Mr. F. P. Marrat on proposed new Species of Oliva. 473 
colour. Again, in his description of O. pulchella, Reeve (not 
Duclos, as quoted) tells us that it differs from 0. lanceolata, 
Reeve, in having the spots invariably removed from the 
sutures. 
Mr. Ponton says that the purple stain at the base of the 
columella is a marked chalet of O. reticularis, Lam. I will 
enumerate the species or varieties with and without this stain. 
1. Having no stain :—0O. reticularis, Lam. (Reeve, pl. 10. 
fig.16a), stated. in Reeve’s description to be the type. There 
are forty specimens of this variety before me, and I have ex- 
amined at least two hundred more without finding in any one 
of them the slightest trace of the stain mentioned by Reeve 
and quoted by Mr. Ponton ; neither does it occur in any speci- 
mens of the smaller West-Indian variety examined by me. 
O. timorea, Duclos, O. obesina, Lam., O. Melchersi, Mke. 
(O. araneosa, Lam.) (four pale varieties), O. pindarina, Du- 
clos (six pale varieties), O. ustulata, Lam., O. hepatica, Lam., 
O. julieta, Duclos, O. polpasta, Duclos, O. peruviana, Lam. 
(normal form), and O. fus¢formis, Lam. 
2. More or less stained :—O. incrassata, Soland. (O. angu- 
lata, Liam.), five out of fourteen specimens ; O. subangulata, Phi- 
lippi, O. Melcherst, Mke. ( O. araneosa, Lam.), all the dark varie- 
ties; O. pindarina, Duclos, all the dark varieties; Reeve’s 
shell, figured at pl. 10. fig. 16, of which there are two very 
much finer specimens than the one figured lying on my table 
(they were sent by a resident inJamaica, and gathered by himself 
on the shore of that island; but I must remark that the resem- 
blance, spoken of by Reeve, to the variety O. araneosa, Lam., 
does not appear to me so striking). The shell figured at pl. 11. 
fig. 16 4 has the columellar lip of a uniform dark-brown colour. 
O.splendidula, Sow.; O. Cumingti, Reeve. I have not observed 
an approach to the colour of this shell in any specimen in the 
reticularis group; whereas shells of a similar colour and character 
with the stain at the base are of frequent occurrence among the 
abnormal forms of O. perwviana, Lam. (of which the O. ligneola, 
Reeve is one), the O. intertincta, Carpenter, O. inflata, Lam., 
O. nebulosa, Lam., and O. undatella, Lam. In fact O. reti- 
cularis, as at peeves constituted, is (like the term Fucus in 
geology, anything in the form of a plant) anything in the 
orm of an Olive. Having the whole of the species and varie- 
ties described both by Reeve and Duclos, and at least twelve 
others in that group of which I have seen either a figure or 
description, neither my O. violacea nor jamaicensis will agree 
with any of them. 
Now, with regard to O. truncata, Marrat ; since describing 
this species, several other specimens have been examined by 
Ann. & Mag. N. Hist. Ser. 4. Vol. i. 33 
