CARABID.E. 57 



state of the European P. areolatus ; nevertheless it possesses a few 

 other minute distinctive characters, apart from colour, which I have 

 fully alluded to in my diagnosis. 



(Subfam. XVI. BEMBIDIADES.) 



Genus 46. TACHYS. 

 (Ziegler), Steph.., Itt. Brit. Ent. ii. 4 (1829). 



168. Tachys Fockii. 



Bembidium Fockii, Hummel, Ess. Ent. ii. 27 (1822). 



silaceum, Dej., Spec. Gen. des Col. v. 50 (1831). 



numidicum, Luc., Col. de TAlgerie, 79, pi. 10. f. 3 (1849). 



Fockii, WoU., Cat. Mad. Col. 21 (1857). 



Tachys Fockii, Schaum, Nat. des Ins. Deutsch. \. 751 (1860). 



Habitat Maderenses (Mad.), semel tan turn repertus. 



The T. Fockii, of central and southern Europe and the north of 

 Africa, occurs very rarely in Madeira proper. Indeed only a single 

 example, which was taken by myself at the edge of the stream in 

 the Bibeira do Alcaide near Feijaa d'Ovelha, has hitherto been 

 detected. 



169. Tachys bistriatus. 



Elaphrus bistriatus (Meg.), Dufts., Fna Austr. ii. 205 (1812). 

 Bembidiuni bistriatum, WoU., Ins. Mad. 73 (1854). 



, Id., Cat. Mad. Col. 22 (1857). 



Tachys bistriatus, Schaum, Nat. der Ins. Deutsch. i. 746 (1860). 

 , WoU., Cat. Can. Col. 66 (1864). 



Habitat Maderenses (Mad.), et Canarienses (Gom.), in humidis sat 

 rarus. 



This European Tachys occurs both at the Madeiras and Canaries. 

 At the former it is tolerably common in Madeira proper, in wet places 

 at low and intermediate elevations ; but at the latter it is extremely 

 rare two specimens only, taken by Dr. Crotch in Gomera (during 

 the spring of 1862), being all that have yet been observed. 



170. Tachys scntellaris. 



Trechus scutellaris, Germ., Thon, Ent. Archiv,i\. fasc. i. 11 (1829). 

 Tachys scutellaris, Steph., III. Brit. Ent. ii. 5 (1829). 



, Schaum, Nat. der Ins. Deutsch. i. 745 (1860). 

 , WoU., Cat. Can. Col. 66 (1864). 



Habitat Caiiarienses (Lanz.), in salinis hinc inde vulgaris. 



The common European T. scutellaris is rather abundant in certain 



