MADEIRAN COLEOPTERA. 159 
crenate-striated ; the interstices with the hinder tubercles very 
distinct. Limbs pale rufo-ferruginous. 
This well-marked Helops may be at once recognized from the 
remainder here enumerated, by its depressed body, piceous and almost 
opake surface, by its rather lightly striated elytra (the interstices of 
which are almost free from punctures, and are but slightly rugulose), 
and by its comparatively pale limbs. In its posteriorly narrowed 
(or sinuated) prothorax it approaches the H. Vulcanus ; but in general 
affinity it is more allied, I think, to the Porto-Santan HH. infernus 
than to any of the other species. Three specimens of it have been 
lately communicated by Mr. Mason, by whom they were captured at 
Sao Vincente (in the north of Madeira proper); and who has pre- 
sented one of them to the British Museum collection. 
458. Helops lucifugus. 
Helops lucifugus, Woll., Ins. Mad. 518. tab. xii. f. 5 (1854). 
Inhabits Porto Santo; occurring beneath stones at most eleva- 
tions, though especially towards the mountain-tops, 
459. Helops congregatus. 
Helops congregatus, Woll., Ins. Mad. 518, tab. xii. f. 6 (1854). 
Inhabits Madeira and the two Southern Dezertas ; occurring, prin- 
eipally, in the crevices of the rocks at a rather lofty elevation, 
460. Helops futilis. 
Helops futilis, Wol/., Ins. Mad. 520. tab. xii. f. 7 (1854). 
Inhabits Madeira and the two Southern Dezertas, occurring at 
rather low and intermediate altitudes. A more intimate acquaintance 
with this species, since the publication of the Insecta Maderensia, 
has convinced me that it is more variable in stature than I there 
indicated, many of the specimens attaining 41 lines in length, 
The colour of the elytra, also, is somewhat inconstant,—the tendency 
being to become darker in that region, than on the head and pro- 
thorax. The examples, however, from the Dezertas and the east of 
Madeira proper are usually altogether rufo-ferruginous. 
461. Helops Portosanctanus. 
Helops Portosanctanus, Woll., Ins, Mad, 521. tab, xii. f. 9 (1854). 
Inhabits Porto Santo, abounding beneath stones at a low elevation. 
