Reference

Ngassam, Pierre de Puytorac [de Puytorac], Jean Grain (1994): On *Paraptychostomum almae* n. g., n. sp., a commensal ciliate from the digestive tract of oligochaetes of the Cameroons, in a new subclass Hysterocinetia – J. Euk. Microbiol. – 41: 155 - 162.