14 MADEIRAN COLEOPTERA. 
altitude of 4000 to 5000 feet, and harbouring principally beneath the 
loose outer fibre of the Hrica arborea and scoparia, Linn. 
31. Olisthopus elongatus. 
Olisthopus elongatus, Woll., Ins. Mad. 38 (1854). 
Inhabits, sparingly, the mountains of Madeira and Porto Santo,— 
ranging lower than either of the preceding species, and descending 
occasionally to almost the level of the sea. In Porto Santo I have 
only taken it within the fortress on the extreme summit of the Pico 
do Castello. It occurs also in the Canary Islands, having been cap- 
tured by M. Hartung in Lancerota. 
Genus 15. ARGUTOR. 
(Megerle) Steph., IW. Brit. Ent. i. 102 (1828). 
32. Argutor robustus. 
Argutor robustus, Woll., Ins. Mad, 40 (1854). 
Inhabits the mountains of Madeira proper, occurring beneath stones 
and fallen leaves,—particularly in the pine-woods of intermediate ele- 
vations. 
33. Argutor gracilipes. 
Argutor gracilipes, Woll., Ins. Mad. 41 (1854). 
Inhabits the mountains of Madeira proper,—descending, however, 
on the northern side of the island to the level of the shore. 
34. Argutor dilaticollis. 
Argutor dilaticollis, Woll., Ins. Mad. 42 (1854). 
Inhabits the mountains of Madeira proper, attaining its maximum 
in the damp sylvan districts towards the north of the island. 
35. Argutor curtus. 
Argutor curtus, Woll., Ins. Mad. 43 (1854). 
Inhabits the mountains of Madeira proper, occurring principally 
in the moist ravines, and ranging perhaps somewhat lower than the 
three preceding species. 
Genus 16. OMASEUS. 
(Ziegler) Steph., Il. Brit. Ent. i. 112 (1828). 
