PLATE XXV. 
SILURIAN SPECIES. 
Fie. 
|—2. Cyrtia? nasuta, Lindstrém, sp. Wenlock Limestone; Dudley. 1. In the 
British Museum. 2. In the Rev. H. G. Day’s 
Collection. 
3—D5. Triplesia? montlifera, M‘Coy, sp. Caradoc; Chair of Kildare, Ireland. 
4 and 5. Mus. Geol. Survey. 
6. Atrypa? apiculata, Salter, MS. Caradoc ; Chair of Kildare. Mus. Geol. 
Survey. 
epic Atrypa? incerta, Dav. Upper Llandovery ; Penhill, Ayrshire. 
9,10,11. Zriplesia Grayie, Dav. 9, 10. Penwhapple Glen, Ayrshire. 11. Pistyll 
Deroi, Llandeilo. Mus. Geol. Survey. 
12—15. Eichwaldia Capewelli, Dav. 12—14. Wenlock Limestone; Dudley. 
12a. Specimen enlarged. 126. Sculpture, greatly 
magnified. 13a. Section of an American specimen 
(Lichwaldia corallifera, Hall), after Prof. J. Hall. 
15. Internal cast, enlarged. Woolhope Limestone ; 
between Alfrick and Crews Hill. Mus. Geol. Survey. 
LG: Porambonites intercedens, Pander, var. filosa, M‘Coy. Caradoc ; Dunabrallin, 
Waterford. Mus. Geol. Survey. 
M9. is ,, ? Caradoc; Wrae Quarry, Peebleshire. Woodwardian 
: Museum, Cambridge. Specimens so named by Prof. 
M‘Coy. 
