PLATE 3 
Fics. 1 a-d. Lacunosella multiplicata (Quenstedt). ‘‘ Weiss Jura gamma’”’. Thier- 
ingen, Germany. Collection of the University of Tiibingen. 
Fics. 2 a-c. Lacunosella trilobataeformis Wisniewska. ‘‘ Malm alpha/beta’’. Riissel- 
bach bei Grafenberg, Germany. B.M. BB. 45160. 
Fic. 3. Lacunosella trilobata (Zieten). Lower Volgian, (“Malm epsilon”’). Wittis- 
lingen, Germany. B.M. BB. 44143. ‘ 
Fics. 4 a-d. L. trilobata (Zieten). ‘“‘ Kimmeridgien’’. Steinweiler bei Nattheim, Ger- 
many. Collection of the Naturhistorisches Museum, Basel. no. L 1691. 
Fics. 5 a-c,6a-d. L. trilobata (Zieten). Details as fig. 3. B.M. BB. 44144-5. 
Fics. 7 a-d. ‘“* Rhynchonella”’ pyrenaei sp. nov. Holotype. Oxfordian. Pic du Gar 
near Pau (Basses Pyrénees), France. B.M. BB. 45161. 
