PAnruESTiiiNTn.i:. 67 



Family PALUDESTRINID.E l = JhjdroUidoe\ 



Subfamily PALUDESTRININJ5. 



Shell small, corneous, fusiform, narrowly riuiate or imperforate. 

 Distrihatuya. World-wide. 



Geuus PALUDESTRINA. 



Hiidrobia, Tlavtmann, 1821, iioc Leack in CJoleoptera, 1817. 

 Pakulastrina, d'Orbigtiy, Voy. Aiuer. Merid., Moll. 1840, p. 381. 



Type, P. auheriana, d'Orb. ; S. America. 



Itanije. World-wide. 



Animals having no eyes on the tentacles, these being placed 

 outwardly at their base ; operculum horny, spiral, resembling 

 LUtoriiia. An inhabitant of both fresh and brackish water. 



Subgenus BELaRANDIA. 



Belf/ritndia, Bourgiuii-nat, Cat. Moll. Ter. Fhiv. Env. Paris, I8G9, 

 p. 15. 



Type, B'Uhhiella (jihha, Draperuaud; France. 



llanr/e. Europe ; Asia. 



Shell having one or two rounded swellings on the last whorl, 

 these, as the author explains at some length, being quite diiferent 

 from those caused by rest periods. 



135. Paludestrina (Belgraudia) miliacea, Xevlll. 



Fahulestruia {Beljrandia) miliacea, Nevill, J. A. S. B. xlix, pt 2, 

 p. 161; op. cit., 1, p. loS, pi. vii, tig. 7 ; Nevill, Hand List, 

 pt. 2, p. 52 [as Hydrnbia (Jii/thiuclla)]. 



Orlglnnl descriplimt -. — Testa roinuta, vix rimata, conico- 

 elongatula, solida, parum uitida, albido-viridula, laevigata; spira 

 paululum producta, apice miiuito, acutiusculo ; anfr. 5, con- 

 vexiuscnli, ultimis duobus rapide accrescentibus, ultimo basi 

 subplanulato, ad aperturani gibbositatc crassa circuinscripto ; 

 apertura ovato-rotundata, intus incrassata, peristoma continuum, 

 valide incrassatum, margine externo arcuato, basi sinuato, mar- 

 gine coluraellari subangulatim contorto, snhreliexo. Operculum 

 sat profunde immersum, tenue, pellucidum, vitreum. 



Alt. about 2-75, diam. l~ii mm, 



Jf(iJ). Port Canning {Xcrill, MuimvarlHg). 



Type in Indian .Mus(;um, Calcutta. 



Subvar. gibbosiila. 



Jfiih. Port Canning {Sloliczht). 



v2 



