88 
PllQCEEBINGS OF THE SCIENTIFIC ASSOCIATION. 
gradually increasing from the smaller end, which is annulate, 
becoming smooth towards the middle of the shell; the 
lower half smooth, shining, rather suddenly thickened near 
the aperture, to form which it as suddenly contracts to a 
diameter not greater than that of the smaller third of the 
tube. 
There are no very distinct characters by which to separate 
this annelid case from D. planum of the European eocene. 
I have thought it as well nevertheless to indicate its 
presence in the Jamaica tertiaries under a provisional name. 
EXPLANATION OF THE PLATES. 
All the Figures are of the Natural She. 
Plate I. 
Fig. 
1. Phos erectus 
Fig. 
, 7, Ovulum immunitum 
it 
2. Monodonta basilea 
it 
8. Murex collatus 
kv 
3. Ancillaria pinguis 
33 
9. Purpura miocenica 
4. Tornatella textilis 
Ha 
10. Scalaria leroyi 
31 
5. Fasciolaria textilis 
33 
11, Ditrupa dentalina 
it 
6. Bulla vendryesiana 
Plate II. 
Eig, 1, la. Leda clara Fig. 6. 
,, 2a, 2b, Hyalaea vendryesiana ,, 7. 
a 
y >> 
3. Conus consobrinus 
4. Cancellaria scalatelia 
5a, b, c. Chama involuta 
5a exterior of left valve 
5b interior of left valve 
5c exterior of right valve 
8 . 
9. 
Naticina regia 
Plicatula vexiilata 
Venus blandiana 
Conus prototypus. 
(The latter is a 
fossil from the 
Miocene of Trin- 
idad.) 
