418. Segmentina Flemg. 
nitida Müll. Germ. 
419. Ancylus Geoffr. 
capuloides Jan. Sicil. 
costatus Vill. Teneriffa 
Cumigianus Bourg. Tasmania 
striatus Morel. Minorca 
420. Acroloxus Bk. 
fluviatilis Müll. Germ. 
havannensis Pfr Cuba 
lacustris Müll. Germ. 
tenuis Kurr. Nilagerrh. 
421. Latia Gray 
lateralis Gould. N. Seel. 
neritoides Gray 2. 
422. Gundlachia Pfr. 
ancyliformis Pfr. Cuba 
423. Ampullacera Quoy 
avellana Gm. N. Seel. 
fragilis Lm. S Austral. 
maculata Mss. Fidschi I. 
tenuis Gray Melbourne 
494. Siphonaria Sow. 
albicans Quoy Vanicor. 
Algesirae ,, Gibralt. 
amara Mitt. Sandw. lI. 
aspera ? ? 
atra Quoy Vanicor. 
erebrieostata Nutt. Sandw. I. 
denticulata Quoy N. Holl. 
N 
exigua Sow. 
gigas 5; 
Gallopag. I. 
Jonasi Dkr. Guinea 
Lessoni Blvlle. Chili 
leucopleura Gm. Fidschi 1. 
Nuttalii ? Sandw. I. 
obliquata Sow. Van Diemsl. 
palpetrum Rv. Cap Verde 
plana Quoy Lad. Er. 
plieata ,, Tong. Tab. 
rugosa D'Orb. Brasil. 
Savignyi Phil. M. rubr. 
striato-costata Dkr. Cap Verde 
variabilis Krss Natal 
495. Acutalia Schauf. 
fusca Walk. Europa 
spectabilis Rm. Carniol. 
426. Geomelania Pfr. 
jamaicensis Pfr. Jam 
pygmaea Adams $ 
428. Truncatella Risso 
Adamsi Pfr. Jam. 
bilabiata ,, Cuba 
capillacea Gdleh. - 
caribaeensis Sow. 
” 
conspicua Brod. Fidschi I. 
costulata Risso Europa 
filicosta Gdlch. Cuba 
Montaguei Lowe Britan. 
pellueida Dhrn. Arab 
prineeps ^. 5 Primzl 
pulchella Pfr. Portorico 
rustica Mss. Uea 
scalaris Mich. Cuba 
semicostata Montr. Ovalan 
subeylindrica Gray Portorico 
truncatula Drp. Dalm. 
v. laevigata Risso Sicil. 
turrita ? M. adr. 
valida Pfr Phlpn. 
ventricosa Sow. S. Africa 
vetiana Gould. Uea 
429. Blanfordia Adams 
japonica Adams 
Japan 
430. Diplommatina Bens. 
australiae Bens. Fidschi I. 
capillacea Pfr. N. Irland 
exilis Blfd. Birmah 
Godefroyana Mss. Fidschi I 
Magillivrayi Pfr. N. Irland 
pachycheilus Bens. Ind. or. 
431. Moussonia O. Semp. 
typica O. Semp. Upola 
432. Stenothyra Mouss. 
gracilis Mouss. Ovalan 
