54 C. F. ROUSSELET ON A NEW FRESH-WATER POLYZOON 



beginning, the animals will be narcotised and insensible to needle 

 pricks, and are then to be killed and fixed with a solution of 

 2 per cent, formaldehyde, 1 part of the commercial solution in 

 15 parts of water (the solution usually sold being mostly much 

 nearer 30 per cent, than the nominal strength of 40 per cent), 

 to which a veiy little osmic acid solution has been added. After 

 five minutes the Polyzoa are removed and washed in 1 per cent, 

 formaldehyde, and finally preserved in the same fluid. 



Bibliography of the More Important Faunistic Papers on 

 Fresh- water Polyzoa since 1856. 



1. 1850. Allman, Geo. Jas. u A Monograph of Fresh-water 



Polyzoa." London. Ray Society. 11 pi. 



2. 1858. Leidy, J. "On Cristatella idae." Proc. Ac. Nat. S'c. 



Philadelphia, pp. 188 — 190. 



3. 1858. Carter, H. J. " Description of a lacustrine Bryozoon 



allied to Flustra (Hislopia)" Ann. Mag. Nat. 

 Hist., ser. 3, vol. i., pp. 169 — 171, 1 pi. 



4. 1859. Carter, H. J. "On the identity in structure and 



composition of the so-called seed-like body of Spongilla 

 with the winter egg of the Bryozoa." Ann. Mag. 

 Nat. Hist., ser. 3, vol. iii., pp. 332 — 343, 1 pi. 



5. 1860. Aplin, 0. D'O. " Fresh-water Polyzoa in Australia." 



Ann. Mag. Nat. Hist., ser. 3, vol. vi., pp. 454, 455. 



6. 1860. MacGillivray, P. H. " Description of a New Species 



of Plumatella." Trans. Boy. Soc. Victoria, vol. v., 

 pp. 203, 204. 



7. 1865 — 6. Hyatt, A. " Observations on Polyzoa, Suborder 



Phylactolaemata." Proc. Essex Inst., vols. iv. and v. 

 9 pi. 



8. 1866. Parfitt, E. " On two New Species of Fresh water 



Polyzoa." Amu Mag. Nat. Hist., ser. 3, vol. xviii., 

 pp. 171 — 173. 



9. 1870. Kent, W. S. "On a New Polyzoon Victorella pavida 



from the Victoria Docks." Quart. Journ. Micr. Sc, 

 new ser., vol. x., pp. 34 — 39, 1 pi. 



