TRANSPLANTATION OF BIVALVES. 6l 



The closure of an oyster upon one of the toes of a golden 

 plover was recorded in the Field, in 1889/ and the 

 taking of a cormorant with an oyster upon its bill was 

 reported, in 1892, in the Daily News? Many other 

 similar records, no doubt, might be found ; but we must 

 pass on to the consideration of facts which have a more 

 direct bearing upon the subject in hand. 



Insects. 



From the number of observations which have been 

 made, it seems that small fresh-water bivalves, such as 

 Sphcerium and Pisidium, frequently attach themselves 

 to aquatic insects. 



Spharium corfteum upon the leg of a Dragon-fly-larva ; taken at Twenty Pits near 

 Manchester, and now in the Manchester Museum. ' 



The larva of a dragon-fly with a shell of Sphce^ 

 rium corjteum clinging to one of its legs was once 

 caught at Twenty Pits, near Manchester, and the 

 specimen preserved with the shell attached (Fig. i) is 



^ " Field," Ixxiii. (1889), 308. 



^ " Daily News," October 4, 1892. 



