NO. 3 CASSIDULOID ECHINOIDS — KIER 25 1 



Plate 28 



Page 

 Rhyncholampas pacificus (A. Agassiz) :8o 



1, Enlarged view of ambulacrum II of U.S.N.M. 6988 from Cape 

 St. Lucas, Xantus (living), X 3- 



2, Enlarged view of ambulacrum II of U.S.N.M. 32907 from Pesca- 

 dero Point, Lower California (living), X 3. 



3, Enlarged view of ambulacrum II of U.S.N.M. 3561 from Acapulco, 

 Mexico (living), X 3- 



Rhyncholampas grignonensis (DeFrance) 185 



4, 5, 6, Adapical, rear, right side of Cotteau's (1887, pis. 143, 144, 

 figs. 1-3) figured specimen in the ficole National Superieure des Mines, 

 Paris, from the Middle Eocene, at Grignon, France, X |. 



7, Adoral view of same specimen, X I5. 



8, Floscelle of U.S.N.M. 633997 from the Middle Eocene, at Cahaignes 

 (Eure), France, X 3- 



Plate 29 



Rhyncholampas ellipHcus (Arnold and Clark) 183 



I, 2, 3, Right side, adapical, adoral view of holotype, No. 3284, in the 

 Museum of Comparative Zoology, Harvard, from the Eocene, western 

 side of hills east of Montpelier, St. James Parish, Jamaica, X i- 



Rhyncholampas mexicamis (Kew) 180 



4, Adapical view of holotype (11357) in University of California, 

 from the Pliocene (?) at San Ysidro, Lower California, X !• 



Oolopygus gracilis Lambert 95 



5, 6, Adapical, adoral view of Lambert's (1909, pl- i. figs. 17-18) 

 figured specimen in the Lambert Collection, Sorbonne, Paris, from the 

 Upper Cretaceous (Maestrichtian), Fresville (Manche), France, X li- 



Oolopygus pyriformis (Leske) 94 



7, 8, Right side, adapical view of Lambert's figured specimen in the 

 Lambert Collection, Sorbonne, Paris, from the Upper Cretaceous 

 (Maestrichtian) at Fresville (Manche), France, X li- 



9, Floscelle of same specimen, X 3- 



Plate 30 



Echinolampas oviformis (Gmelin) 107 



I, 2, 3, Adapical, adoral, left side of specimen 7249 in the Museum of 

 Comparative Zoology, Harvard, from Pearl Shoal, Indian Ocean 

 (living), X|. 



4, Floscelle of same specimen, X 2J. 



Echinolampas liicae (Desor) m 



5, Right side of specimen 423 in the Museum of Comparative Zoology, 

 Harvard, from the Miocene of Corsica, X I- More views of this speci- 

 men on plate 31, figure i, and plate 32, figure i. 



