CARABID^E. 



158. Trechus dilutus. 



Trechus dilutus, Wott., Im. Mad. 66 (1854). 

 , Id, Oat. Mad. Col. 20 (1857). 



Habitat Maderenses (Mad.),in sylvaticis humidis editioribus sat rams, 



Inhabits the sylvan regions of Madeira proper, occurring sparingly 

 in damp spots at a high elevation. 



159. Trechus felix. 



Trechus felix, Wott., Cat. Can. Col. 63 (1864). 

 Habitat Canarienses (Ten.), in sylvaticis humidis editioribus rarissimus. 



Apparently peculiar to the sylvan regions of Teneriffe, where It 

 may perhaps be regarded as the Canarian representative of the 

 T. custos of Madeira. It is extremely rare, the few specimens which 

 I have seen having been taken by myself (during May 1859) in the 

 damp laurel-woods on the mountains above Taganana. 



160. Trechus quadricollis. 



Trechus quadricollis, Wott., Im. Mad. 68 (1854). 

 , Id., Cat. Mad. Col. 20 (1857). 



Habitat Maderenses (Mad.), in montibus supra urbem Funehalensem 

 semel tantum repertus. 



The only example which I have seen of this Trechus was taken 

 by myself (during the autumn of 1847) in Madeira proper, on the 

 mountains above Funchal ; and it is just possible that it may repre- 

 sent some aberrant state of the T. custos, peculiar to the southern 

 slopes of the island. It would be necessary, however, to inspect 

 further material before such could be assumed as probable. 



161. Trechus cnstos. 



Trechus custos, Wott., Ins. Mad. 68 (1854). 

 , Id., Cat. Mad. Col. 20 (1857). 



Habitat Maderenses (Mad.), in sylvaticis praesertim editioribus vul- 

 garis. 



A rather common insect in the sylvan regions of Madeira proper, 

 to which island it appears to be peculiar. 



162. Trechus alticola. 



Trechus alticola, WolL, Ins. Mad. 69 (1854). 

 , Id., Cat. Mad. Col. 20 (1857). 





Habitat Maderenses (Mad.), in locis valde elevatis extrasylvaticis 

 hinc inde parce occurrens. 



Inhabits the loftiest elevations of Madeira proper, above the sylvan 



