PULMONATA. 335 
Spec. Char. “ B. Testa sinistrorsd, ovato-oblongd, spird longiusculd, convead, apice 
obtuso ; anfractibus septenis, sensim crescentibus, viv convexiusculis, suturd pland, lineari 
junctis, longitudinaliter et oblique densé striatis, striis equalibus, regularibus, sublamellosis, 
ultimo anfractu dimidiam partem teste equante oblique paulo deflexo, basi imperforato ; 
apertura ovato-semilunari ; labro tenui, laté expanso, reflexo.”—Desh. 
Height, 14 inch ; breadth, $ inch. 
Locality. Britam: Dulwich (4. Boft). 
France: Rilly (Deshayes). 
A specimen from which the figure above referred to has been taken is from the 
cabinet of Mr. Arthur Bott. It is a cast only, the shell having entirely disappeared, but 
seems to correspond with the French fossil, except that our specimen has the last volution 
somewhat smaller, and the body is apparently rather larger. Our specimen has, how- 
ever, been slightly distorted and thrown out of its regular form. ‘The figure by 
M. Deshayes represents the French shell as being spirally striated; but the disappear- 
ance of the exterior of our specimen renders it impossible to say what might have been 
the ornamentation of the English fossil. I have therefore thought it most prudent to 
add a note of interrogation to the specific name. 
This genus when first proposed contained many hundred species with shells that 
varied much in outward appearance, some being terrestrial and some aquatic in their 
habits. It has since been separated into a large number of genera or sections, some of 
these depending upon differences in the animals which are not available by the 
paleontologist. 
No. 258. Butimus convexus, F. #. Edwards, MS. Tab. XXXIV, fig. 6. 
Spec. Char. B. Testd elongata, turritd ; anfractibus 6 convevis, suturd depressd, basi 
convexd, apertura ovatd, labro acuto, simplici, columella subreflexd, umbilico parvo. 
Height, 14 inch; breadth, Zths nearly. 
Locality. Sconce (Hdwards). 
A fine specimen with the above name is in Mr. Edwards’ collection, and I know of 
no species with which it can be identified or even to which it presents a close approxima- 
tion. I have adopted the name given to it by Mr. Edwards. 
The nearest fossil with which I can compare it is Bulimus mirus, Desh., but our shell 
differs so materially from the figure given of this species that it is scarcely necessary to 
mention their possible connection. The French shell, however, is the nearest ally I can 
find, and I mention it only for the purpose of comparison when the two shells of each 
species can be placed together. 
