MADEIRAN COLEOPTERA. 103 
which is unusually convex) is very much coarser and more dense, 
whilst its elytra (which are almost entirely free from any metallic 
lustre, and are subrugulose) are in most instances more evidently 
striated and punctured than is the case in any of the preceding 
states. 
281. Caulotrupis impius. 
Caulotrupis impius, Woll., Ins, Mad. 311 (1854). 
Inhabits Madeira and the two Southern Dezertas, being extremely 
rare in the former (from whence I have hitherto seen only a single 
specimen, detected by Mr. Leacock), but abounding on the Dezerta 
Grande,—where it infests the stalks of the Silybum Marianum, Grtn. 
(the Holy Thistle of the ancients). I captured a single example on 
the summit of the Southern Dezerta, on the 7th of June 1855, 
282. Caulotrupis terebrans. 
Caulotrupis terebrans, Woll., Ins. Mad. 312. tab. vi. f. 8 (1854). 
Inhabits Porto Santo,—towards the summits of the peaks, Ex- 
ceedingly rare. 
283. Caulotrupis Chevrolatii. 
Caulotrupis Chevrolatii, Woll., Ins. Mad. 313 (1854). 
Inhabits Madeira proper, occurring in the damp sylvan districts 
(principally beneath logs and chippings of wood) at a high elevation. 
284. Caulotrupis opacus. 
Caulotrupis opacus, Woll., Ins. Mad. 315 (1854). 
Inhabits Madeira proper, in similar spots as the last species, but 
scarcely ascending to quite so lofty an altitude. 
285. Caulotrupis conicollis. 
Caulotrupis conicollis, Woll., Ins. Mad, 314 (1854). 
Inhabits Madeira and the Dezerta Grande, attaining its maximum 
from about 1600 to 2000 feet above the sea. On the latter island 
the specimens (var. 8) are a little less pyriform than in Madeira 
proper, their elytra being rather less expanded in the middle. 
Genus 120. CAULOPHILUS. 
Wollaston, Ins. Mad. 315, tab. vi. f. 4 (1854). 
