NO. 3 CASSIDULOID ECHINOIDS — KIER 245 



Page 



3, 4, Adapical and adoral view of paratype from same locality, X I- 



5, Adapical view of specimen in Lambert Collection, Sorbonne, Paris, 

 from the Lower Cretaceous (Neocomian) at Venoy, X |. 



Parapygus toucasanits (d'Orbigny) lOO 



6, Adapical view of specimen in ficole National Supericure des Mines, 

 Paris, from the Upper Cretaceous (Turonian), at Beausset (Var), 

 France, X i- 



Pygorhynchiis minor (Agassiz) 83 



7, 8, Adapical views of two specimens in ficole National Superieure 

 des Mines, Paris, from the Lower Cretaceous (Neocomian) at Maralles, 

 France, Xii- 



Pygorhynchiis cylindricus (Desor) 83 



9, 10, Adapical views of two specimens in the ficolc National 

 Superieure des Mines, Paris, from the Lower Cretaceous (Aptian) 

 from Le Bimet, France, X is- 



Plate 13 



Pygopistcs coquandi (Cotteau) 86 



I, 3, Adapical and adoral view of specimen in the Museum National 

 d'Histoire Naturelle, Paris, from the Cretaceous (Cenomanian) of 

 Tunisia, X li- 



2, Floscelle of same specimen, X 5- 



4, S, 6, Adapical, right side, adoral view of the lectotype of Pygopistcs 

 exccntricus (Gauthicr), herein considered a synonym of P. coquandi, 

 from the Cretaceous (Cenomanian) at El-Aieicha, Tunisia, in the 

 Museum National d'Histoire Naturelle, Paris, X li- 



Hypopy gurus gaudryi Gauthier 88 



7, 8, Adapical and adoral view of specimen in Lambert Collection 

 (No. 1 170), Sorbonne, Paris, from the Cretaceous (Cenomanian) at 

 Djebel Cehela, Tunisia, X i- 



Clypeopygus paidtrci (Cotteau) 71 



9, Adapical view of specimen in Lambert Collection, Sorbonne, Paris, 

 from the Lower Cretaceous (Neocomian), at Maralles, France, X 3. 



Plate 14 



Plagiochasma olfersii (Agassiz) 90 



1, Adapical view of specimen in the £colc National Superieure des 

 Mines, Paris, from the Lower Cretaceous (Neocomian), exact locality 

 not known, X li- 



2, 3, Right side and adoral view of specimen in Museum of Com- 

 parative Zoology, Harvard, from the Lower Cretaceous (Neocomian) 

 at Censeau, Billecul et Mieger (Jura). 



Parapygus cotteauanus (d'Orbigny) loi 



4, 5, Adapical and adoral view of specimen in Lambert Collection, 



Sorbonne, Paris, from the Upper Cretaceous (Truonian) at Les 



Martigues, France, X I- 

 6, Floscelle of same specimen, X 3- 



