244 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I44 



Page 

 Bothryopncuslcs oricntalls Fourlau 41 



II, 12, Adapical, adoral view of U.S.N.M. 131268 from the Jurassic, 

 Lower Dhruma formation, Saudi Arabia. 

 Pseudosorella orhignyana (Cotteau) 67 



13, Left view of specimen in Museum National d'Histoire Naturelle, 

 Paris, from Corallian at Valfin (Jura), France, X li- Other views of 

 same specimen on plate 10, figures i, 2. 



Plate 10 



Pseudosorella orhignyana (Cotteau) 67 



I, 2, Adapical, adoral view of specimen in Museum National 

 d'Histoire Naturelle, Paris, from the Corallian at Valfin (Jura), 

 France, X li. Side view of same specimen on plate 9, figure 13. 



Pseudosorella syriaca (De Loriol) ' 68 



3, 4, Adapical, adoral view of lectotype in Museum d'Histoire 

 Naturelle, Geneve, Switzerland, from the Jurassic at Mar-Abda at the 

 bottom of the Ghazir Valley, Syria, X !• 



Calopygus carinatus (Goldfuss) 72 



5, 8, Adapical, adoral view, X li 5 6, right side, X 1 5 7> floscelle, X 3i 

 of U.S.N.M. 131279 from the Cretaceous (Cenomanian) at Le Mans 

 (Sarthe), France. 



Plate ii 



Catnpygus bargesii (d'Orbigny) /3 



I, 2, 3, Adapical, right side, adoral view of specimen in Lambert 

 Collection, Sorbonne, Paris, from the Cretaceous (Cenomanian) at 

 La Badoule, France, X I- 

 Phyllobrissus gresslyi (Agassiz) yy 



4, S, Adapical and adoral view of U.S.N.M. 131275 from the Lower 

 Cretaceous (Neocomian) at Auxerre (Yonne), France, X li- 



Phyllobrissus cerceleti (Desor) 77 



6, 7, Adapical and adoral view of Lambert's (1892, pi. 4, fig. 18) 

 figured specimen in the Museum National d'Histoire Naturelle, Paris, 

 from the Lower Cretaceous (Aptian) at Grandpre (Ardennes), X li- 



Pygaulus coucensis Demoly and Lambert 80 



8, 9, Adapical and adoral view of holotype in Lambert Collection, 

 Sorbonne, Paris, from the Lower Cretaceous (Neocomian), at St. Jean 

 de Couz, Savoie, France. 



Pygaulus dcsnwulinsii Agassiz 80 



10, II, 12, Adapical, right side, adoral view of U.S.N.M. 19554 from 

 the Lower Cretaceous (Barremian) at Lusan (Gard), France, X li, 

 photographed under glycerine. 



Plate 12 



Pygorhynchus obovafus (Agassiz) 84 



I, 2, Adapical and adoral view of lectotype in Museum of Comparative 

 Zoology, Harvard, No. 772, from the Lower Cretaceous (Neocomian) 

 at Mormout near Lasarrez, Switzerland, X i- 



