Occasional Papers of the Museum of Zoology 7 



PiLSBRV^ H. A. The American Species of Carychium. Nautilus, 

 VIII, pp. 61-63. 1894. (Contains short descriptions and figures of 

 C. exiguum, cxigituni mexicaniim, occidentalis, exile, exile jamaicensis.) 



Call, R. E. Some Notes on the Flora and Fauna of Mammoth 

 Cave, Ky. American Naturalist, XXXI, p. 387, fig. 1897. (C stygium.) 



Clapp, Geo. H. Carychium nannodes, n.sp. Nautilus, XIX, p. 91, 

 PI. Ill, figs. 7-9. 1905. 



Clapp, Geo. H. Notes on Carychium and Description of a New 

 Variety. Nautilus, XIX, pp. 138-140, PI. VlII. 1906. (C. exile caii- 

 adeiise, and notes on variation in size of exiguum and exile. A num- 

 ber of figures of exile, e. canadense, and exiguum are given, and one 

 of a cotype of C. stygium.') 



Clapp, Geo. H. New Southern Forms of Carychium and Thysano- 

 phora. Nautilus, XXXI, pp. 73-76, PI. VIII, figs, i, 2, 6, 7. 1918. 

 (C exiguum floridanum.) 



