Mineralogy and Geology. 275 
lites) are only known here and in th 
India: one genus ( Gleichenites) I have provisionally used for the Pecop- 
and one species, the Sphenopteris germana (M’Coy), is scarcely to be 
distinguished from the common Pecopteris Murrayana (Br.) of the 
hegative fact, that among the large quantity of remains of plants which 
T have examined from this district, not a trace has been observed of any 
of the characteristic carbonif genera—not a trace of Lepidodendron 
. : 2 er . * "4 : 
or any allied plant—not a trace of Sigi/laria, Favularia, Stigmaria, or 
evidence now would go, with the admitted identity of the walls of the 
basins and the general analogy of the sections, to prove them all of 
one age 
In the underlying rocks I have been able to determine 83 species of 
animal remains, of which 14 are Zoophyta, 3 Crinoidea, 4 Crustacea, 
25 Brachiopoda, 24 Lamellibranchiata, 6 Gasteropodo, 4 Pteropoda 
and 3 Cephalopoda (including Bellerophon). Of these, 4 genera and 
82 species are figured and described as new. Those 83 species belong 
