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114 PROCEEDINGS OF THE GEOLOGICAL SOCIETY.
collected as many of its fossils as circumstances permitted. These
amount to twenty-five species of shells and some fragments of car-
bonized wood ; but, with the exception of two Ammonites (A. Kce-
nigi and A, sublcBvis), they are either enumerated in the lists published
by Sir R. I. Murchison*, are undescribed species, or are too imper-
fect for satisfactory determination.
Eighteen of the shells are also found in different members of the
Jurassic (oolitic) series of England, and of these the following occur
in the unusually developed Kelloway Rock of Yorkshiref : —
Ammonites Gowerianus, Sow. Pecten lens, Sow.
Koenigi, Sow. Modiola cuneata, Sow.
subhevis, Sow. Trigonia clavellata, Sow.
Ostrea archetypa, Phil. Goniomya literata, Sow.
The Ammonites Kcenigi and A. sublcBvis are also associated in the
equivalent strata at Kelloways Bridge, Wilts., and, as well as the A.
Gowerianus^ in the contiguous Oxford clay of Chippenham. These
facts afford additional proof that the position long ago assigned to
the bed in question by Sir R. Murchison, who regarded it as the re-
presentative of the " pier stone" of Scarborough, is the correct one J.
Fie^. 1.
This marine deposit (Section fig. 1) is succeeded, in the descending
order, by the following strata : —
a. Coal (main seam), 3 feet.
h. Dark grey shale with seams of coal, 20 ft. 6 inches.
c. Seven or eight seams of black, bituminous shale, full of shells,
&c., and alternating with unfossiliferous partings of the same rock.
The fossils comprise detached scales o^ Lepidotus pusillus (sp. nov.)
and Pholidophorus cognatus (sp. nov.), Paludina conulus (sp. nov.),
Cyclas angulata, Sow., C. subglobosa (sp. nov.), C. rhomboidalis
(sp. nov.), C. solidula (sp. nov.), C. unioniformis (sp. nov.), and
Cypris granulosa^ Sow. There are also portions of an obscure plant,
and small fragments of carbonized wood. The thickness of the whole
is 5\ inches.
d. Shale like b, but without coal, 3 ft. 1 inch§.
e. Black, grey and green clays, including a layer of whitish argil-
laceous limestone. The fossils, which, although broken and disunited,
constitute at least one half of the mass, are Semionotus punctatus
(sp. nov.), S. minor (sp. nov.), Lepidotus pusillus (sp. nov.), Pho-
lidophorus cognatus (sp. nov.), Paludina conulus (sp. nov.), Perna
erecta (sp. nov.), P. obliquata (sp. nov.), Tellina muriatica (sp. nov.)

• Trans. Geol. Soc. 2nd Series, vol. ii. pp. 320 and 366.
  

t Prof. Phillips's ' Geology of Yorkshire Coast,' 2nd edition, p. Ill et seq. The
shell figured in this work as Rostellaria composita is (unless very inaccurately re-
presented) not identical with thefossilfromBrorasonaraedin * Mineral Conchology.'
+ Trans. Geol. Soc. 2nd Series, vol. ii. pp. 297-8, 316-7.
§ It being impracticable to subject the beds b and dto direct measurement, their