cNicKLES AND BASSLER.] PAPERS CLASSIFIED FRESH-WATER. 585 



1848. 



Beneden, P. J. van. liecherchos .sur les Bryozoaires fluviatiles de 

 H(>loi(jU(\ (Mem. Acad. R. Bolt^iqiie, XXI, 1848, 83 pp., pis. i, ii.) 



Dalyell, J. Gr. Rare and remarkable animals of Scotland. '2 vols., 

 London, 1847-48. Bryozoa in vol. 2. 



1849. 



AUman, Gr. J. On Lophopus cristallinus. (Brit. Assoc. Rep., XIX, 

 1849, Part II, p. 72.) (L'Institut, XVIII, 1850, p. Kl.) 



On a new fresh-water Bryozoon. (Brit. Assoc. Rep., XIX, 



1849, Part 2, p. 72.) 



On the natural history of the genus Alcyonella. (Proc. R. 



Irish Acad., IV, 1849, pp. 470-478.) 



1850. 



Allnian, Gr. J. On the present state of our knowledge of the fresh- 

 water Polyzoa. (Brit. Assoc. Rep., XX, 1850, pp. 305-337.) 



Hancock, A. On the anatomy of the fresh-water Bryozoa, with 

 descriptions of three new species. (Trans. T3nieside Nat. Field 

 Club, 1, 1850, pp. 367-405, 3 pis.) (Ann. Mag. Nat. Hist. [2], V, 

 1850, pp. 173-202, pis. ii-v.) 



1851. 



Leidy, J. On some American fresh-water Polyzoa. (Proc. Acad. Nat. 

 Sci. Philadelphia, V, 1851, pp. 320-322, 1 pi.) 



1853. 



Allman, Gr. J. On the reproductive system and development of the 

 gemma? in Paludicella articulata. (Proc. R. Irish Acad., V, 1853, 

 pp. 18-22.) 



1854. 



Leidy, J. On Urnatella gracilis and a new species of Plumatella. 

 (Proc. Acad. Nat. Sci. Philadelphia, VII, 1854, pp. 191-192.) 



1856. 



AUman, G. J. A monograph of the fresh- water Polyzoa, including 

 all the known species, both British and foreign. London, 1850. 

 viii+119 PP-,11 pis. (Review in (^uar. Jour. Micro. Sci., VI, 

 1858, pp. 36-43, by George Busk.) 



1858. 



Leidy, J. Remarks on Polyzoa. (Proc. Acad, Nat. Sci. Philadelphia, 

 1858, pp. 188-190.) 



