38 CARABID.E. 



Found, though not abundantly, both in the Madeiran and Cana- 

 rian Groups namely, in Madeira proper and Porto Santo of the 

 former, and in Lanzarote and Fuerteventura of the latter. It occurs 

 principally under stones in hot and arid places, at rather low and 

 intermediate elevations. 



Genus 30. PLATYDERUS. 



Stephens, III Brit. Ent. i. 101 (1828). 



108. Platyderus alticola. 

 Platyderus alticola, Woll, Cat. Can. Col. 45 (1864). 



Habitat Canarienses (Ten.), in montibus prsecipue valde excclsis sub 

 lapidibus in aperto rarissimus. 



Observed hitherto only at very lofty altitudes on the mountains of 

 Teneriffe, where I have taken it sparingly (from beneath stones) 011 

 the elevated Cumbre overlooking the Cafiadas, at nearly 9000 feet 

 above the sea ; and I have little doubt that two Teneriffan specimens 

 now before me, from the collection of M. de la Perraudiere, are from 

 the same district. A single example which was captured on a com- 

 paratively low maritime ridge in the vicinity of S ta Cruz differs 

 slightly from the ordinary type, and may possibly prove to be the 

 exponent of a closely allied species. 







109. Platyderus tenuistriatus. 



Platyderus tenuistriatus, Woll, Cat. Can. Col. 45 (1864). 

 Habitat Canarienses (Ten.}, sub lapidibus rarissimus. 



A Canarian insect of the greatest rarity a single example only, 

 captured by Dr. Crotch in Teneriffe (during the spring of 1862) 

 having as yet been brought to light. 



Genus 31. PTEROSTICHUS, Auct. 



(Subgenus Poecilus, Bon.) 



110. Pterostichus crenatus. 



Feronia crenata (Hoffm.), Dej., Spec. Gen. des Col iii. 226 (1828). 



, BrulU, in Webb et Berth. (Col) 56 (1838). 

 Pterostichus crenatus, Woll, Cat. Can. Col 46 (1864). 



Habitat Canarienses (Lanz., Fuert.), sub lapidibus in intermediis 

 rarior. 



A south-European insect which occurs very sparingly in Lanzarote 



