BRITISH FRESH-WATER ENTOMOSTRACA. 447 



Mr. W. F. cle V. Kane found this in Lough Erne, where it 

 occurs pretty abundantly. It has not hitherto been noticed 

 elsewhere in the British Isles. 



Leptodoridae. 



Leptodora Lilljeborg. 

 L. kindtii (Focke). 



Z. hyalina Crraham (9), Beck (3), Scott (20, etc.), Scourfield 



(20), and all authors who have mentioned it. 



Not uncommon in lakes and large reservoirs. In the south and 



east of England it has only been found, so far as I am aware, by 



Mr. C. F. Rousselet, who on two separate occasions took a few 



specimens in the Regent's Canal at Regent's Park, London. 



Whether they normally live in this locality, or are simply brought 



from a distance by the water passing through the canal, has not 



been determined. 



An attempt has been made in the following table to show 

 at a glance the distribution of the British fresh -water Cladocera, 

 so far as this can be ascertained from the records to which I 

 have had access. A few words of explanation will probably 

 be necessary to make it quite clear. 



(1) The table is so arranged that the total known species 

 for England, Wales, Ireland, and Scotland respectively are 

 to be found in the four columns commencing with " Total 

 England." 



(2) England has been divided into three great divisions — 

 South and East, Midland, and North — and the totals of these 

 appear in three adjoining columns. By " South and East " is 

 to be understood all the country lying to the south-east of a 

 line joining the Wash and the south-west corner of Hampshire. 

 "North" comprises the six northern counties, and "Midland" 

 the country between " South and East " and " North." The 

 south-west is not alluded to because no records of any extent 

 are known for that part of England. It should also be men- 

 tioned that the available records for the ]\[idlands are not 

 nearly so complete as for the South and East, and North of 

 England, and they are, moreover, almost entirely confined 

 to the districts around Birmingham and Leicester. For the 

 former district I am indebted to Mr. Hodgson's list (10), and 



