Bibliography 



An arboreal PoJygyra. Vol. 31, No. 1, p. 36, 1917. 



PoJygyra albolahris maritima in Massachusetts. Vol. 31, No. 3, 



p. 108, 1918. 

 Helix nemoralis at Knoxville, Tennessee. Vol. 31, No. 3, p. 108, 



1918. 

 Some Philippine shells. Vol. 32, No. 2, p. 58, 1918. 

 The land Mollusca of the Belgian Congo. Vol. 34, No. 3, p. 102, 



1921. 

 Notes on Craspedopoma lucidum and other Madeira shells. \'ol. 



34, No. 4, p. 113, 1921. 

 The genus Plehecula Lowe. Vol. 34, No. 4, p. 133, 1921. 

 CocKERELL, T. D. A. and Cooper, Mary 



Notes on Ashmunella. Vol. 15, No. 10, p. 109, 1902. 

 CoLUNGE, Walter E. 



On the occurrence oi Arion fasciatus Nilss. in America. Vol. 13, 



No. 1, p. 9, 1899. 

 CoLTON, Harold S. 



Land shells of Mount Desert, Maine. Vol. 17, No. 9, p. 99, 1904. 

 Sexual dimorphism in Stromhus pugilis Linne. Vol. 18, No. 12, 



p. 138, 1905. 

 Some notes on living Strombus pugilis Linne. Vol. 19, No. 8, 



p. 85, 1905. 

 Results of a statistical study of variation in the blue shells of 



Pecten nucleus irradians found at Atlantic City, New Jersey. 



Vol. 28, No. 5, p. 52, 1914. 

 On classification in general, and the genus Lymnaea in particular. 



Vol. 28, No. 10, p. 116, 1915. 

 A provisional key to the subgenera and species of North American 



Lymnaeidae, Vol. 28, No. 10, p. 119, 1915. 

 Conner, Charles H. 



Margariiana margaritifera in Pennsylvania. Vol. 18, No. 8, p. 91, 



1904. 

 Glochidia of U^tio on fishes. Vol. 18, No. 12, p. 142, 1905. 

 The gravid periods of Unios. Vol. 21, No. 8, p. 87, 1907. 

 Supplementary notes on the breeding seasons of the Unionidae. 



Vol. 22, No. 10, p. Ill, 1909. 

 Cooke, A. H. 



In Memoriam,— M. H. Crosse. Vol. 12, No. 9, p. 104, 1899. 



