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GASTEROPODA OF THE INFERIOR OOLITE. 



size; these have been referred to " Littorina." In the majority of cases they do 

 not seem to have the Purpwina-tike 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. 



Ambeeleya. 



Omata-growp 



Eucyclus-section : 



Amberleya capitanea, Mtinst. 



— ornata, Sow., typical 



— — var. spinulosa, Miinst. 



— — var. abbas 



— — var. horrida 



— geynmata, Lyc. 



— densinodosa, sp. n. 



— Meriani, Goldf. 



— cygnea, sp. n. 



— goniata, Desl. 



— Orbignyana, sp. n. 



— MurcMsoni, Mi'inst. 



— Obornensis, sp. n. 



— pagodiformis, sp. n. 



— generalis, Miinst. 

 Trochus- section : 



Amberleya species, cf. Trochus anaglypticus, Miinst. 



— biserta, Phil., A. 



— — — B. 

 Turbo-section : 



Amberleya Milleri, Wright, MS. 



— turbinoides, sp. n. 



— Stoddarti, Tawney. 



— elongata, sp. n. 



— Dumlriensis, Tawney. 



Goniata-growp 



Littokina {? Echinella in part). 



Littorina praetor, Goldf. 

 — polytimeta, sp. n. 



