11 
Rliynchonella lacunosci, Schlot. One or two specimens of this 
species have been found in the Lower Calcareous Grit of Oliver’s 
Mount near Scarborough, and in Beedale above Wykeham. 
Terebratula ins ign is, Schubler, var. Maltonensis, Oppel. This 
species appears to be confined to the Coral-Rag or Cidaris 
florigemma- zone. It is somewhat locally distributed. Good 
specimens have been found at Whitewall near Malton, and at 
Oswaldkirk. In the Echinoderm-bed at North Grimston it 
has occasionally been found in the soft and almost chalk-like 
limestone associated with the marly Oolite in which the sea- 
urchins are so plentiful. Found also on Cawton Heights, and 
near Helmsley. Generally speaking, this fossil may be said to 
occur in the intercoralline brash of the Cidaris jiorigemma-zone . 
Lingula oralis, Sow. Has been found by Mr. Hudleston in 
the Kimmeridge clay of Burdale, and by Mr. Walker in the 
same formation at Speeton Cliffs. 
We add to our list, on the authority of Mr. Judd, (Proc. Geol. 
Soc., Yol. xxiv, page 224,) Discina latissima, Sow., and Rliyn- 
chonella inconstans, Sow., from the Kimmeridge clay of Speeton 
Cliffs. 
It is difficult to explain why the great coral reefs of the 
Middle Oolite in England were unfavourable to the development 
of Braehiopoda, which are so abundant in the same formation 
in Germany. 
The Inferior Oolite of the South of England, which was 
probably deposited under somewhat similar conditions, is also 
crowded with Braehiopoda. 
The following species of Braehiopoda have as yet only been 
found in Yorkshire, viz., Terebratula Fileyensis , Walk., Tere~ 
bratula insignis, var. Maltonensis, Oppel., Terebratula triline at a, 
Y. and B., Walclheimia bucculenta, Sow., Waldheimia Hudlestoni, 
Walk., Waldheimia sp. n., from the Yellow Sands below the 
Dogger. 
The following table shows the distribution of the species. 
