CATACLYSTA LEMNATA. 79 



and but little produced beyond the last ring, and 

 having on each side a small angular projection ; the 

 circular flat button-like spiracles very slightly raised 

 above the surface ; the colour was a warm brown, and 

 shining. (William Buckler, 16th August, 1875; 

 E.M.M., October, 1875, XII, 102—106.) 



PARAPONTX STKAT10TATA. 



Plate CLI, fig. 2. 



It gives me great pleasure to acknowledge with 

 sincere thanks my obligation to Mr. W. C. Boyd, of 

 Cheshunt, for all the trouble he has so kindly taken to 

 furnish me with examples of this curious subaqueous 

 larva, until I have been able to observe its habits with 

 some degree of completeness. 



On the 10th of June, 1872, he sent me in wet moss 

 in a tin box, by post, two cocoons and three larvae ; 

 one of the latter, having died, was submitted to Dr. 

 T. A. Chapman, who examined its structure under the 

 microscope, and very kindly took considerable trouble 

 in making pen-and-ink sketches of several portions of 

 it — to my great assistance in making it out. 



The other examples I figured and described, but 

 was baffled at that time in fully observing their habits 

 by (as I believe) the carnivorous propensities of sundry 

 leeches and other interlopers, that gained admittance 

 among the leaves of the Anacharis alsinastrum, one of 

 the plants on which Para/ponyx stratiotata feeds ; for 

 by the end of the year not a trace of cocoons or larvae 

 could be found. 



However, on the 21st of July, 1874, Mr. Boyd was 

 able to send me, by railway, several cocoons and larvae, 

 as well as a good supply of food, and with these, 

 having taken more pains, I have been more successful, 

 carefully removing from their habitat all creatures 



