102 BULLETIN OF THE 



Leioceras discoides Hyatt. 



Amm. depressus Schlot., Pet, p. 80, No. 80. 



Avvn. discoides Ziet . Verst. Wurt., p. 21, pi. 16, fig. 6. 



Amm. depressus Ziet., Verst. Wurt., p. 7, pi. 5, fig. 15. 



Loc. Milhaml, Mende, Plateau de Larzac, and Balingen; Coll. L. de 

 Koninck ami Dr. Krantz. 



Bruguiere (Eneyclop., 1789), having described a different species by the 

 name "depressus," Zieten's name "discoides" is necessarily the correct 

 name of this species. 



Leioceras eumulatum Hyatt. 



Amm. bicarinatus Ziet., Verst. Wurt., p. 21, pi. 15, fig. 9. 



Loc. Milhaud, Laumiere, Mende, Plateau de Larzac (Dep. de l'Aveyron), 

 Montpellier, and Zillhausen ; Coll. L. Agassiz, L. de Koninck, Dr. Krantz, 

 and M. Boucault. 



Zieten's "bicarinatus" differs specifically from Miinster's figure, Beit, 

 zur Pet., v. 4, p. 138, pi. 15, fig. 30, and therefore it becomes necessary to 

 adopt a new name for this species. 



Leioceras concavum Hyatt. 



Amm. concavus Sow., Min. Conch., v. 1, p. 215, pi. 94, fig. 2. 



Loc. Semur, Salins, and Heiningen ; Coll. Dr. Krantz and M. Boucault. 



Leioceras capellinum Hyatt. 



Amm. capellinus Schlot., Pet., p. 65. 

 Amm. capellinus Quens'dt, Die. Ceph., p. 206, pi. 7, fig. 2. 

 Amm. lythensis lineatus Quens'dt, Die Ceph., p. 107, pi. 7, fig. 1. 

 Loc. Metzingen and Ilolzinunden ; Coll. Dr. Krantz. 



