SYSTEMATIC DESCRIPTION OF SPECIES. 85 



FIG. 64. Spirochaetes from mussels. (Schellack.) a, Sp. 

 spiculifera; b, Sp. cardii papillosi; c, Sp. saxicavae; d, Sp. tapetos 

 (X 2250); e, Sp. spiculifera; /, Sp. pusilla; g, Sp. pusilla; h, Sp. 

 anodontae; i, Sp. limae; k, Sp. ostreae; /, Sp. modiolas. X 1000 (ex- 

 cept d) . 



