BIVALVIA. 161 
as the Crag one, I was influenced by M. Deshayes’ having united the Eocene fossil with a 
shell found in the Touraine Beds. There is, | now think, so great a difference between 
the two that they ought to be specifically separated ; and as Sowerby’s name for the Crag 
shell has priority I so retain it, leaving the Hocene species to find a new one. 
NE@raA oBesa, Loven. Supplement, Tab. X, fig. 9. 
Nr@ra oBesa, Lovén. Ind. Moll. Scand., p. 48, 1846. 
— cuspipata, Jeffreys. Brit. Conch., vol. vy, p. 191. 
Locality. Coralline Crag, near Orford. 
A single specimen of this species is all that I have seen, which was obtained by Mr. 
Alfred Bell, and it now belongs to W. Reed, Hsq., of York, who has obligingly placed it 
in my hands for description. Mr. Jeffreys in the Supplement to his ‘ British Con- 
chology,’ p. 192, considered this specimen obtained by Mr. Bell and Lovén’s species 
obesa as a variety only of JV. cuspidata ; but in a paper of his in the ‘ Ann. and Mag. of 
Nat. Hist.’ for June, 1870, on the “ Norwegian Mollusca,” Mr. Jeffreys says that his 
reference of odesa to cuspidata was erroneous, and that he is satisfied that the two species 
are distinct. Still later, however, in the list to Mr. Prestwich’s Coralline Crag paper, 
he omits odesa as a Crag species. I consider it, however, a good species, and have so 
inserted it. 
Poromya GranuLAtA, WVyst and MWestendorf. Crag Moll, vol. u, p. 268, Tab. XXX, 
. fig. 5 a—/. 
I have seen this shell from the Cor. Crag only, and there it is by no means abundant. 
This species was found by Edward Forbes in the Aigean, and although found on the 
Scandinavian Coast, I consider it properly a southern form.. Mr. Jeffreys figured and 
described a minute bivalve as Poromya subtrigona,‘ Aun. and Mag. Nat. Hist.,’ 3rd 
series, 1858, p. 42, Pl. II, fig: 1, but in ‘ Brit. Conch.,’ vol. ii, p. 228, he refers this shell 
to the young of Kellia cycladia. 1 am not aware, therefore, of any other species of this 
genus besides granulata. 
Panopra Norvneica, Spengler. Crag Moll., vol. u, p. 281, Tab. X XIX, fig. 1. 
Localities. Red Crag, Sutton and Butley. Fluvio-marine Crag, Bramerton. 
Chillesford bed, Chillesford. Middle Glacial, Hopton. Upper Glacial, Bridlington. 
