PLATE XLIV. 



TPias. 

 1-4. Paulinella chromatophora Lauterbovii. (p. 66) Figs. 

 1, 2. — Side view and transverse section of an active 

 individual. x 1500. Fig. 3. — Process of division. 

 X 1500. Fig. 4— Nucleus. X 2000. All after 

 Lauterborn. 

 5, 6. P. chromatophora var. pulchella (Gr. S. West) Wailes. 

 (p. 67) Oral and side views. After West, x 750. 

 7, 8. P. chromatophora Lauterborn. (p. 66) Side and oral 

 views. After Brown, x 1200. 

 9, 10. Lecythium hyalinum Hertwig & Lesser. (p. 104) 

 Fig. 9. — Solitary active individual. Fig. 10. — Ap- 

 pearance of same when deprived of air. x 500. 

 11. L. granulattim (Schulze) Hopk. (p. Ill) Lidividual 

 distended by ingested diatoms ; from a specimen 

 stained and mounted by Dr. Penard. x 300. 

 12, 13. Diplophrys archeri Barker, (p. 144) Fig. 12. — Active 

 solitary individual. Fig. 13. — Process of tetrad 

 division. After Hertwig & Lesser, x 1000. 



