474 Mr. F. P. Marrat on proposed new Species of Oliva. 
me, all agreeing in form and marking with my shells; so that 
J am more convinced that this is a good form. | 
O. polita, Marrat, is made a variety of O. jaspidea of some- 
body not quoted. My shell has no affinity with the O. jaspi- 
dea, Gmelin, but somewhat resembles the O. jaspidea, Duclos, 
which is the same as O. Duclosit, Reeve. i 
O. piperata, Marrat. Here Mr. Ponton remarks that O. 
conoidalis, Lam., is simply a variety of O. jaspidea, not men- 
tioning whether it be the O. jaspidea, Duclos, or O. jaspidea, 
Gmelin. If the former, there is no relation; if the latter, the 
names are synonymous. 
O. faba, Marrat, is placed as a variety of O. carneola, Lam. 
(O. aurora, Soland.). According to a recent monograph by 
Dr. Gray, my shell belongs to the genus Strephona, having 
the spire open to the tip, and O. carneola, Lam., to the genus 
Galeola, embracing shells with a callous spire. J may remark 
that after three years’ search for any open-spired shell in this 
group—viz. O. calosoma, Duclos (a beautiful species), O. é- 
grina, Meusch. (0. tessellata, Lam.), O. todosina, Duclos, O. 
lepida, Duclos, O. volvarioides, Duclos, O. athenia, Duclos 
(not figured by Reeve, but quoted as a variety of O. carneola, 
Lam.), and O. picta, Reeve—I have failed in my attempt. 
In a drawer on my table one hundred specimens are arranged, 
consisting of all the figured varieties in the series, and several 
others neither figured nor described. 
O. blanda, Marrat. Mr. Ponton considers this to be a form 
of O. ispidula of somebody. If he mean the shell of Linn., 
I must inform him that the white shell of which he speaks is 
the O. candida, Lam. (O. olerinella, Duclos), and was sepa- 
rated by both these able conchologists, in consequence of the 
broad plaited columella. 
O. oblonga, Marrat. Will Mr. Ponton kindly refer to the 
figures mentioned in my description ? 
O. cylindrica, Marrat. Again a species with an open spire 
and rounded spiral whorls has been referred to the figure of a 
shell with a callous spire, but in this case with good reason. 
My description certainly favours the idea; but let me refer. to 
the group in my cabinet. I find seventy-three specimens under 
the head of O. crisans, Lam., including all the varieties figured 
in any work to which I have access, and many more beautiful 
than their more favoured paper brethren; but the eighteen 
shells under the head of O. cylindrica, Marrat, will not agree 
with any of them. 
O. ornata, Marrat, has been imported in considerable num- 
bers, and is an acknowledged species by every conchologist 
who has seen it. 
