70 CANAEIAN COLEOPTERA. 



its elytra and limbs (which last are perceptibly slenderer) a shade 

 paler in hue. It has been observed hitherto only in Lanzarote and 

 Fuerteventm-a, in the latter of which it was taken by Mr. Gray and 

 myself (by the edges of the little stream at La Antigua) in January 

 1858 ; whilst, during the spring of the following year, I again found 

 it in (the llio Palmas of) the same island, as also near Haria in the 

 north of Lanzarote. 



(Subgenus Peryphus, -IA'(/.) ' 



107. Bembidium atlanticum. 



Bembidium decorum, BndJe [nee Bcj.\ in Wehh et Berth. {Col.) 58 

 (1838). 



atlanticum, Woll, Ins. Mad. 77 ( 1854). 



, /(/., Cat. Mad. Col. 2.3 (1857). 



Habitat insulas Canarienses ; in Hierro sola adhue hand de- 

 tectum. 



The B. atlanticum, which is so common in Madeira and Porto 

 Santo, is equally abundant at the Canaries, where there can be no 

 doubt that it is universal. Nevertheless I did not happen to take 

 it in Hierro, during oiu- visit to that island in the winter of 18'5S ; 

 though in the other six islands of the Group it occurs almost 

 wherever there is a stream, or pool of water, and independently of 

 elevation. In Lanzarote and Gomera it was found likewise by IVIi-. 

 Gray ; and in Teneriffe, Gomera, and Palma by Dr. Crotch. It goes 

 through the same extraordinary changes of colouring as it does at 

 the Madeiras, — being generally more or less dark in comparatively 

 moist or shady spots (when the clytral patches are often entirely 

 obsolete), but for the most part brightly maculated in drier and more 

 barren districts; and we accordingly find that the examples from 

 Lanzarote and Fuerteventura are, on the average, very much paler 

 than those from the rest of the archipelago. This is precisely ana- 

 logous to the Porto-Santan specimens, as compared with those from 

 Madeira. It was referred by M. Bridle to the European B. decorum, 

 — from which, however, in all its states, it is perfectly distinct. 



(Subgenus Lopha, Meg.) 



108. Bembidium concolor. 



B. nigro-cyaneum, capite prothoraceque obscure viridi-micantibus, 

 hoc cordato, anguHs posticis rectis, basi punctato; elytris im- 

 macidatis, antice striato-punctatis (seriebus sublateralibus pro- 

 fundioribus), pone basin transversim impressis, punctis duobus 

 discalibus valde distinctis utriuque notatis ; antennis fuseo-nigris, 



