242 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I44 



Plate 4 



Page 

 Pygurus (Pyguropsis) noctlingi Dc Loi-iol 51 



I, 2, 4, Adapical, adoral, right side, X i^, adoral view photographed 

 under water ; 3, floscelle, X 3. photographed under water, of holotype 

 from the Cretaceous (Cenomanian) at Keft Akad, Ouadi Sanin (Liban), 

 in the De Loriol Collection in the Museum d'Histoire Naturelle, 

 Geneve, Switzerland. 

 Astrolampas productiis (Agassiz) 53 



5, 6, 7, Right side, adapical, adoral (under water) view of holotype, 

 X I, in Museum of Comparative Zoology, Harvard, Lower Cretaceous 

 (Neocomian), Mormont pres Lasarraz, Switzerland. 



Plate 5 



Pseudopy gurus letter oni Lambert 54 



I, 2, 4, Adapical, right side, adoral view of lectotype from Jurassic 

 (Sequanian) at Tonnerre (Yonne), France, in the Lambert Collection, 

 Sorbonne, Paris, X 5. 



3, Enlarged view of ambulacrum III of same specimen, X 3- 



Clypeus agassisi (Wright) 34 



5, Adapical view, photographed imder water, of specimen in Museum 

 of Comparative Zoology, Harvard, from Jurassic, Upper Inferior 

 Oolite, Broad Windsor, Dorset, England, X I- 



Plate 6 



Nucleolites scutatus Lamarck 59 



I, 2, 3, Adapical, right side, adoral view of specimen U.S.N.M. 19546a 

 from the Upper Jurassic (Oxfordian) at Villers, France, photographed 

 under water, X li- 

 Nucleolites hugi (Agassiz) 57 



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

 Naturelle, Paris, X |. 



Nucleolites gracilis Agassiz 63 



5, 6, Adapical and adoral view, photographed under glycerine, of 

 holotype in Museum of Comparative Zoology, Harvard, No. 988, from 

 Upper Jurassic (Upper Ocfordian) at Raedersdorf, Switzerland, X li^ 



Nucleolites elongatns Agassiz 63 



7, Adapical view of specimen in 6cole National Superieure des Mines, 

 Paris, from Ranville (Calvados), France, X 2^. 



Nucleolites amplus Agassiz 63 



8, Adapical view of specimen No. M1521/1 in the Naturhistorisches 

 Museum, Basel, Switzerland, from the Middle Jurassic (Bathonian), 

 Discoideen-Schichten, Aargauer Jura, Herznach, Switzerland, X H- 



Nucleolites subquadratiis Agassiz 63 



9, Adapical view of specimen in Museum of Comparative Zoology, 

 Harvard (No. 965) from the Lower Cretaceous (Neocomian) at 

 Mieger et Billecul (Jura), Switzerland, X li. 



