GASTEROPODA. 



Synonym, Amberleya, * Morris and Lycett. 

 Shell very thin (without a nacreous layer?) ; spire elongated, 

 almost turriculated ; surface ornamented by longitudinal plica- 



lip 



England, 



Fig. 14. Eucyclus goniatus, Desl.. 



tions and nodes; aperture oval, angular above; 

 circular, thin ; columella flattened, imperforated. 



Fossil, 23 species. Upper Lias — Kelloway Eock. 

 France, Germany. 



[Family Solarid^] 

 Contains — 



Solarium (see p. 253). 



Sub-genera, Torinia, Gray. 



Philippia, Gray (p. 253). /Shell trochiform ; umbilicus small. 

 Fossil, 3 species. Miocene. America. 



Disculus, Deshayes. Shell discoid ; umbilicus very narrow, 

 inferior angle of the aperture extended and oblique. 



Adeorbis (p. 266), Cirrus (p. 271), Discohelix (p. 253), 

 Euomphalus (pp. 267, 346), Bifrontia (p. 253), Platystoma 

 (p. 254), Phanerotinus (p. 267), Maclurea (p. 345). 



* This name was published in 1854, but the genus was insufficiently characterised. 



c3 . 33 



