76 
TOMES : MESOZOIC CORALS OF THE COUNTY OF YORK. 
MONTLIVALTIA GUETTARDI Blainv. 
Montlivaltia giiettardi Blainv. Diet, des Sci. Nat., T. LX.^ 
p. 302. 1830. 
Montlivaltia guettardi Chap, et Dewal. Mem. Cour. AcacL 
Beige, T. XXV., p. 264, pi. 33, fig. 6. 1854. 
Considerable doubt exists respecting this as a Yorkshire, and 
indeed as a British species. Specimens which were in the col- 
lection of Professor Tate, and said to have been collected at 
Redcar, which, with Montlivaltia haimei, came into the hands 
of the present writer, prove on examination to be identical with 
Montlivaltia mucronata. They have so much the colour and 
general aspect of Warwickshire specimens of the latter species 
as to suggest that some mistake has been made as to locality. 
If, however, they are really Yorkshire examples, it is more than 
probable that 2Iontlivaltia guettardi is not found in that county. 
The examination of undoubted Yorkshire specimens is most desir- 
able. 
Montlivaltia haimei Chap, et Dewal. 
Montlivaltia haimei Chapius et Dewalque. Mem. Cour. 
par I'Acad. Belgique, T. XXV., p. 262, pi. 38, fig. 5. 
1854. 
A great many specimens of this common and well-marked 
species have been taken from the Lower Lias of Yorkshire, and 
may be seen in the York and other museums, as well as in 
private collections. A considerable number from Redcar, which 
were in the collection of Professor Tate, are now before me, all 
of which have the regular and numerous denticulations on the 
septal edge which characterise typical examples. 
11. — Oolitic species. 
Genus Gonioseris Duncan. 
The corallum is simple, dome shaped or pyramidal, and has six 
very prominent angles extending from the apex to the base, and 
formed by a great development of the primary septa. 
