30 



BOOKS RECEIVED. 



that later on in the book, the suggestion is made that rare specimens should be 

 sent to the National Collection at the British Museum. 



The opening chapter contains much information that would be useful to 

 beginners in any branch of Natural History and the remainder of the book is 

 calculated to enable students of nature to spend many pleasant hours not only 

 in working through the matters actually brought before them, but in examin- 

 ing the structure and looking into the habits of other animals on the lines 

 laid down and suggested by Mr. Sherren. 



" Figure lO. " Sliclls of freshwater molluscs broken by Dytiscus. 

 [Figures 15 and 16 are reproduced through the courtesy of the Publishers.] 



A point of interest to malacologists is the account of the way in which 

 the water beetle Dytiscus marf^inals (" Fig. 15.") preys upon freshwater molluscs 

 and damages their shells (" Fig. 16 ") in a way that has puzzled many who did 

 not know who was the worker of such destruction. Mr. Sherren gave an 

 explanation in the " Field "* but afterwards was obliged to yield up the credit f 

 to Mr. G. B. Sowerby who, forty j-ears before, had written an account of this 

 habit of Dytiscus marginalis in his Popular History of the Aquarium. \ 



JOURNALS. 



The Journal of Conchology, vol. viii., No. 12, July ist, 1897. 



Marshall, J. T. — " Additions to 'British Conchology,' " (cont,), pp. 388-95. 



Wright, C. E. — " A colony of Caccilioidcs acicula Miill. in Northamptonshire," 

 P- 395- 



Melvill, J. C. and Standen, Robert. — " Notes on a collection of shells from 

 Lifu and Uvea, Loyalty Islands, formed by the Rev. James and Mrs. 

 Hadfield, with a list of species, part HL" pp. 396-421. 



Moss, 'W. — " A preliminary note on the genitalia of Hyalinia (Zonitoides) 

 nitida, Miill., and Hy. cxcavata Bean.," p. 421. 



Johnson, J. Yate. — "Description of Helix watsoni, n. sp,, discovered at 

 Madeira by Senhor J. M. Monez," pp. 429-430. 



Marshall, J. T. — " The IMarine Shells of Scilly," pp. 431-432. 



* The " Field," April 4th, 1896. t The " Field," May 2, 1896. X p. 288. 



