TRANSPLANTATION OF BIVALVES. 63 



mollusks attached to their legs/' were exhibited by Mr. 

 Whitelegge at a meeting of the Linnean Society of New 

 South Wales in 1885/ and I hear from Mr. C. Hedley 

 that in the vicinity of Sydney, Mr. Whitelegge has 

 frequently noticed hemipterous insects, both Notonecta 

 and Corixay laden with bivalves : three specimens of 

 Pisidium etheridgei have been seen attached to one 

 insect, one on each fore-leg and one on the snout. 



Quite a number of instances of the clinging of these 

 molluscs to water-beetles can be given. As stated by 

 Mr. Darwin in a letter published in "Nature" in 1882, 

 a specimen of the " great water-beetle," Dytiscus 

 marginalis, with a shell of Cyclas cornea \_ = Sphcerimn 

 corneuin\ clinging to one of its legs, was caught by Mr. 

 W. D. Crick, of Northampton, on i8th February of that 

 year : — 



" The shell was '45 of an inch from end to end, '3 

 in depth, and weighed (as Mr. Crick informs me) "39 

 grams, or six grains. The valves clipped only the 

 extremity of the tarsus for a length of *! of an inch. 

 Nevertheless, the shell did not drop off, on the beetle 

 when caught shaking its leg violently. The specimen 

 was brought home in a handkerchief, and placed after 

 about three hours in water; and the shell remained 

 attached from February i8th to 23rd, when it dropped 

 off, being still alive, and so remained for about a 

 fortnight while in my possession. ■" ^ 



1 *'Proc. Lin. Soc, N.S.W.," x. (1886), 760. 



2 Darwin, "Nature," xxv. (1882), 529-30; and see also "Life 

 and Letters," iii. (1888), 252. 



