Some Non-Marine Mollusca from the lcenian

152

A REVIEW OF BRITISH LEPIDOPTERA

proved a very good year for the little Vestal Moth (Rhodometra sacraria Linn.) which was reported as quite numerous in the Isle of Wight with many other records from well inland in the Home and Eastern Counties, especially during September. An example of the rare Cosmopolitan Wainscot (Leucania loreyi Dup.) was taken on the Hampshire coast during the first half of this month when several of the White-speck Wainscot (Leucania unipuncta Haworth) again appeared along our south-western seaboard. The autumn did not prove very spectacular, except for the abundance of the Pearly Underwing (Peridroma porphyrea Schiff) and of the Grey Pine Carpet (Thera obeliscata HĂźbn.).

Blair's Pinion (Lithophane leautieri Bdv.), formerly known as L. lapidea HĂźbn., reappeared in good numbers, spreading to the Hampshire coast, while early October saw the capture at Torquay of the second British example of the striking American noctuid Plusia biloba Stephens, evidently indicating that some insects do get across the Atlantic most probably by natural means.

So ended what was generally regarded on the whole as a very lean and disappointing season with very few outstanding migrant visitors or captures of remarkable aberrational forms.

SOME NON-MARINE MOLLUSCA FROM THE ICENIAN by

D.

C.

LONG

THE Norwich Crag at Sizewell has been known to be fossiliferous for a considerable time ; remains of Cervidae and other mammals from this area are shown in the British Museum (Natural History) and Ipswich Museum, and some of the molluscan material in the Crowfoot collection at Norwich Castle comes from there. During the past four years Mr. H. E. P. Spencer, Mr. P. E. Long and the writer have collected a series of fossils from a small exposure near the Rifle Range. The land and freshwater species enumerated below were found among an assemblage in which gastropods were very prominent (Ptychopotamides, Littorina, Nucella, Melampus, " Paludestrina ") together with Cardium edule, Tellenidae and Mya. A number of microtine remains were also found.

153

NON-MARINE MOLLUSCA

NUMBER OF SPECIES

Viviparus cf. medius (S. Woodward) Valvata piscinalis (Muller) Lymnaea palustris (Muller) Planorbis planorbis Kennardi, Ellis 1949 (==P. praecursor Kennard & B. B. Woodward 1911) Planorbis leucostoma Millet Succinea oblonga Draparnaud v. agnonostoma KĂźster Succinea cf. putris (Linne) Succinea pfeifferi Rossmassier Hygromia hispida liberata, Westerlund Pupilla muscorum (Linne) Psidium amnicum (Muller)

SPECIMENS

4 8 13 6 4 4 1 7 2 2 3 valves.

There are indications that the Sizewell deposit would yield extensive and important evidence of the terrestrial and freshwater fauna of Norwich Crag times should extensive excavations be carried out there.

The Crag deposits above the Bryozoan Rock Bed at Aldeburgh Brickworks which appear to be of either very late Red Crag or early Norwich Crag age have yielded some very interesting fossils : gastropods apparently very similar to the little known species, Linctoscala inclusa, well preserved fish remains including a contemporaneous shark, gadoids and a long rough dab (Hippoglossoides sp.), and a number of freshwater and land molluscs. So far, all these latter have been small species or small fragments, but they include two species not previously found below the Cromerian (First interglacial).

NUMBER OF SPECIES

? Lymnaea sp. indet.

Planorbis leucostoma (Millet) *Planorbis cf. laevis (Alder) ? Succinea sp. indet. *Vallonia costata (Muller) Pupilla muscorum (Linne) * New to strata below the Cromerian.

SPECIMENS

1 2 1 1 1 2

Acknowledgments :—Thanks are due to Mr. M. P. Kerney for identifying the specimens listed above and for Information on the locations of the Sizewell and Aldeburgh exposures from Mr. H. E. P. Spencer.