intermedia, Sow., occur dispersed more or less abundantly throughout its thickness. The greater number were obtained from near the top of the sands, or from the thin layer of sand at F, where they lie crowded together, at intervals, to a depth of many inches.
Fossils of Sands with Lingula.
Avicula media, Sow.
Ostrea flabellula, Lam.
Pinna affinis, Sow.
—, sp.
Cardita planicosta, Lam., var.
—Brongniartii, Mant.
—, sp.
Cardium (Protocardium) Wateleti, Desh.
—, sp. (small species).
Corbula, three species,
Cytherea proxima, Desh.
—orbicularis, Desh.
—portsmeuthiensis, Edw. MS.
—pseudo-orbicularis, Edw. MS.
Mactra, sp.
Modiola elegans, Sow.
Nucula gracilenta, S. V. Wood.
—striatella, S. V. Wood.
Panopaea intermedia, Sow.
Pholadomya virgulosa, Sow.
Psammobia Edwardsi, Morris.
Syndosmya (Tellina) splendens, Sow.
Teredina personata, Lam.
Lingula tenuis, Sow.
Aporrhais Sowerbii, Mant.
Bulla constricta, Sow. ?
—sulcatina, Desk.
Calyptraea trochiformis, Sow.
Cancellaria laeviuscula, Sow.
—, sp.
Cassidaria diadema, Desh., var.
—substriata, Edw. MS.
Chemnitzia tenuiplica, Edw. MS.
Chrysodomus bifaciatus, Sow.
Fusus, sp.
, sp. (small species).
, sp.
Pisania sublamellosa, Desh.
, sp. nov,
Leiostoma globatum, Desh.
Murex coronatus, Sow.
Natica labellata, Lam.
—splendida, Desh.
Natica portsmeuthiensis, Edw. MS.
—subdepressa, Morris, var.
—microstoma, Sow. ?
—lignitarum, Desh.
Pleurotoma helix, Edw.
—stena, Edw.
—(six to ten other species).
Pseudoliva fissurata, Desh., var. ?
—sulcifera, Edw. MS.
Pyrula Smithii, Sow.
—tricostata, Lam.
—Greenwoodii, Sow.
Rostellaria lucida. Sow.
Scalaria undosa, Sow.
—(small species).
Sigaretus clathratus, Recl.
Skenea, sp.
Solarium bistriatum, Desh.
— —, var.
-, sp.
Triton Morrisii, Edw. MSS.
Trophon tuberosum, Sow.
Turritella sulcifera, Desh.
—imbricataria, Lam.
—Meyerii, Edw. MS.
—terebellata, Lam.
Voluta elevata, Sow.
—depressa, Lam.
—nodosa, Sow.
—, sp.
Nautilus centralis, Sow.
—Sowerbii, Wetk.
—imperialis, Sow.
Flustra.
Bryozoon.
Hemiaster Bowerbankii, Forb.
Cliona, spec. nov.
Palaeocorystes glabra, Woodw. MS.
Xanthopsis Leachii, Bell.
Rhachiosoma bispinosa, Woodw. MS.
—echinata, Woodw. MS.
Nipadites.
Wood (and fragments of plants ?),
These strata have been exposed in open cuttings from one to two thousand feet in length.
In first looking over the fossils of the " Sands with Lingula," one cannot but be struck with the apparent mixture of London- Clay fossils with species which are usually considered characteristic of higher or lower formations. The two species which occur the most
