38S FOREIGN JURASSIC CLYPEL 



inclined, and almost vertical ; anibulacral petals less elongated than in the preceding 

 species ; base concave, much undulated ; mouth-opening excentral ; peristome with three 

 small lobes. Type of the species, T. 4. 



Formation. — " Marnes a Discoidees (Vesulien) du Kornberg pres Erick et de Hornusscn 

 (Argovie)." Desor. 



Collections. — Mas. Bale, MM, Moesch, Schmidlin. 



