EXPLANATION OF PLATE XXXL (continued): 



Fig. 



25. TiNTlNNUS ANNULATUS, C. & L., vol. ii. p. 609, empty lorica, x 150 (Chip. & 



Lach.). 



26. TiNTINNUS OBLIQUUS, C. & L., vol. ii. p. 606, X 300 (Clap. & Lach.). 



27, 28. Vasicola ciliata, Tatem, vol. ii. p. 613. — 27, Animalcule contained within its 

 lorica, x 150; 28, free-swimming zooid (Tatem). 



29. Strombidinopsis gyrans, S. K., vol. ii. p. 614, X 200. 



30. TiNTINNUS sp., C. & L., empty lorica, x 150 (Clap. & Lach.). 



31. TiNTINNUS VENTRICOSUS, C. & L., vol. ii. p. 609, empty lorica, x 2C30 (Clap. & 



Lach.). 



32, 33. CODONELLA GALEA, Hid., vol. ii. p. 6 1 6. — 32, Animalcule fully extended beyond 

 the orifice of its lorica, x 200 ; 33, empty lorica, showing its tesselated 

 character (Haeckel), 



34-37. CODONELLA CAMPANELLA, Hkl., vol. ii. p. 618. — 34, FuUy extended animalcule 

 enclosing centrally numerous ovate germs, x 200 ; 35, empty lorica ; 36, 

 ovate germ, with contained endoplast and contractile vesicle ; 37, earlier 

 spore-like condition (Haeckel). 



38. CODONELLA ORTHOCERAS, Hkl., vol. ii. p. 6 1 6, X iSo (Haeckel). 



39-43. Trichodinopsis paradoxa, C. & L., vol. ii. p. 614.— 39, Adult animalcule, profile 

 view, X 200; 40, ventral acetabulum with plicate horny ring, x 300; 41-43, 

 internally developed corneous elements (Clap. & Lach.). 



44. Urceolaria mitra. Stein sp., vol. ii. p. 650, x 300 (Clap. & Lach.). 



45. Trichodina Steinii, C. & L., vol. ii. p. 648.— Acetabulum with denticulate 



ring, X 250 (Clap. & Lach.). 



46, 47. Trichodina scORPiENA, Robin, vol. ii. p. 649, lateral and ventral views, x 400 

 (Robin). 



48-52. Trichodina pediculus, Ehr., vol. ii. p. 646. — 48, Examples adherent in various 

 positions to the portion of a tentacle of a Hydra ; 49, two animalcules in 

 lateral view, x 150; 50, depressed free-swimming zooid ; 51, conically con- 

 tracted animalcule showing at or oral aperture, as delineated by Busch ; 52, 

 apparent example of conjugation between a large and small zooid, a, after 

 Busch. 



53. Vol. ii. p. 648. TRICHODINA-like larva, or Trochosphere of Polyzoon, AlcyonUiium 

 gdatinosum, as delineated in note-book placed at the author's disposal by 

 H. E. Forrest. 



54) 55- Scyphidia physarum, C. & L., vol ii. p. 658, expanded and contracted zooids, 

 X 200 (Quennerstedt). 



