OCULAR AND GENITAL PLATES. 



157 



Table of Typical Ocular Plate Arrangement and Variation in the Centrechinoida {continued). 



a 



3 



Suborder STIRODONTA (continued). 



70 



16 



20 



16 



10 



26 



16 

 10 

 5 

 101 

 58 

 16 

 12 



435 



Saleniidae (continued). 



Pcltastes wrighti Desor. 



Cretaceous, Farrington, England. (Plate 4, fig. 7.) 



Salenia scuiigera Agassiz. 

 Cretaceous, Europe. 



Salenia petalifera Agassiz. 

 Cretaceous, Europe and Algiers. 



Salenia pallersoni A. Agassiz. 



Off Cuba, 300 fathoms; Barbados, etc. (Plate 4, 

 figs. 1, 2.) 



Salerda rincla A. Agassiz and Clark. 

 Near Goto Island, Japan, 95 fathoms. 



Salenocidaris profundi (Duncan). 

 North of Tristan da Cunha, 1,425 fathoms. (Text- 

 fig. 102.) 



Salenocidaris vnrispina A. Agassiz. 

 West Indies, 270-687 fathoms. (Text-fig. 17G; Plate 

 4, fig. 6.) 



Salenocidaris miliaris A. Agassiz. 

 Galapagos Islands; Japan. 



Acrosalenia aspera Agaissiz. 

 Jurassic, Europe. 



Acrosalenia decorala (Hainie). 

 Oolite, England. 



Acrosalenia spinosa Agassiz. 

 Jurassic, Europe. (Text-fig. 103.) 



Acrosalenia hemicidaroides Wright. 

 Jurassic, Europe. (Text-fig. 104.) 



Acrosalenia puslidaia Forbes. 

 Jurassic, England. 



Acrosalenia willoni Wright. 

 Jurassic, near Cirencester and Wilts, England. 

 (Text-fig. 105.) 



wq* 



70* 



m 



16 



95 

 19 



31 

 5 



SO 

 3 



19 

 3 



100 

 10 



60 

 3 



; 

 1 



195 



> 

 > 



3 



o 



5 

 1 



69 

 11 



100 



2 



70 



7 



73 

 19 



81^ 

 13 



> 



65 



40 

 2 



92 

 93 



se 



50 



6J 

 10 



5S 

 7 



162 



19 

 3 



* Italic numerals represent percentages, Arabic numerals the number of specimens observed. 



