Atlantic Coleoptera. 243 
equally to necessitate that step.* I may just state, 
however, that without a sufficient series to judge from it 
is highly probable that collectors will hereafter be found, 
from time to time, who perhaps may feel inclined to 
reinstate the 7’. Wolfii as distinct; yet 1 nevertheless 
cannot see how any line of specific demarcation is to be 
drawn between any of the examples now before me,— 
even though some of them may have their prothorax a 
little more widened before the middle than others, and 
present at first sight a somewhat different aspect. The 
greater or less rufescence of the callosities however is in 
reality more apparent than real, and depends upon the 
amount of scales and sete with which they happen to be 
clothed,—for even the most concolorous individuals when 
denuded of the latter will be seen to have their elytra 
obscurely maculated. 
Apart from all other points of similarity, the compara- 
tively brown hue and oblong-squarish, posteriorly trun- 
cated outline, and densely scaly surface of the whole of 
my fifty examples give a character to the 7’. rugosus, in 
all its phases, which when once seen it is impossible to 
mistake. The following, I may add, is the corrected 
synonymy of the species as now elucidated :— 
(Sp. 854) Tarphius rugosus. 
Tarphius rugosus, Woll., Ins. Mad. 144 (1854) ; Id., 
Cat. Mad. Col. 48 (1857); Id., Col. Atl. 124 (1865) ; 
Tarphius Wolff, Id., Ibid. 123 et App. 21 (1865). 
Hab.—Maderenses (Mad.) ; in castanetis longe supra 
urbem Funchalensem, precipue inter 1700’ et 2000° 
S. m., parce occurens. fT 
* Considering how closely allied to the T. truncatus I regarded the T. 
Wolfiii, when I had an opportunity (in 1865) of comparing the latter with 
my original types now in the British Museum, it may yet be open to 
inquiry whether the truncatus also should not be treated eventually as a 
variety, or state, of the rugosus. 
+ Before dismissing the Madeiran Tarphii I may just call attention to 
the fact that, during a two months’ residence on the mountains above 
Funchal—in January, February, and March of 1870—we met with the 
T. Wutulentus and nodosus in profusion, as well as, though less abundantly, 
the rugosws and compactus; and the same district produced a few ex- 
amples of the very rare and interesting T. angustuius. A little later in 
the season a sojourn of two months at 8. Antonio da Serra, on the 
mountains in the east of the island, afforded us the T. echinatus—a 
