M. hystrix. M. ecaudatus edentulus, fauce lævi.

M. mancinella. M. ecaudatus, edentulus fauce striata.

This original heading, and the absence of the erroneous synonym from the MS., confirm the received opinion of the identity of the Museum species (not that of the 'Systema') with Purpura mancinella.

M. hippocastanum. M. ecaudatus edentulus, fauce edentula integra, spinis serie triplici.

Gualtieri's erroneously cited figure was not indicated in the manuscript. No specific name had been originally attached to the description.

M. melongena. M. ecaudatus edentulus fauce patula lævi, spinis serie duplici.

"Bonan. 3. f. 186" had been added to the synonymy by our author. The details were less copious than in the published edition, "apice solo acuminatus" being the meagre substitute for the entire description from "Spira" to the end.

M. ficus. Bul. caudata, striis reticulatis, spira obtusa.

"Pet. Amb. t. 6. f. 9" was an omitted synonym. The shell described in the 'Museum' was assuredly not the ficus of most writers.

M. rapa. Bul. caudata, striis longitudinalibus, spira acuta.