382 COOKE : ON THE MACANDREW COLLECTION. 



Valvata piscina! is Miill. Liverpool. 

 Hydrobia similis Drap. Tilbury. 



Labelled Rissoa anatina. 

 H. similis Drap. Greenwich. 



From Jeffreys. 

 H. ventrosa Mont. No locality. 

 H. ulvae Penn. Southampton. 

 H. ulvae Penn. Lewes. 



One or two of the specimens appear to be the var. 

 Barleei Jeffreys. 

 H. ulvae Penn. Liverpool. 

 H. ulvae Penn. var. Barleei Jeffr. Loch Fyne. 

 H. ulvae Penn. var. octona. Guernsey. 



As Rissoa (i.e., Hydrobia) ventrosa. 

 Planorbis lineatus Walker. Buckenham, Norfolk. 



Not in the original collection. I have added it. 

 P. nitidus Miill. Elgin, &c. 



As Jeffreys (vol. i., p. 82) says he is not aware of 

 this species having been found living with the preceding, 

 I may record that I have found them living in the same 

 pond at Buckenham, Norfolk, P. lineatus being by far 

 the most abundant. 

 P. nautileus L. Belfast. 



Labelled P. imbricatus Miill., of which I find no 

 record in Jeffr. One specimen on the card was so 

 obviously not P. 7iautileus that I have removed it. It 

 was P. glaber. 

 P: albus Mull. Anglesea. 

 P. glaber Jeffr. No locality. 



"From Jeffreys," but no locality. 

 P. glaber Jeffr. Holy Island and Essex. 

 As "/l Levis Alder." 



J.C, iii., October, 1S82 



