
Head and prothorax closely, minutely, and equally punctulated all 
over: the latter subquadrate-cordate, and perfectly even,being 
free from any indications of foveee. Hlytra more or less diluted in 
colouring, especially posteriorly ; and more coarsely punctured 
than the head and prothorax. Antenne rather slender, and fusco- 
piceous ; their base, and the legs, piceo-testaceous. 
The very minute size and narrow outline of the present insect, in 
conjunction with the entire freedom of its prothorax from any trace 
