BRITISH FRESH-WATER ENTOMOSTRACA. 433 



D. leuchtenbergianum Fischer. 



Daphnella Wingii Baird (in part) (1). 

 It is very doubtful whether this is distinct from the foregoing 

 species. Our usual Diaphanosoma certainly seems to be D. 

 hrachyurum, but I have occasionally seen specimens in the Lake 

 District and in North Wales which would probably come under 

 D. leuchteyibergianum, and Mr. W. F. de Y. Kane tells me he has 

 seen this form in several localities in Ireland. Baird's figures 

 (1 Tab. XIY.) seem to represent this species rather than D. 

 brachyurum if we may judge by the great length of the second 

 antennae. 



■ 



Latona Straus. 

 L. setifera (0. F. Miiller). 



Not yet seen in Ireland or south-east and middle of England. 



HOLOPEDIDAE. 



Holopedium Zaddach. 

 H. gibberum Zaddach. 



Not yet seen in the south, east, and middle of England 

 or in Wales. Mr. Kane has taken specimens at Ballinahinch, 

 Connemara, which is so far the only record from Ireland. 



Daphnidae. 

 Daphnia O. F. Muller. 

 D. magna Straus. 



D. schaefferi Baird (1). 

 A rather rare species, but distributed all over England. Not 

 yet recorded from Scotland, Ireland, or Wales. 



D. atkinsoni Baird. 



Dactylura puhesceyis Brady (5). 

 I have carefully examined specimens of D. puhescens kindly 

 sent to me by Prof. G. S. Brady, and F believe they should be 

 referred to D. atkinsoni. The only difference I can find is that 

 the post-abdomen tapers evenly to the claws, whereas in the 

 figures given by Lilljeborg there is a slight but distinct trunca- 

 tion just before the claws are reached. The characteristic 

 flattening of the head above the eye certainly occurs in 7>. 

 puhescens, and the number of teeth on the post-abdomen is 11 

 or 12, not about 25 as stated by Brady. The latter number 



