271 Protozoa. 



29635 Metcalf, Maynard M. 31.7 Opalina : 14 



1909. Opalina. Its Anatomy and Reproduction, with a Description of 

 Infection Experiments and a Chronological Review of the Literature. 

 Oberlin Coll. Lab. Bull. No. 15, 181 pp., 15 pis., 17 flgg. 



36 Collin, B. 31.7 Opercularia (44.84) 



1909. Sur deux formes nouvelles d'Infusoires discotriches. Arch. 

 Zool. exper. (5) T. 2 p. XXI— XXIX, 2 figg. [2 nn. spp. in Opercu- 

 laria.'] 



37 Andre, Emile. 31.7 Ophryoglena : 16.9 : 51.23 



1909. Sur un nouvel Infusoire parasite des Dendrocoeles. {OphryogUna 

 parasitica n. sp.) Rey. Suisse Zool. T. 17 p. 273—280, 3 figg. 



38 Jennings, H. S. 31.7 Paramaecium : 11.044 



1899. The Psychology of a Protozoan. Anier. Joum. Psychol. Vol. 10 p. 

 503-615. 



39 Rossle. 31*7 Paramaecium : 11.044 



1909. Zur Immunitat einzelliger Organismen. Terh. deutsch. path. (Jes. 

 13 p. 158-162. 



40 Jennings, H. S. 31.7 Paramaecium : 11.5 



1909. Diverse Races of Paramecium and their Relation to Selection 

 and to Conjugation. (Amer. Soc. Zool.) Science N. S. Vol. 29 p. 424 — 

 425. 



41 Woodruff, Lorande Loss. 31.7 Paramaecium : 11.6 



1908. The life cycle of Paramecium. Proc. Soc. exper. Biol. Med, N. Y. 

 Vol. 5 p. 124. [Under varied environment much longer in duration, many 

 more, generations, than when subjected to a constant culture medium of 

 hay infusion,] 



42 Woodruff, Lorande Loss. 81.7 Paramaecium : 11.6 



1909. Studies on the life cycle of Paramaecium. Proc. Soc. exper. 

 Biol. Med. N. Y. Vol. 6 p. 117—118. [Unlimited duration of the life 

 history.] 



29643 Woodruff, Lorande Loss. 31.7 Paramaecium : 11.6 



1909. Duration of the Cycle of Paramaecium. (Amer. Soc. Zool.) Science 

 N. S. Vol. 29 p. 425. [930 generations without conjugation.] 



44 Schaeffer, Asa A. 31.7 Steutor : 11.81 



1909. Selection of Food in Stentor coeruleus. (Amer. Soc. Zool.) Science 

 N. S. Vol. 29 p. 425. 



45 Gregory, Louise Hoyt. 31.7 Tillina : 11.6 



1909. Observations on the Life History of Tillina magna. Journ. exper. 

 Zool. Vol. 6 p. 383-432, 2 pis., 3 figg. 



46 Entz, Geza, jr. 31.7 Tintinnidae : 14 



1909. Studien iiber Organisation und Biologie der Tintinniden. Arch. 

 Protistenkde. Bd. 16 p. 93—226, 14 Taf., 1 figg. 



47 Schweyer, A. 31.7 Tintinnidae : 14 



1909. Zur Kenntnis des Tintinnodeenweichkorpers, nebst einleitenden 

 Worten iiber die Hiilsenstruktur und die Hiilsenbildung. Arch, Protis- 

 tenkde. Bd. 18 p. 134—189, 2 Taf., 9 figg. 



48 Collin, B. 31.75 



1909. Diagnoses preliminaires d'Acinetiens nouveaux ou mal connus. 

 C. R. Acad. Sc. Paris T. 149 p. 1094—1095. [8 nn. spp. in: Acineta 4, 

 Rhyncliophria n. g., Dactylophrya n. g., Ophryodendron. Periacineta n. g. pro 

 Hallezia buckei, Thecacineta pro Acineta cothurnioides.] 



49 Hickson, Sydney J. 31.75 



1909. The Suctoria. Trans. Manchester micr. Soc. 1908 p. 31—43. 



50 Martin, C. H. 31.75 : 11 



1909. Some Observations on Acinetaria. Quart. Joum. micr. Sc. N. S. 

 VoL 53 p. 351—389, 629—664, 3 pis., 19 figg. 11.3,.66 



29651 Collin, B. 31.75 : 11.5 



1909. Sur les formes hypertrophiques et la croissance degenerative chez 

 quelques Acinetiens. C. R. Acad. Sc. Paris T. 149 p. 742 — 745. 



15. L 1910. 



