EXPLANATION OF PLATE V. 



Fig. 



1-9. Salpingceca amphoridium, J. -Clark, vol. i. p. 343. — i, Social colony attached 

 to confervoid filament, x 625 ; 2, a separate and normal zooid with collar 

 fully expanded, x 1250; 3, a zooid with collar contracted, and with lorica 

 supported on a rudimentary pedicle ; 4, zooid encysted within its lorica ; 



5, zooid with collar entirely retracted, the flagellum remaining, but much 

 thickened at its base, and the body-sarcode protruding in a lobose form ; 



6, anterior region of zooid, showing its protrusion from the lorica in the form 

 of a fascicle of filamentous pseudopodia ; 7, a zooid in which the protruded 

 sarcode has assumed a branched, pinnatifid, contour ; 8, the protruded 

 sarcode of the same zooid having become detached, and resembling a stellate 

 floating amceba, x 1250 ; 9, a more minute stellate amceba-like body found 

 floating in the same vicinity, and probably possessing a similar derivation. 



10-12. Salpingceca Steinii, S. K., voL i. p. 346. — 10, two rosette-shaped colonies, and 

 four more isolated zooids attached to the pedicle of Epistylis aiiastatica, 

 X 300 (Stein); 11, a single zooid (Stein); 12, a colony, as found by the 

 author, attached to the pedicle of Vorticella campanula, x 1000. 



13. Salpingceca amphora, S. K., voL i. p. 347, x 1500. 



14-16. Salpingceca urceglata, S. K., vol. i. p. 353. — 14 and 15, zooids with collar 

 extended and contracted ; 16, empty lorica, x 1500. 



17-1S. Salpingceca ringens, S. K., vol i. p. 354.— At 18 an example encysted, 

 X 1500. 



Salpingceca curvipes, S. K., voL i. p. 355, x 2000. 



POLYCECA DICHOTOMA, S. K., vol. i. p. 360, X 1500. 



Salpingceca tintinnabulum, S. K., vol. i. p. 354. — 22, Encysted state, x 2000. 

 Salpingceca (?) Wallichi, S. K., vol. i. p. 348.-23, Remains of loricre at aaa 



embedded within shell substance of a Globigerina ; 24, a single isolated 



lorica, highly magnified. 



Salpingceca napiformis, S. K., vol. i. p. 355. — 25, Asocial colony in vegetable 

 fibre, X 800 ; 26, a single zooid more highly magnified. 



Salpingceca fusiformis, S. K., vol. i. p. 346. — 27, A normal, fully expanded 

 zooid, X 1500 ; 28, a zooid with collar and flagellum retracted, assuming an 

 amceboid state ; 29, an encysted zooid ; 30, similar encystment, with body 

 broken up into numerous spore-like bodies; 31, spore-like bodies further 

 developed, and being discharged from the lorica as monoflagellate germs. 



32. A fomi of Salpingceca, apparently near S. fusiformis, dividing by transverse 

 fission (after Biitschli). 



33. A probable variety of Salpingceca amphoridium, vol. i. p. 343, the lorica 

 having a flattened base, the collar imperfectly delineated (after Biitschli). 



34. Salpingceca marina, J.-Clk., vol. i. p. 352. — An example with the collar and 

 flagellum withdrawn, emitting ray-like pseudopodia, x 1800. 



