7' 



Fig. 12. Protozoa. 

 I, Vorticella iiiaritw; 2, Zoothammon marinmn; {la, at a reduced scale showing colonies on the 

 copepod Eurytemora hinmdoides); 3, Cothuntia gracilis; 4, Cothnrnia haimiciisis; 5, Epiclitites re- 

 tractilis; 6, Acgyria tuotwstyla; 7, Euplotes harpa; 8, Aegyria diva; 9, Amphisia peniix; 10, Stidw- 

 cliacla pediculiformis; 11, Oxytricha pelliottella; 12, Acineta tiiberosa; 13, Parafavella elegaiis; 14, Para- 

 fat'clla edcntata; 15, Ptychocylis minor; 16, Salpiiigella ricta; \q, Tintinniis tiilnilosus; 18, Dictyocysta 

 magna; 19, Challcngcron ncptimi; 20, Nonioti pompilioides; 21, Acatliomctriin pellucidiim; 22, Glohi- 

 geriiia bnlloides; 23, Dictyocha fibula; 24, Achanthochiasma fusi forme; 25, Hexalondie philosophica; 



26, Distephanus speculum; 27, Thalassicolla nucleata. 



[i-ii, CiJiata. 12, Suctoria. 13-18, Tintinnoidea. 20, 22, Foramenifcra. 19, 21, 24, 25, 27, Radio- 



laria. 23, 26, Sihcoflagellata. All to the same scale except 2a and 27.] 



