

//, T()rl>., IS II , :ni'l 7'< /- '/ 



iionym-. -1' 



Submenus r>Ki IM,M \i.\\ 



Sln-11 diacoidal, planorbiform ; \\lmiU :,, 

 milar. Opercnlinn as in T<>rini:i r< -! rieted. 



Me<l / 



Submenus GtYRiacUB, Til>eri. 1SG8. 

 Slu-ll tnrbinated, conically turricnlated, umbilici, 

 rounded, oninulatcd, spirally sulcate and ribto 

 circular, the simple margins unitrl by a Calloui 

 culinn cxtc'i-nallv flat and mult i-piral, furnislM-il intnually with 

 :,tral stylifonn process (I'l. 1. liir- 17). M< 



Subgcmis p]piscYNTA, Morch, 1 

 Slu-ll glassy; periphery with a doul.le Beriefl 

 simple, direct. 



Subgenus CLIMACOPOMA, Fisch.. 1 \ 



This subgeneric name was proposed l.y Ii 

 of Conchyliologie, Fasc.,viii,p. 714)upon grounds pur- 

 thetical. When Deshayes found in the Paris Ha*in a i 

 operculum having all the characters of tin- "pnciilum ot 

 recent Torinia, he suggested that perhaps it belonged to 5 

 rium patulum, Lam., but never succeeded in tindiu- it in | 

 tion. Dr. Fischer, anticipating the discovery of BU 

 with the shell of Solarium and the operculum of i 

 proposed for the discovery, yet to be made, tin- 



generic name. 



Genus OMALAXIS. Desh.. 1830. 



Shell subdiscoidal. Hat or slightly ^"" ( - 

 carinatcdat the periphery : peristomc not < 

 wide and deep. Operculum multispiral. 

 1832, ia a synonym. Coa*t of New I 



Eocene. 



(Euomphalu 



(Jciui^ orilll.KTA. Vanux< 

 Shell discoidal, planorbiform; whorUi aumerow, 



very convex. Fossil, PaleOZOlO. 0. l*ta, Hall- 



(Struct, and Syst, Conch., I'l. 65, ftg. 19-) 



