243 
GASTEROPODA TERIIESTRIA ET AOUAE DULCIS. 
Limax rufus L. 
TestacellahaliotideaF.Piig. 
Vitrina pellucida Miill. 
Succinea amphibia Drap_ 
Helix pomatia L. ? 
— pisana Miill. 
— elegans L. 
— • ericetorum Miill. 
— variabilis Drap. 
— carthusiana Drap, 
— aouleata Miill. 
- nitida Miill. 
Helix rupestris Drap. 
— crystallina MiilL 
— strlata Drap. 
— rotundata Miill. 
— aspersa Miill. 
— arbustorum L. 
— iiemoralis L. 
— hortensis Miin, 
Bulimus acutus Brg, 
— obscurus, 
— lubricus, 
— Pupa L. 
Achatina acicula. Miill, 
Pupa muscorum MiilL 
— Avena Drap, 
— antivertigo Drap, 
— pygmaea Drap, 
— pusilla Miill, 
Balea perversa L. 
Clausilia bider.s Miill. 
Cyclostoma elegans MiilL 
Limnaeus palustris Miill. 
— ovatus Miill. 
— minutus Drap. 
Physa fontinalis L. 
PlanorbismarginatusDrap, 
— Spirorbis MiilL 
Valvata piscinalis MiilL 
— cristata Miill. 
Paludina tentaculata L. 
— - thermalis L. 
Ancylus fluviatilis. 
— lacustris L. 
Oclopus vulgaris Lam. 
Loli"o vulgaris Lam, 
CEPII VLOPODA. 
Loligo saglttata Lara, Sepia officinalis L, 
Sepiola Rondeleti Lam. 
CI. Fleiiiing- eiiumeravit : 198 Bivalvia niariiia, 10 Bivalv^ia aquac duicis, 5 Brachio- 
poda, 20 Gasteropoda niariua nuda, 191 Gasteropoda uiariaa tcstacca, 93 Gastcropoda ter- 
restria, 7 Ccplialopoda; in suninia 5'24 3IoIIusca; (Ptcropoda, Cirripedia et Dentaliian oniisit); 
ispc enumeravi 194 Bivalvia niarina, 11 Bivalvia aquae dulcis, 20 Bracliiopoda, 13 Ptcro- 
poda, 54 Gasteropoda marina nuda, 261 Gasteropoda niarina tcstacea, 180 Gasteropoda ter- 
rcstria et aquae dulcis, 15 CepJialopoda, 6 Heteropoda, 7 Dentalia, 18 Cirripedia iu summa 
769 Mollusca, aut, suLIatis Pteropodis, Ilctcropodis, Cirripediis et Dcntiiliis 725. In niarl 
Meditcrraiico occurrunt MoIIusca niarina (exclusis Ptcrop. ctc) 534, in mari Angliam allucntc 
421; Mollusca terrestria et aquae dulcis vivunt in rcg-no utriusquc Siciliae 191 in Ang-Iiae 103; 
est ig-itur numcrus Molluscorum aLsolutus, cum marinorum tum tcrcstriuni, iu Italia inieriorc 
longe niajor quam in Anglia, et quidem ratione 1:1,38. 
Angiia habet communia coni Sicilia : 
Siciiia etc. liahet comniunia cum Anglia; 
E 193 Bivalvib. marinis 84 sive 0,41—42. 
10 Bivalv. aq. dulc. 5 ^ — ■ — 
5 Bracliiopodis 2 — 
20 Gasterop. mar. nud, 7 
191 Gastcrop, mar, testac. 
93 Gasterop. tcrrestr. etc, 
7 Ceplialopodis 5 sive 
— 0,35. 
56 sive 0,29. 
45 — 0,48. 
E 194 Bivaivib. marinis 84 
11 Bivaiv, aq. dulc. 4 
10 Bracliiopodis 2 
54 Gastcrop, mar. nud. 7 
261 Gasterop. mar. lestac. 56 
180 Gasterop. tcrrestr. etc. 45 
15 Ceplialoqodis 5 
sive 0,43. 
0,13. 
■ 0,211/2. 
0,25. 
0,30. 
Maximam concordiam liabent Bivalvia (praetcr Ccpliaiopoda parum numerosa ideoque 
certum numcrum vix praebeutia), minorem Gasteropoda tcrrestria et aquac dulcis, miuimam 
Gasteropoda marina. 
In Italia australi non iiiodo numerus spccierutii major cst, sed etiam numcrus generuin, 
et igitur quoquc varielas forinarum. 
Desiderautur enim in Ang-iia g^enera: 
Clavagella, Idalia. 
Solenomya, Diphyllidia, 
Scacchia. Pleurobranchaea, 
Cavdita, Umbrella, 
Chama. Tylodina. 
Spondyhis. Crepidula. 
Thecidea. Acera. 
Thetys. Gasteropteron. 
lu Sicilia genera Ang-Iiae: 
Xylophaga. D/scina, 
Mya, ^''clutina, 
Sphenia. Skenea, 
Sangulnolaria, Cyclostrema. 
Cyprina. Lacuna, 
Ervilia ) genera mihi Polycera. 
Lepton ) prorsus Tergipes, 
Goodallia J ignota. Montagua. 
