MADEIRAN COLEOPTERA. 35 
Fam. 8. PTILIADZ. 
Genus 41, ACRATRICHIS, 
Motschulsky, Bull. de la Soc, Imp. de Moscou, xxi, 569 (1848). 
98. Acratrichis umbricola. 
Acratrichis umbricola, Woll., Ins. Mad. 108 (1854). 
Inhabits the moist sylvan districts of Madeira proper, occurring 
beneath fallen leaves at a lofty elevation. Since the publication of 
the Insecta Maderensia, I have had the advantage of Mr. Haliday’s 
opinion on this large Acratrichis ; and considering the great attention 
which he has paid to the Péliade, the following note respecting it 
will not be regarded as out of place. “The A. umbricola,” says he, 
“‘is a fine and very distinct species, and seems to come nearest to 
the atomaria, I think, of all our British forms, rather surpassing it 
in its most peculiar characters,—viz. convexity, breadth of thorax, 
elongated hind angles of the latter, and silken pubescence.” 
99. Acratrichis fascicularis. 
Latridius fascicularis, Hbst, Kaf. v. 8. t. 44. f. 7 (1793). 
Trichopteryx fascicularis, Heer, Fna Col. Helv. i. 874 (1841). 
erandicollis, Erich., Nat. der Ins. Deutsch. iii. 20 (1848). 
Acratrichis fascicularis, Woll., Ins. Mad. 108 (1854). 
Inhabits Madeira proper, occurring beneath leaves and other vege- 
table refuse at low and intermediate altitudes. 

100. Acratrichis pumila. 
Trichopteryx sericans, Gillm., in Sturm, Deutsch. Fra, xvii. 52 (1845). 
pumila, Erich., Nat. der Ins. Deutsch. 11. 22 (1848). 
Acratrichis pumila, Mots., Bull. de la Soc. Imp. de Moscou, xxi, 568 
(1848). 
—— ——, Woll., Ins. Mad. 109 (1854). 
Inhabits Madeira proper, occurring in similar spots as the last 
species. 

101. Acratrichis obsccena, n. sp. 
A, oblonga utrinque subacuta depressiuscula, subtiliter pubescens 
nigra, prothorace elytrorum latitudine, angulis posticis acutis, 
elytris pectore parum longioribus, abdomine multo brevioribus, 
antennis breviusculis basi piceis, palpis femoribus coxisque piceis, 
tibiis tarsisque testaceis. 
Variat (immatura) pedibus fere totis et antennarum articulis primo 
et secundo testaceis, elytris fusco-testaceis apice pallidioribus. 
Long. corp. lin. }~vix }. 
Trichopteryx obsccena, Haliday, in litt. 
D2 
