PHYSA 99 



Westerlund {Fauna Paldarct. Region, v, p. 55) adds 

 to these P. Taslei, Bourg., which Germain considers 

 to be distinct.] 



First recorded as British in 1678, by J. Lister {Hist. 

 Anim. Angl., p. 142, pi. ii, f. 25). 



British Distribution in Time : Cromerian to Recent. 



2. Physa rivalis (Turton). 



Etym. : — -Lat. rivalis, pertaining to a brook. 



1791. Bulla fontinalis, ft : Gmelin, in Linn. Syst. Nat., ed. 13, 



i, pt. 6, p. 3427. [Teste Dillwyn (as B. cms- 



stila) and Binney.] 



f Bulla rivalis : Turton, Brit. Fauna, p. 169. [He pro- 



jgQY bably took the name from Maton & Rackett, 



J 'i whose paper was read in 1804, because in his 



Conch. Diet. (p. 26) and in Zool. Journ., ii, 



\ he cites those authors only.] 



1807. Bulla rivalis : Maton & Rackett, Trans. Linn. Soc., 



viii, p. 126, pi. iv, f. 2. 



1808. Bulla rivalis : Montagu, Test. Brit., Suppt., p. 97. 

 1817. Bulla crassula : Dillwyn, Cat. Shells, i, p. 487. [Teste 



Binney.] 

 1817. Bulla rivalis, Maton & R. : Dillwyn, t. c., p. 488. 

 *1819. Physa heterostropha : Say, Nicholson's Brit. Ency., 3rd 



Amer. ed., " Conchology," p. ?, pi. i, f. 6. 



(Binney's ed., p. 46, pi. Ixix, f. 6.) 

 1820. Aplexa rivalis : Fleming, Brewster's Edinh. Ency., 



xiv, p. 617. [He remarks in Brit. Anim., 



1828, p. 277, " it is a common shell from 



the West Indies."] 

 1822. Lininea {Physa) rivalis : Sowerby, Genera Shells, no. 7, 



[p. 3.], " Limnea," f. 9. 

 "1826. Helix heterostrophus : Eaton, Zool. Text Book, p. 195. 



[Teste Binney, ii, p. 85.] 

 1831. Physa rivalis: Turton, Manual, p. 128, f. 112. 

 1837. Bulinus {Aplexa) rivalis (M. et Rq.) Sowb. : Beck, Index 



Moll, p. 116. 



1840. Aplexus rivalis : Gray, in Turtou's Manual, new ed., 



p. 21, pi. ix, f. 112. 



1841. Physa fontana : Haldeman, Monog. Limniades, no. 2 



wrapper, p. iii. 

 1841. Physa osculans : Haldeman, o. c, no. 2 wrapper, p. iii, 



and no. 6, 1843, p. 29, pi. ii, f. 11-13. 

 1841. Physa soiverhyana, d'Orb. : Orbigny, Hist. He Cuba, 



Sagra, Moll., i, p. 190, pi. xiii, f. 11-13. 

 1841. Physa injluta : Lea, Proc. Amer. Phil. Soc, ii, p. 32, 



(Also Trans. Amer. Phil. Soc, ix, 1844, p. 7.) 



