EXPLANATION OF PLATE XLVIIIa. 



Fig. 



1-3. Ephelota CORONATA, Str. Wright, vol. ii. p. 846. — i, 2, Animalcules with 

 tentacles extended, at m m captured monads, x 200 ; 3, tentacles retracted. 



4. PODOPHRYA CONIPES, Meresch., vol. ii. p. 81 5, x 250 (Mereschkowsky). 



5. Ephelota Trold, C. & L., vol. ii. p. 847, x 175 (Claparede & Lachmann). 



6. ACTINOCYATHUS CIDARIS, S. K., vol. ii. p. 848, X 30O. 



7. AciNETA TUBEROSA, Ehr., vol. ii. p. 829. — Two zooids with tentacles in a fully 



extended and partially retracted state, x 200. 



8-12. Dendrocometes paradoxus, Stein, voL ii. p. 839. — 8, Adult animalcule, x 400, 

 one of the branched tentacles at a grasping a captured monad ; 9, the same 

 tentacle, x 1200, and showing the tubular perforations of the distal ter- 

 minations ; 10, a young recently attached animalcule; 11, animalcule 

 enclosing a ciliated embryo ; 12, a detached ciliated embryo (Wrzesniowski). 



13-15. Ophryodendron abietinum, C. & L., vol. ii. p. 850. — 13, Proboscidiform zooid 

 with proboscis retracted and with vermiform zooid attached to one side, 

 X 100; 14, proboscidiform zooid with proboscis extended; 15, ciliated 

 embryo, x 200 (Clap. & Lach.). 



16-19. Ophryodendron pedicellatum, Hincks, vol. ii. p. 852. — 16 and 17, Proboscidi- 

 form zooids with proboscis extended and retracted ; 18 and 19, two vermiform 

 zooids, the one in the latter instance having a second example sessilely 

 attached to its body, dimensions unrecorded. 



20-25. Ophryodendron porcellanum, S. K., vol. ii. p. 852. — 20, Zooid with probos- 

 cidiform appendage extended and recurved, x 200 ; 21, the same appendage 

 more completely extended in a rectilinear direction ; 22, a zooid bearing 

 both a proboscidiform and vermiform appendages ; 23, an example having 

 only a vermiform appendage ; 24, distal extremity of proboscis highly 

 magnified, x 800; 25, distal region of shaft of the proboscis, X 1200, show- 

 ing its transverse corrugation. 



26-31. Ophryodendron multicapitatum, S. K., vol. ii. p. 854. — 26, Sessile zooid 

 bearing four proboscidiform organs, x 300 ; 27, sessile example with four 

 proboscidiform organs pr, and three ovate gemmules s ; 28, stalked example 

 with two proboscidiform organs, two gemmules, and one vermiform appen- 

 dage ; 29-31, young pedicellate zooids ; 30 and 31, bearing each a single pro- 

 boscidiform organ only, this structure in the latter instance being retracted ; 

 29, representing a still younger zooid entirely destitute of appendages, and, 

 except for the presence of a pedicle, corresponding with the gemmular bodies 

 represented in figures 27 and 28. 



32. Ophryodendron abietinum, C. & L., vol. ii. p. 850. — Vermiform larva with 

 basal chitinous rod, x 400 (after Robin). 



