MADEIRAN COLEOPTERA. 107 
where it is not much more setose than elsewhere. Elytra very 
deeply and regularly punctate-striated ; somewhat impressed at 
the base, in the region of the scutellum (which itself, however, is 
not visible); regularly rounded at the sides, the broadest part 
being about the middle; with the nodules and interrupted ridges 
very slightly developed,—those however at the base, between the 
central depression and the humeral angles, being the most so ; and 
with a broad, transverse, lunulate, postmedial patch, common to 
both, more distinctly pale,—the region between it and the apex 
being more evidently speckled with black than the rest of the 
surface. Antenne and tarsi short and ferruginous. emora and 
tibie much variegated with darker and paler rings. 
The single specimen from which the above description has been 
drawn out is the first Acalles which I have hitherto detected in 
Porto Santo. It was captured by myself by brushing the coarse 
herbage beneath a patch of stunted trees (almost the only ones in 
the island) near the ruins of the church of Nossa Senhora da Grace, 
above the town. Its exceedingly dappled, or rather irrorated, surface, 
in conjunction with its broad lunate postmedial patch, which extends 
almost across its (deeply striated) elytra, and the depression about 
the region of the scutellum, will immediately distinguish it from its 
allies, 
300. Acalles pulverulentus. 
Acalles pulverulentus, Woll., Ins, Mad. 333 (1854). 
Inhabits Madeira proper, occurring in rather low spots towards 
the coast. 
301. Acalles oblitus. 
Acalles oblitus, Woll., Ins. Mad. 333 (1854). 
Inhabits Madeira proper, occurring in similar places as the last 
species; and, like it, being exceedingly rare. 
302, Acalles nodiferus. 
Acalles nodiferus, Woll., Ins. Mad. 334 (1854). 
Inhabits Madeira proper, attaining its maximum within the sylvan 
districts at a high elevation. Whilst describing this species, in the 
Insecta Maderensia, I had but a single specimen, and that a rubbed 
female one, to judge from. In the summer of 1855, however, I de- 
tected three males amongst lichen on the trunk of an old tree in the 
upland region of the Fanal, and a fourth beneath the loosened bark 
of a felled Vinhatico immediately below the Encumeado of Sao 
Vincente ; and a male and two females have been lately communi- 
cated to me by Mr. Bewicke from the Ribeiro Frio, With this 
