EXPLANATION OF PLATE XIV. 



FIG. 



1-3. BODO JULIDIS, Leidy, x 750 (Leidy). 



4-6. BODO MAXIMUS, Schmarda, x 300 (Schm.). 



7-8. BODO URINARIUS, Hassall, x 400 (Hass.). 



g-ii. BODO LYMNjEi, Stiebel sp. 9 and 10, motile zooids, x 600 ; u, Sporocyst with 



escaping germs, x 250 (Ecker). 



12, 13. BODO (CRYPTOBIA) HELICIS, Leidy, x 400 (Leidy). 



14. BODO INTESTINALIS, Ehr., X 400. 



15, 1 6. CERCOMONAS CRASSICAUDA, St. At 16, with posterior irregular pseudopodic 

 extensions, x 600 (Stein). 



17-20. CERCOMONAS LONGICAUDA, Duj. 17 lateral, 18 dorsal view; 19 and 20, 



progressive stages of longitudinal fission, x 600 (Stein). 

 21. CERCOMONAS CYLINDRICA, Duj., x 1200 (Dujardin). 



22-30. CERCOMONAS TYPICUS, S. K. (Dallinger and Drysdale). 22, normal adult 

 monad, X 1750 ; 23 and 24, amoeboid phases of matured monads ; 25 and 26, 

 successive results of coalescence of two amceboid monads ; 27, sporocyst 

 ultimately derived from foregoing coalescence ; 28, sporocyst burst and 

 liberating minute spores ; 29 and 30, progressive phases of transverse fission. 



31-33. GONIOMONAS TRUNCATUS, Fres. sp. At a, eye-like pigment-band, x 600 (Stein). 



34-36. SPUMELLA VIVIPARA, Ehr. sp. (Stein). 34 attached, 35 and 36 free-swimming 

 conditions ; at a, eye-like pigment-band or supposed oral aperture, x 6oy. 



37-45. PHYSOMONAS SOCIALIS, S. K. 37, A group of five monads attached to vegetable 

 fibre, showing at a and b examples incepting food-matter at opposite regions 

 of their periphery, x 1000 ; 38, a free-swimming monad; 39 and 40, illus- 

 trating the alternating systole and diastole of the two medianly located con- 

 tractile vesicles ; 41 and 42, phases of longitudinal fission ; 43, an encysted 

 group, showing at a a stalked and at b a stalkless cyst ; at c, two stalks con- 

 nected with a single and larger cyst, indicating its derivation from the conju- 

 gation or coalescence of two zooids, x 1500 ; 44, a sporocyst with ripe spores, 

 x 2000 ; 45, monadiform germs released from the same sporocyst, x 2500. 



46-52. SPUMELLA GUTTULA, Ehr. sp. (Stein), x 600. 46, normal attached monad ; 

 47 and 48, free-swimming monads ; 49 and 50, illustrating conjugative process 

 of larger and smaller monads ; 51 and 52, successive phases of longitudinal 

 fission. 



53. CODONCECA COSTATA, J.-Clk., x looo (J. -Clark). 



54. CODONCECA OBLIQUA, S. K., x 800. 



55-59. AMPHIMONAS GLOBOSA, S.K. 55, a group of four monads, one, at a, incepting 

 food on its lateral periphery, x 800 ; 56-59, successive phenomena observed 

 during the inception of a large Bacillus, and in the preliminary phases of 

 which process (Figs. 56 and 57) a film-like expansion of sarcode was extended 

 over the captured prey. 



60-65. DELTOMONAS CYCLOPUM, S. K. 60, a social group attached to hair of a species 

 of Cyclops j at a, a free-swimming animalcule, and at b a young non-flagellate 

 germ, x 1500 ; 61, a single monad, x 3000 ; 62, a group of four monads 

 united by their posterior extremities ; 63, longitudinal fission ; 64 and 65, 

 sporocysts with spores. 

 66. AMPHIMONAS DIVARICANS, S. K., x 2500. 



