EXPLANATION OF PLATE IIL 

 Fig. 



1. Salpingceca or MONOSIGA sp., vol. i. p. 345. — Figured in Mr. Carter's MS. note- 



book without description, Bombay, Aug. 1855. 



2. Salpingceca or Monosiga sp., vol. ii. p. 703. — Figured by R. Greeff (' Wiegmann's 



Archiv,' Heft vi., 1870) as minute Flagellata attached to pedicle ai Epistylis 

 flavicans. 

 2r7- C0D0SIG.\ CVMOSA, S. K., vol. i. p. 337. — 3 and 4, Fully developed colony-stocks, 

 or " zoodendria," x 1250 ; 5, branchlet with three zooids, the one at a being 

 of abnormal size ; 6, branchlet ^vith two zooids, the one at a having encysted 

 and separated by segmentation into two equal halves ; 7, apparent abnormal 

 colonial growth of the same species ? 



8, 9. CODOSIGA CANDELABRUM, S. K., vol. i. p. 339, X 800. 



10-12. Salpingceca minuta, S. K., vol. i. p. 347-— lo, Two adult zooids and a single 

 undeveloped germ [a) attached to an empty lorica of Dinobryon sertularia, 

 X looo; II, a single zooid further enlarged; 12, a zooid with collar withdrawn 

 presenting a semi-amceboid condition. 



13-15. Salpingceca marina, J.-Clk., vol. i. p. 352.— 13, Early and naked condition ; 14 

 and 15, adult zooids with lories developed, x iSoo. 



16. Salpingceca pyxidium, S. K., vol. i. p. 347, x 1000. 

 17-21. Salpingceca ampulla, S. K., vol. i. p. 349.— 17, Adult zooid with fully developed 

 lorica, X 1250; 18, empty lorica; 19, zooid with lorica imperfectly developed 

 and as yet mucilaginous in consistence, at rt; a monoflagellate collarless germ 

 attached to the exterior of the lorica; 20, a germ which has become attached 

 and commenced to develop its coUar and protective lorica; 21, a more 

 advanced growth of the same zooid. 



22-24. Vol. ii. p. 703. Minute flagellate and apparently collar-bearing loricate monads 

 {Salphiga-cd), attached to pedicle of Episty lis flavicans, as delineated by 

 Greeff, x 300. 



25. Lagenceca cuspidata, S. K., vol. i. p. 360, X 1500. 



26. Salpingceca petiolata, S. K., vol. i. p. 349, x 1250. 



27,28. Polyceca dichotoma, S. K., vol. i. p. 360.— Two social colony-stocks or 

 polythecla, x 1000. 



