NO. 3 CASSIDULOID ECHINOIDS — KIER lOI 



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81 ^2 83 



Figs. 81-83.— 8i, Parapygns nanclasi (Coquand) : Phyllode of ambulacrum I from 

 specimen in Ecole National Superieure des Mines, Paris, from the Upper Cretaceous 

 (Senonian) at Epagnac (Charente), France, X 10. 82, Parapygiis cassidiiloides Gauthier : 

 Phyllode of ambulacrum III of lectotype in Museum National d'Histoire Naturelle, Paris, 

 from the Upper Cretaceous (Senonian) at Djebel Aidoudi, Tunisia, X 10. 83, Parapygiis 

 toucasanns (d'Orbigny) : Phyllode of ambulacrum III of specimen in ficole National 

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

 France, X I5- 



DESCRIPTION OF TYPE SPECIES 



PARAPYGUS COTTEAUANUS (d'Orbigny) 



Plate 14, figures 4-6 ; text figure 85 



Botriopygns cotteauanus d'Orbigny, 1856. Pal. franc, Cretace, vol. 6, pp. 341-342, 

 pi. 932. 



Material . — Two specimens studied from the Lambert Co!lection, 

 Sorbonne, Paris. 



SJiapc. — Aledium to large (40 to 50 mm. long), oval, inflated 

 adapically, flattened adorally. 



Apical systejn. — Anteriorly eccentric, tetral)a.sa!, posterior genital 

 plates separated by genital 2. 



Ambulacra. — Well-developed petals with wide interporiferous 

 zones, one-third wider than poriferous zones, petals with slight 

 tendency to close distally; anterior petals extend to near margin, 

 posterior petals between one-half and two-thirds distance to margin; 

 pores conjugate with outer pore of pore pair slitlike, inner pore round. 



