Torino, Reale Accademia delle Scienza di Torino, 1841. Large 4to (28.8 x 22.0 cm). 37 pp.; one fine, lithographed plate. Marbled wrappers.

A rare, well-illustrated work on teratological gastropod shells, by the Italian malacologist Carlo Porro (1813-1848). "...Carlo Porro's attention soon turned to natural sciences, in particular to terrestrial and fluvial malacology: he had just finished "elementary studies" when he travelled to Austria and Hungary with De Cristofori and Jan (1832); its first publication is from 1836. He then went to Paris (1836-1837?) To study zoology (with Milne Edwards), comparative anatomy (Blainville) and geology. He joined the "Societé 'Cuvierienne" in Paris. ... On the death of G. De Cristofori, with the acquisition of the museum by the municipality of Milan, C. Porro became one of the six "free curators" and it was in this role that he published a catalog of continental molluscs in 1846." (Naturamediterraneo site). Fine, clean; with very wide margins. Caprotti II, p. 47 [211]. Neither in Cat BM(NH), nor in Nissen.