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Familia 22. INVOLUTA Lamk. 
ERATO Risso. 
Testa obovata, iiilidissima, epidermide destituta; spira brevis, conica, distincta, 
anfractus ultimus maximus; apertura angusta, linearis; labrum extus incrassalum, intus 
denticulatura ; coluraella laevis, basi obsolete plicata. Differt a Cypraeis spira exserta, 
labio edentulo; aMarginellis et p olvariis plicis columellae nuUis; ab Ovulis spira distincta. 
Animal ut in Cypraeis pallio dilatato, ex utroque latere supra testam reflexo; 
siplione exserto; lentaculis approximatis longis filiformibus obtusiusculis , oculis ad basin 
externam stipatis; pede longo, depresso, non dilatato. Pallium fuscum punctulis flavis ir- 
roratuni, reliquum corpus albidura, roseis maculis variegatum, pes subtus cinerascens. 
Erato Cypraeola Riss. 
E. testa pyriformi, spira prominula obtusiuscula, anfractibus obsoletis, labro extus 
marginato; columella ad basin obsolete plicata. 
Erato Cypraeola Riss. p. 240. f. 85. — Voluta Cypraeola Broc. p. 321. t. k. f. 10. 
— RIakginella Cypraeola Bronn. — M. Donova?<i Payr. p. 167. t. 8. f. 26. 27. — 
M. Must ARiA Costa p. LXXII. ct LXXIII. nr. 7. (vidi in coU. ejus) non Lamk. — Vo- 
lcta laevis Donov. et Cypraea Volcta Mont. secund. Payr. 
Unum speciraen Panorrai cum animali accepi. 
Testa 4i^" longa, 3"^ lata, dorso flavescens, caeterum lactea; spira, anfraclibus 
quinque constans, quintam longitudinis partem occupat. 
Fossilis in calcareo Panormitano occurrit. 
OVULA Brug. 
Cf. G. B. Sowerby on the recent species of the Genus Ovuhim. Zool. journ. IV. p. 145. 
1. Ovula adriatica Sow. v. t. XIL f. 13. 
O. testa oblongo - ovali, subventricosa, utrinque subacuminata, pallide carnea, Jiya- 
lina, labri margine angusto, intus denticulato; coluraella superne uniplicata, infra subde- 
pressa, intus marginata. Sow. 
O. adriatica Sow. 1. c. p. 150. — 
Panorrai duo speciraina accepi. 
Testa 10|'" longa, 5"' lata, obovato - oblonga, tenuissima, pellucida, hyalina, velut 
lineis distantibus transversis angulataj labrum extus anguste raarginatum, involutuni, mar- 
gine interno tenuissirae denticulatura. Labrum, plica superior longitudinalis et basis 
labii lacteae. 
2. Ovula Spelta Lamk. v. t. XIL f. 17. 
O. testa oblonga, medio subventricosa, utrinque acuminata, apertura superne lineari, 
inferne subeffusa, labro subtus rotundato - angulato ; columella superne oblique uniplicata. Sow. 
0. Spelta Lamk. VII. p. 370. — Sow. 1. c. p. 158. — Iconcs citalae omnes rudes, malae. 
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