MADEIRAN COLEOPTERA. 109 
and by the palish hastate patch being continued to the extreme apex. 
It is apparently very rare, and confined to the sylvan districts of 
Madeira proper,—three specimens (two of which were captured in 
the Boa Ventura, and the other in the Ribeiro de Sao Jorge) having 
been taken by myself during the summer of 1855. 
304. Acalles Vau. 
Acalles Vau, Woll., Ins. Mad. 335 (1854). 
Inhabits Madeira proper, occurring in the sylvan districts of a 
high elevation. 
305. Acalles festivus, n. sp. 
A, oblongo-ovatus, squamis brunneis nigrisque lete pictus ; protho- 
race transversim vix setoso-tuberculato; elytris punctato-striatis, 
carinis interruptis nodulisque obscuris subsetosis instructis, figura 
V latissimaé communi postmedia (antice abrupte nigro-terminata, 
postice in apicem albidum suffusé), macula subscutellari et fascia 
antemedia obliqua fracta ornatis. 
Long. corp. lin, 2-21. 
A, oblong-ovate, densely and beautifully maculated with brown and 
black scales. Prothorawx a trifle longer, and less expanded at the 
sides, than in the allied species; and also less tubercular, or fasci- 
culated. Hlytra punctate-striated, and not quite so coarctate 
towards the apex as in the A. ornatus; with the interrupted ridges 
and nodules but slightly developed; and with a large, wide, acute, 
V-shaped postmedial patch, common to both (abruptly terminated 
in front by a dark portion of the surface, but usually completely 
confluent behind with the, likewise pale, apex), a suffused blotch 
about the scutellum, and a narrow, oblique, broken (sometimes 
obsolete) antemedial fascia, more or less brightly paler.. Limbs as 
in the other species, except that the tibize are apparently orna- 
mented by only a single darker rmg,—whereas in the nearly-allied 
A. ornatus they are generally bi-annulated. 
The beautifully, and rather brightly maculated surface of the pre- 
sent Acalles, the hinder portion of which (from the large and wide 
V-shaped patch with which it is ornamented being confluent poste- 
riorly with the pallid apex) is generally altogether pale, in conjunc- 
tion with its but slightly developed nodules, rather elongated pro- 
thorax, and apparently only one-ringed tibiz, will serve to distinguish 
it from its allies. Seven specimens of it have been lately detected in 
Madeira proper by Mr. Bewicke,—beneath the loosened bark of trees 
in a wooded ravine, immediately over the ridge to the westward of 
the D’Escalas bridge, beyond the Pico d’Arribentio. The example 
in the British Museum was presented by its captor. 
