DYTISCID^E. 63 



been observed only in Lanzarote, Fuerteventnra, and Teneriffe. It 

 is decidedly scarce, or at any rate very local, occurring in wet places 

 at low and intermediate altitudes. It appears to exist in the south 

 of Europe also (having been taken by Kiesenwetter in Greece), and 

 in the north of Africa ; but I have not had an opportunity of com- 

 paring one of the more northern examples with the Canarian type. 



(Subgenus Bembidium, Auct.} 



187. Bembidium Crotchii. 



Bembidium Crotchii, Woll, Cat. Can. Col. 73 (1864). 

 Habitat Canarienses (Palmam), in humidis rarissimum. 



A Canarian Bembidium, detected by Dr. Crotch in Palma, where 

 it would appear to represent the B. pallidipenne of more northern 

 latitudes. It is evidently extremely rare, and was captured at the 

 edges of a Levada on the mountain-slopes above S ta Cruz. 



(Subgenus Notaphus, Meg.') 



188. Bembidium marginicolle. 



Bembidium marginicolle, Woll., Cat. Can. Col. 74 (1864). 

 Habitat Canarienses (Ten.), rarissimum. 



Detected in Teneriffe, during the spring of 1862, by Dr. Crotch ; 

 but whether it is more than a geographical modification of the Euro- 

 pean B. varium I will not undertake, from the evidence afforded by 

 only two specimens, to decide. Further material, when procured, 

 must settle the point. 



Fam.2. DYTISCHXE. 



Genus 48. HALIPLUS. 

 Latreille, Gen. Crust, et Ins. i. 234 (1806). 



189. Haliplus suflusus. 



Haliplus suffusus, Woll, Cat. Can. Col. 74 (1864). 

 Habitat Canarienses (Can., Gom.), hinc inde in aquis parum vulgaris, 



A Canarian Haliplus, which has been detected hitherto only in 

 Grand Canary and Teneriffe. It much resembles the common Euro- 

 pean //. UneatocolUs, though I believe it to be truly distinct therefrom. 



