ON FRESHWATER POLYZOA. 337 
1839. Fredericella sultana. Gervais, Ann. Franc. et Etrang. d’ Anat. tom. iii. 
p. 136. 
1840. Fredericella sultana. Gervais, Dict. Sci. Nat. Suppl. vol. i. Pl. Suppl. 
Pol. Fluv. (Original figures). 
1843. alien sultana. Thompson, Rep. Brit. Assoc. ann. 1843. p. 285. 
1844. Fredericella sultana. ‘ ἐς 
1544. Fredericella αἰϊαία at Allman, Ann. Nat. Hist. vol. xiii. p. 331. 
1844. Fredericella sultana. Ailman, Proc. R. I. Acad. 1844. No. 44. 
1847. Fredericella sultana. Johnston, Brit. Zooph. 2nd edit. p. 405. 
1848. Fredericella sultana. Van Beneden, Recherches sur les Bryoz. fluv. 
de Belg. p. 25, Mém. de l’Acad. Roy. de Belg. 1848. 
1850. Fredericella sultana. Hancock, Ann. Nat. Hist. 2nd series, vol. v. 
p- 173. pl. 2. f. 1. 4 ἃ 6. and pl. 3. f. 1. (Original figures.) 
The original figures are those of Blumenbach, Van Beneden, Gervais 
and Hancock. There is also an eriginal figure apparently referable to this 
species, though unaccompanied by a name, illustrating a paper by Mr. Varley 
in the Lond. Phys. Journal, No. 2, 1844. 
Distribution—Germany, France, Belgium, England, Scotland, Ireland. 
Genus 6. PatupicELLa, Gervais (1836). 
Gen. Char.—Cceneecium membrano-corneous, branched, branches composed 
of a series of claviform cells placed end to end and separated from one 
another by complete septa; orifices tubular, lateral placed near the wide 
extremity of each cell. Lophophore orbicular ; no oral valve or calyciform 
membrane. Ova lenticular with a narrow annulus. 
Species unica. Paludicella Ehrenbergi, Van Beneden. 
Spec. Char.—Same as that of the genus. 
: SyNonyMs. 
1831. Alcyonella articulata. Ehrenberg, Symb. Phys. Evert. Dec. 1. Pol. 
fol. a. 
1832. Alcyonella diaphana. Nordmann, Mikrograph. Beitrage, vol. ii. p. 75. 
1836. Paludicella articulata. Gervais, Comptes Rend. 1836. 
1837. Paludicella. Gervais, Ann. Sc. Nat. 2nd series, tom. vii. p. 80. 
1839. Paludicella articulata. Gervais, Ann. Franc. et Etrang. d’ Anat. 
tom. iii. p. 75. 
1839. Paludicella. Van Beneden, Bull. Ac. Brux. tom. vi. 2nd part. p. 278. 
fig. 1. (Original figure.) 
1840. Paludicelle articulée. Gervais, Dict. Sc. Nat. Suppl. vol. i. pl. 1. 
Pol. Fluv. fig. 6. (Original figure.) 
1842. Paludicella articulata. Allman, On the Muscular Syst. of Palud. &c. 
Roy. Irish Acad. 1842. No. 38. with a plate. (Original figure.) 
1843. Paludicella articulata. Thompson, Rep. Brit. Assoc. ann. 1843. p. 285. 
1844. Paludicella articulata. Allman, Ann. Nat. Hist. vol. xiii. p. 331. 
1847. Paludicella articulata. Johnston, Brit. Zooph. 2nd edit. p. 405. 
fig. 77. p. 406. (Original figure.) 
~ 1848. Paludicella Ehrenbergi. Van Beneden, Recherches sur les Bryoz. fluv. 
de Belg. p. 27, Mém. de l’Acad. Roy. de Belg. 1848. 
1850. Paludicella procumbens. Hancock, Ann. Nat. Hist. 2nd series, vol. v. 
p- 201. pl. 5. fig. 1, 2. and pl. 4. (Original figures.) 
The original figures are those of Van Beneden, Gervais, Allman, John- 
ston, and Hancock. 
Distribution.—Prussia, France, Belgium, England, Ireland. 
1850. Ζ 
