276 GASTEROPODA OF THE INFERIOR OOLITE. 
size; these have been referred to ‘‘ Littorina.”’ In the majority of cases they do 
not seem to have the Puwrpwrina-like mouths exhibited in the early stage of 
many Amberleyas. 
The following is the classification of the Inferior Oolite species described in 
the sequel, arranged on the principles already indicated, 
AMBERLEYA. 
Eucyclus-section : 
Amberleya capitanea, Miinst. - 
— ornata, Sow., typical 
— — var. spinulosa, Mist. 
— — var. abbas 
-— — var. horrida Ornata-group 
“= gemmata, Lye. 
— densinodosa, sp. n. 
— Meviani, Goldf. 
_ cygned, Sp. N. 
— goniata, Desl. 
— Orbignyana, sp. n. 
—_ Murchison, Minst. 
— Obornensis, sp. n. 
— pagodiformis, sp. n. 
—— generalis, Minst. 
Trochus-section : 
Goniata-group 
Amberleya species, cf. Trochus anaglypticus, Minst. 
se biserta, Phil., A. 
a — — B. 
Turbo-section : 
Amberleya Milleri, Wright, MS. 
— turbinoides, sp. n. 
_ Stoddarti, Tawney. 
— elongata, sp. n. 
— Dundriensis, Tawney. 
Lirrorina (? Echinella in part). 
Littorina pretor, Goldf. 
—  polytimeta, sp. n. 
