146 MADEIRAN COLEOPTERA. 
it as specifically identical with them,—there being no appreciable 
difference whatsoever between the Madeiran and Swiss specimens, 
unless it be that the latter are perhaps, if possible, even a trifle 
smaller than the former (though scarcely perceptibly so). Moreover 
the habit assigned to it by Heer, “ad dolia cellarum,” is much in 
accordance with its habitat in Madeira,—it being on the damp and 
dirty walls of old houses, which had been long shut up and un- 
tenanted, that I discovered it in the summer of 1855. It was indeed 
in the “ Pilgrims’ House” at 8. Antonio da Serra that I first met 
with it,— where it was tolerably abundant, crawling out of the 
crevices of the wainscot and white-wash, in company with the My- 
cetea hirta, Calyptomerus dubius, and such-like insects of a cellar- 
and house-infesting tendency. 
If I am right (as I have but little doubt that I am) in regarding 
the preceding species as the true Cryptophagus atomus of Gyllenhal, 
it will be at once seen by a reference to the diagnosis that Heer’s 
Pithophilus atomarius is totally distinct therefrom, and that conse- 
quently the European Catalogues are wrong which register the two 
as specifically identical. 
Fam. 45. CLAMBIDA. 
Genus 175. CALYPTOMERUS. 
Redtenbacher, Fna Austr. 159 (1849). 
Calyptomerus may be readily known by its minute, pubescent 
body, remarkably short and posteriorly rounded prothorax, and by 
its exceedingly broad, enormously developed head, which is produced 
into an angle (at which the eye is situated) on either side, and which 
it has the power of bending inwards, and applying closely to its pro- 
sternum,—when (its legs being retracted) it has the appearance, 
though less so than the Clambi and Agathidia, of a rounded ball. 
Its antenns, which are implanted at the sides of the head (consider- 
ably in front of the eyes), in an incision of the margin of the 
clypeus, are composed of ten joints, the first and second of which are 
enlarged, the third to the eighth narrow, and decreasing in length, 
whilst the ninth and tenth form an abrupt bi-articulated club. Its 
upper lip is small, and concealed beneath the clypeus ; its mandibles 
are acute and cleft at their apex ; its maxille elongate and bilobed , 
and its maxillary palpi have their second joint incrassated, and their 
terminal one long and cylindrical. I have received some very in- 
teresting notes on the characters of this curious little genus from 
Mr. Haliday, whose accurate powers of observation render them 
