158 MADEIRAN COLEOPTERA, 
Fam. 52. HELOPIDA. 
Genus 193. HELOPS. 
Fabricius, Syst. Ent. 257 (1775). 
453. Helops Vulcanus. 
Helops Vuleanus, Woll., Ins. Mad. 513. tab. xii. f. 1 (1854). 
Inhabits Madcira and the three Dezertas; congregating between 
the fissures of the rocks, and beneath stones, towards the coast. 
454. Helops confertus. 
Helops confertus, Woll., Ins. Mad. 515. tab. xii. f. 2 (1854). 
Inhabits Madeira proper; occurring bencath stones, and the 
loosened bark of trees, at all elevations. In the higher regions it is 
generally more lightly sculptured than it is in the lower ones. 
455. Helops Pluto. 
Helops Pluto, Woll., Ins. Mad. 516. tab. xii. f. 3 (1854). 
Inhabits the mountains of Madeira proper ; occurring from about 
3000 feet above the sea to the extreme summits of the peaks. 
456. Helops infernus. 
Helops infernus, Woll., Ins. Mad. 517. tab. xii. f. 4 (1854), 
Inhabits Porto Santo (and the adjacent islands) ; occurring, beneath 
stones, at low and intermediate altitudes. 
457. Helops subdepressus, n. sp. 
H. oblongo-ovatus depressus piceus subopacus confertissime punctu- 
latus, prothorace amplo ad latera basin versus sinuato (angulis 
posticis rectis), elytris vix punctulatis aut rugulosis, leviter 
crenato-striatis, interstitiis apicem versus scriatim tuberculatis, 
antennis pedibusque lete rufo-ferrugineis. 
Long. corp. lin. 4. 
H, oblong-ovate, depressed, more or less brightly piceous, and nearly 
opake. Head and prothorax most closely, and rather roughly, 
punctured: the latter large, widest about (or a little before) the 
middle, where it is rounded; and with the sides sinuated behind, 
—causing the posterior angles to be right angles. Hlytra scarcely 
perceptibly punctured, and but very slightly rugulose, lightly 
