On the Fossil Fishes of the Curboniferous Limestone Series of Great Britain. 545 
freshwater limestone, containing ostracoda and other organisms belonging to 
species that occur in the Upper Coal Measures, alternate with the coal beds and 
marine limestone. The fossils of the marine limestones and shales are numerous, 
and consist of plants, foraminifera, sponges, corals, crinoids, crustacea, polyzoa, 
shells and fish remains. 
The Calciferous Sandstone Series are 1,500 to 1,800 feet in thickness and consist 
in the upper division of a great thickness of bedded traps and ash beds, on which 
occur occasional beds of sandstone, impure coal and shale, enclosing plant and fish 
remains. Conformably with the ash beds, in descending order, are the Ballagan 
Limestone series, consisting of numerous dolomitic limestones, greyish white sand- 
stones, flagey sandstones, shales and marls, which contain remains of plants and 
occasional fish scales which indicate fresh water origin. Beneath the Calciferous 
Sandstones are the Old Red Sandstones. 
List or GENERA AND Species, witH LocALITIES. 
Salop, 
marke : Kendal, Ww 
= Armagh . Oreton ae, Derby- ie Lowick 
Name. (Ireland). Bristol. marl ? 1Yorkshire. jit, West- Scotland: NW. y 
iavdton, moreland. 
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HYBODONTID &. 
Ctenacanthus major, Agass., x S| = = = x = 
9 tenuistriatus, Agass., x x - = a x é 
os heterogyrus, Agass., - = = = = = 3 
9 brevis, Agass., x x = — = x = 
5 denticulatus, M‘Coy, - = = = = a “J 
3 limaformis, Davis, . - = = L. = = a 
salopiensis, Davis, . x = = = = = 
dubius, Davis, 
lwvis, Davis, . 
plicatus, Agass., 
sulcatus, Davis, 
pustulatus, Davis, . 
crenulatus, Aga-s 
9 (Onchus) rectus, Agass , 
Acondylacanthus Colei, Davis, . 
tuberculatus, Davis, . 
) (Ctenacanthus) distans, M‘Coy, 
tenuistriatus, Davi ho 
» (Leptacanthus) juncens, M‘Coy, 
Jenkinsoni, M‘Coy, 
attenuatus, Dayis, 
Asteroptychius ornatus, Agass., 
Compsacanthus carinatus, Davis, 
Cosmacanthus marginalis, Davis, . 
carinatus, Davis, 
carbonarius, M‘Coy, 
priscus, Davis, 
Lispacanthus retrogradus, Davis, . 
gracilis, Davis, 
Dipr iacanthus Stokesii, Agass. 7 
Homacanthus microdus, M Coy, . 
or macrodus, M‘Coy, 
Gnathacanthus triangularis, Davi is, 
striatus, Davis, : . 
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