108 



107 



109 



110 





112 



111 



Figs. 107-112. — 107, Pctalohrissus cubensis (Weisbord) : Adoral plate arrangement of USNM 131265a, fron 

 the Upper Cretaceous (Senonian) at Rio Seco, Medina County, Tex., X 2, 108, 109. Pctalohrissus setifensis Cot 

 teau) : 108, Apical system of specimen in Museum National d'Histoire Naturelle, Paris, from the Upper Cre 

 taceous (Maestrichtian) at Kef el Matrek, south of Medjes, Dept. of Constantine, Algeria, X 15; 109, pny' 

 lode of ambulacrum I of USNM 131261 from the Upper Cretaceous (Maestrichtian) at El Kantara, Algeria 

 X IS. IIO, III, Stiamafot^vaus lambcrti Besairie: IIO, Apical system of specimen in collection of General Collignoi 

 from the Upper Cretaceous (Campanian) at Ores Andrakaraka, INIadagascar, X 10; III, floscelle of same sped 

 men, X 3. II2, Pygidiolampas curynota Clark: Phyllode of holotype (No. 3540) iri the Museurn of Comparativi 

 Zoology, Harvard, probably from the Upper Cretaceous (Campanian) from the Peedee formation, South Caro 

 lina, X 8. 



126 



