SALPACEA. 267 



EUDISTES. Lam. A famUy of tlie order Conchifera Mono- 

 myaria, Lam. the shells of which are described as irregular, very 

 inequivalve, without distinct umbones ; the ligament, hinge and 

 animal entirely unknown. The shells contained in this family 

 may be thus distinguished. 



1. Caloeola. Large valve conical ; attached by a flat space 



between the umbones, which form the extremities of the 

 shell. Fig. 194. 



2. HipPiJEiTES. Large valve cylindrical, with two internal 



lobes or varices. Pig. 198. 

 2. Sph^eulites. Large valve attached, including Radiolites, 

 Birostrites is proved to be the cast of a Sphserulites. 

 Kg. 193, 196. 

 4. HiPPOSTTX. Flat valve attached, upper valve conical. Fig. 

 199, 200. 

 B,TJDISTES. Bl. The second order of the class Acephalophora, 

 Bl. containing the genera Sphgerulites, Crania, Hippuritesj 

 Eadiolites, Birostrites and Calceola. 

 EUDOLPHTJS. Lam. Monooebos, Auct. 

 EUFOUS. Eeddish brown. 

 EUGOSE. Eough, rugged. 

 EUPELLAEIA. Fl. de Belvue. An unfigured shell placed by 



Pe Biainville in a division of the genus Venerirupis. 

 EUPICOLA. Fl. de Belvue. A sheU described by De Biainville 

 as an equivalve, terebrating species of Anatika. A. rupicola., 

 Lam. 

 SABINEA. a genus of" shells resembhng small species of 



LiTTOBiNA, as L. Ulvse, &c. of our shores. 

 SADDLE OYSTEE. Placuna Sella, so called on account of ^ 

 resemblance in shape to a saddle ; the part near the umbones 

 being flat, and the ventral margins being turned up in a sort 

 of fluting or peak. 

 SAGITTA. {An arrow.') An ancient name for Belemnites. 

 SALIENT. (Saliens.') Jutting out, prominent. 

 SALPACEA. Bl. The second family of the order Heterobran- 

 chiata, Bl. containing no genera of shells. 



