399 
Devon and Cornwall, Belgium, the Eifel, 
one third part; and in the Eifel limestone as 4 to 20, or one 
fifth part. Again, in the Wenlock limestone, the distinct 
species are to the common species as 9 to 4, or 2^ to 1 ; and 
in the Eifel limestone as 16 to 4, or 4 to 1. 
M, Bejrich has made the remark, that the greywacke and 
slate country which supports the Eifel and Belgian lower 
limestone, contains for the greater part the same fossils as 
are found in this limestone; and he adds, that among them 
occur a considerable number of species which are common to 
the carboniferous limestone, and in this remark he is joined 
by M. Dumont, as already observed : that this view is cor- 
rect, the following table which I have drawn up will suffi- 
ciently prove. 
V. Table of fossils common to the Eifel limestone and the 
carboniferous limestone — 47 species. 
Localities in carboniferous limestone. 
Crustacea. 
Calyraene macrophthalma, Al. Brong. Richelle, Liege. 
Mollusca. 
Heteropoda — ■ 
Bellerophon unclulatus, Goldf. Chimay, Schwelm. 
B. apertus, Sow Richelle, Bristol, Fermanagh. 
B. striatus, Goldf. Chimay, Ratingen. 
Cephalopoda — 
Orthoceras armulatum, Sow King’s County. 
O. giganteum, Sow Closeburn. 
CoNCHIFERA. 
Terebratula pugnus and lateralis, Sow. Ratingen, Derbyshire, Dublin. 
T. crumena. Sow Derbyshire. 
T. lacLinosa (T. Wilsonii, Sow.') 
Dalm Liege. 
T. Mantiae, Sow Ireland. 
T. acuminata, Sow Ratingen, Yorkshire, Derbysh. 
T. diodonta, Dalm Ratingen. 
T. amygdala, Goldf Vise. 
T. saccLilus, Sow ^ Derbyshire, Rutherglen. 
Orthis testudinaria% Dalm Croraford in Westphalia. 
Spirifera cuspidata (S. elevata, Dalm.) 
Sow Ratingen, Bristol, Derbyshire. 
S. octoplicata (S. crispa, Dalm.), Derbyshire, Castleinaine in 
Sow Kerry. 
S. oblata. Sow. Richelle, Vis^ Dublin. 
S. glabra et obtusa (Terebratula 
laevigata, SchloL), Sow Richelle, Ratingen, Derbyshire. 
S. pinguis (S. laevicosta, Goldf), 
Soiu Liege, Dublin. 
S. attenuata. Sow Liege, Dublin, Clonmell. 
S. striatLila, Goldf. Ratingen. 
S. canalifera, Goldf. Ratingen, Vise, Dublin. 
* See Professor Bronn in Lethcea Geognostica, p. 82. This is, I believe, 
the only instance on record of an Orthis having been found in the carbon- 
iferous limestone. 
