18, Note on the occurrence of Dolium variegatum 
- Lamarck at Maskat, with considerations on its geo- 
graphical distribution at the present day and in 
former geological times. 
By E. VREDENBURG. 
Published with the permission of the Director, Geological Survey of I ndia. 
es geol. Reichs-Museums in Leiden, new series, Vol. I, p. 162, 
Pl. XXV, fig. 376), and it has also been observed in beds of the 
Same age in the Mekran region. itd 
While studying recent shells in the Indian Museum or the 
i any part of the Indian Ocean, while Dolium variegatum 1s 
hot unlike the immature specimens of Dolium galea. nae 4 
Parated from Maskat by the deep portion of the Ee oO 
Oman, but the shallow-water organisms can easily travel 2 - 
the coast round the head of the gulf, the total area of whic 
of moderate extent 
: i the 
Creover, amongst some shells which I picked up on ¢ 
each of Clifton, a ssburk of Karachi, in April 1900, and fog 
wacked a few days ago, I have noticed another aria ea 
um variegatum, the presence of which further ad : car 
Probability of the suggested identification of the Cha 
