GASTEROPODA. 



Synonym, Amberleya,* Morris and Lycett. 

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

 almost tnrriculated ; surface ornamented by longitudinal plica- 



Fig. 14. Eucydus goniatus, Desl.. 



tions and nodes; aperture oval, angular above; lip semi- 

 circular, thin ; columella flattened, imperforated. 



Fossil, 23 species. Upper Lias — Kelloway Eock. Englapd 

 France, Germany. 



[Family Solaiiid-5:] 

 Contains — 



SoLAEiTJM (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. 



Ajdeorbis (p. 266), Ciimus (p. 271), Discohelix (p. 253), 

 EuoMPHALUS (pp. 267, 346), BiFRONTiA (p. 253), Platystoma 

 (p. 254), PHAJN^EROTiiajs (p. 267), Macltjrea (p. 345). 



* This name was published in 1854, \)ut the genus was insufSciently characterise*!. 



c3 33 



