18 PALUDESTRINID.^ 



First described as British in 1821, by J. E. Gray, as 



Paludina ventricosa. {See ref. above.) 

 British Distribution in Time : Pleistocene to Recent. 



(Sub-fam. : Paludestrinin^.) 



Genus : 2. PALUDESTRINA, Orbigny. 



Etyra. : — Lat., from paludesler, marshy. 



Type : — Cydostoma acutum, Draj^arnaud = Turbo vcntrosus, 



Montagu. 

 {Turbo, Cydostoma, Paludina, etc., vett. auctt.) 



182] . Hydrobia : Hartmann, Neue Alpina, i, p. 258. [Genus 

 defined in Sturm's Deutsdil. Fauna, vi, lift. 5, 

 1821, p. 47.] [Non Hydrobius, Leach, 1817 

 (Coleop.).] 



1827. Pyramis [pars] : Brown, Illust. Condi. Brit., ed. 1, 



pi. 1, explan. [Non Bolten, 1798; nee 

 Schumacher, 1817; ncc Otto, 1821 (Medus.).] 



1828. Cinrjula [pars] : Fleming, Brit. Anim., p. 305. [When 



originally established in 1818 (Suppt. 4-6th 



ed. Ency. Brit., iii, p. 311) the genus did not 



include shells of this group.] 

 1840. Paludestrina : Orbigny,- Voy. Amer. merid., v, pt. 3, 



Moll., p. 381. 

 1847. Sabanwa [pars] : Leach (MS. 1818, published by J. E. 



Gray) Ann. & Mag. Nat. Hist., xx, p. 270. 

 1851. Subulina : A. Schmidt, Verhandl. NatnrJi. Vcr. Preuss. 



Rheml. d Wcsfphal, viii, p. 332. [Non 



Beck, 1837 (Achatin.).] 



1. Paludestrina ventrosa (Montagu). 

 Etyni. : — Lat. vcit/rosus, bellying out. 



?17G5. Tiirho sfar/iialis : Baster, Ofusc. Subscc, ii, p. 77, pi. vii, 

 f. 4. [Both description and figure are in- 

 adequate for determination. It has been 

 identified with the Turbo ulvce of Pennant, 

 but the sole species present to-day at the 

 type locality (Zierikzee, near the mouth of 

 the Scheldt) is P. ventrosa (Mont.). Linne 

 included it in the 12th ed. of his Systema, 

 Naturre (p. 1248, no. 697) as Helix staf/ncdis. 

 Afterwards, noticing that he had already used 

 the name (= Limneeastaynalis), he altered it 

 in manuscript in his own copy to Helix 

 Basleri. Gmelin, in Linn. Syst. Nat., ed. 13 

 (i, pt. 6, 1791, p. 3653, no. 119), changed the 

 trivial name to stayiiornin.] 



