Names are proposed and descriptions given for five new species of bacteria isolated from stored distilled water from various laboratories. Corynebacterium aquaticum n. sp. has may of the characteristics of the motile plant pathogenic bacteria that have been placed in genus Corynebacterium. Other species named are Flavobacterium cagsulatum n. sp., Spirillum delicatum n. sp., Pseudomonas Lanceolata n. sp., and Pseudomonas huttiensis n. sp. Cultures of the type strain of each new species have been deposited in the American Type Culture Collection.