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44 



45 



46 



47 



48 



49 



Figs. 44-49. — 44, Niicleolites burgundiae (Cotteau) : Phyllode of specimen in Museum of 

 Comparative Zoology, Harvard, from Jurassic (Bathonian) at Selongey (Cote-d'Or), France, 

 X 10. 45, Niicleolites major (Agassiz) : Phyllode of ambulacrum I of specimen in Ecole Na- 

 tional Superieure des Mines, Paris, from Toul, France, X 10. 46, Niicleolites elongatus Agassiz : 

 Phyllode of ambulacrum III of specimen in Museum National d'Histoire Naturelle, Paris, no 

 locality data, X 15. 47> Nucleolites hugi (Agassiz) : Phyllode of ambulacrum V from specimen 

 in Lambert Collection, Sorbonne, Paris, no locality data, X 10. 48, Nucleolites subqiiadratus 

 Agassiz: Phyllode of ambulacrum V of specimen in Museum of Comparative Zoology, Harvard 

 (No. 9^5 ), from the Lower Cretaceous (Neocomian) at Mieger et Billecul (Jura), Switzerland, 

 X 10. 49, Nucleolites scutatus Lamarck: Phyllode of ambulacrum I of specimen USNM 19546, 

 from the Upper Jurassic, (Oxfordian) at Villers, France, X 10. 



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