246 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I44 



Page 



Parapygus cassiduloides Gauthier 100 



7, 8, 9, Adapical, left side, adoral view of lectotype in Museum 

 National d'Histoire Naturelle, Paris, from the Upper Cretaceous 

 (Senonian) at Djebel Aidoudi, Tunisia, X li- 

 10, Floscelle of another specimen from same locality, X 3i- 



Plate 15 



Parapygus coquandi (Cotteau) 100 



I, 2, Adapical and adoral view of specimen in ficole National 

 Superieure des Mines, Paris, from the Upper Cretaceous (Senonian) 

 at Djelfa, Algeria, X li- 

 Parapygus longior (Cotteau and Gauthier) 103 



3, Floscelle of specimen in Lambert Collection, Sorbonne, Paris, 

 from the Upper Cretaceous (Senonian) at Aftab, Persia, X 5- 



4, Adapical view of same specimen, X !• 



Arnaudaster gauthieri Lambert 105 



5, 6, Adapical, adoral view of holotype in the Lambert Collection, 

 Sorbonne, Paris, from the Cretaceous (Cenomanian), Mantclliceras 

 mantelli (Sowerby) zone, near Fumel, Aquitaine, France, X li- 



7, Right side of same specimen, X |. 



Parapygus nanclasi (Coquand) 100 



8, 9, Adapical, adoral view of specimen in ficole National Superieure 

 des Mines, Paris, from the Upper Cretaceous (Senonian) at Epagnac 

 (Charante), France, X !■ 



Petalobrissus trigonopygus (Cotteau) 120 



10, Adapical view of specimen in Museum National d'Histoire 

 Naturelle, Paris, from the Upper Cretaceous (Santonian) at Ain 

 Aourou, Algeria, X i^. 



Plate 16 



Petalobrissus djeljensis (Gauthier) 120 



I, 2, Adapical and adoral view of holotype in the Lambert Collection, 

 Sorbonne, Paris, from the Upper Cretaceous (Santonian) at Djelfa, 

 Algeria, X li 



3, Floscelle of same specimen, X 3- 



Petalobrissus lejebvrei (Fourtau) 124 



4, 5, 6, Adapical, adoral, right side of holotype (No. 25408) in Geo- 

 logical Museum, Cairo, Egypt, from the Upper Cretaceous (Turonian) 

 at Abu Roash, Egypt. X I- 



Petalobrissus ammonis (Fourtau) 123 



7, 8, 9, Adapical, adoral, and right side of holotype (No. 25410) in 

 the Geological Museum, Cairo, Egypt, from the Upper Cretaceous 

 (Turonian) at head of Wadi Tarfa, Egypt, X H- 



Petalobrissus setifensis (Cotteau) 125 



10, II, 12, Adapical, adoral, left side of specimen in Museum National 

 d'Histoire Naturelle, Paris, from the Upper Cretaceous (Maestrich- 

 tian) at Kef el Matrek, Dept. of Constantine, Algeria, X li- 

 13, Floscelle of same specimen, X 3. 



