MADEIRAN COLEOPTERA. 115 
332. Atlantis inconstans. 
Atlantis inconstans, Woll., Ins. Mad. 375 (1854). 
Inhabits Porto Santo, occurring in similar places as the last species. 
333, Atlantis mendax. 
Atlantis mendax, MWoll., Ins. Mad. 376 (1854). 
Inhabits Porto Santo, being tolerably common about the roots of 
plants on the sand-hills. 
334, Atlantis instabilis. 
Atlantis instabilis, Woll., Ins. Mad. 377 (1854). 
Inhabits Porto Santo, being found principally, beneath stones, on 
the rocky slopes and headlands at a rather higher elevation than the 
three preceding species. 
335. Atlantis excelsus. 
Atlantis excelsus, Woll., Ins. Mad. 378 (1854). 
Inhabits Madeira proper, abounding throughout the sylvan regions 
(especially towards the north of the island), and being occasionally 
found in open grassy spots beyond them. 
336. Atlantis Schaumii. 
Atlantis Schaumii, Woll., Ins. Mad. 379 (1854). 
Fore, Woll., Ins. Mad. 380 (1854). 
Inhabits Madeira and Porto Santo,—occurring in the former (so 
far as has been hitherto observed) only on the Ponta Sao Lourenco 
and (its detached extremity) the [lheo de Fora; and in the latter on 
the summit of the Pico do Castello, where it abounds beneath stones. 

Genus 134, OMIAS. 
(Germar) Schoén., Cure. Disp. Meth. 190 (1826). 
337. Omias ventrosus. 
Omias ventrosus, Woll., Ins. Mad. 882 (1854). 
Inhabits the mountains of Madeira proper, occurring beneath stones 
on the open grassy slopes. 
338. Omias enescens. 
Omias zenescens, Woll., Ins. Mad. 385 (1854). 
Inhabits Madeira proper, occurring in company with the last spe- 
cies, but much more rarely, This species approaches very closely to 
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