ANGARIA. 411 



beneath ; aperture more or less transverse, wider than 

 long. 



Genus ANGARIA, Bolten. 



Shell turbinate, sub discoidal, umbilicated, umbilicus 

 wide, pervious ; whorls rounded, scaly or spinose ; aper- 

 ture circular, entire, peritreme continuous, sub-reflexed, 

 without a marginal varix. 



Si/n. Cyclostoma, Lam. {olim). Delphinula, Roissy. 

 Delphinulus, Monif. Scalator, Gist. 



Ex. A. atrata, Chemnitz, pi. 46, fig. 5. Operculum, 

 A. Martinii, A. Adams., fig. 5, a, 5, h. Shell, A. del- 

 phinus, Liiuiceus, fig. 5, c. 



We have adopted Bolten's appellation for this genus, 

 in accordance with the law of priority, thereby prevent- 

 ing the necessity of using the name Cyclostoma, which, 

 however, was afterwards discarded by Lamarck for that of 

 Delphinula, suggested by Eoissy. 



Species of Angaria. 



aculeata, Reeve. formosa, Reeve. 



atrata, Chem. incisa, Reeve. 



calcarella, H.andA. Adams Martinii, A. Adams. 



(calcar, A. Adams). melanacantha, Reeve. 



coronata, A. Adams. nodulosa, Gmel. 



delphinus, Linn. sphserula, Kien. 



distorta, Linn. stellaris, Adams and Reeve. 



euracantba, A. Adams. Tyria, Reeve. 



