398 Mr. Weaver on the Structure of the South of Ireland^ 
In Wentock limestone. 
CoNCHiFERA {continued). 
Crinoidea 4. 
Marsupiocrinites ctelatus. 
Hypanthocrinites decorus. 
Dimerocrinites decadactylus, D. 
icosidactylus. 
PoLYPARIA 17 . 
Escharina ? angularis. 
PMlodictya lanceolata. 
Horner a crassa. 
Berenicea irregularis. 
Eschar a? scalpellum. 
Blumenbachium globosum. 
Millepora repens. 
Syringopora reticulata, S. bifur- 
cata, S. filiformis? S. caespi- 
tosa ? 
Monticularia conferta. 
Acervularia Baltica. 
Cladocora sulcata. 
Turbinolopsis bin a. 
Verticillopora ? abnormis. 
Cnemidium tenue. 
Sedis Incert^ 1. 
Cornulites serpularius. 
31 Species. 
In Eifel limestone. 
CoNCHiFEEA {eontiiiued). 
Pholadomya radiata. 
Isocardia Huniboldtii, I. antiqua. 
Crinoidea 13. 
Eugeniocrinites mespiliformis. 
Pentacrinites priscus. 
Platycrinites ventricosus. 
JVIelocrinites gibbosus. 
Rhodocrinites verus, R. giratus, R. 
quinquepartitus, R. canalicu- 
latus, R. crenatus. 
Cupressoerinites crassus, C. graci- 
lis, C. tesseratus. 
Eucalyptocrinites rosaceus. 
PoLYPARIA 6. 
Anthophyllum bicostatum. 
Achilleum cariosum. 
Manon cribrosum. 
Scyphia cornu-copiee. 
Coscinopora placenta. 
Lithodendron bicostatum. 
Sedis Incert.® 0. 
71 Species. 
From the preceding tables it results that we have 
In the Wenlock limestone. 
Common species 42 
Common genera but di- 
stinct species 64 
Distinct genera with di- 
stinct species 31 
Distinct species — 95 
Wenlock — total species. . 137 
In the Eifel limestone. 
Common species 42 
Common genera but di- 
stinct species 96 
Distinct genera with di- 
stinct specif 71 
Distinct species — 167 
Eifel — total species 209 
From the foregoing review, and the resulting numbers, it 
becomes clearly apparent, that M. Dumont was not justified 
in pronouncing the Wenlock and Eifel limestones as of the 
same formation. It is, however, also evident that they are 
akin in a certain degree, the species which are common to 
both limestones being to the total number in each, in the 
Wenlock limestone as 4 to 13 nearly, that is, forming about 
