SYSTEMATIC DESCRIPTIONS SPATANGINA. 81 



ambulacral petals of equal length; also by the fact that the interam- 

 bulacra are strongly pinched up and prominent. 



Eocene, St. Bartholomew limestone, St. Bartholomew, Guppy collec- 

 tion ex Cleve, 1 specimen, holotype, U. S. Nat. Mus. No. 115418. 



Genus SCHIZASTER Agassiz, 1836. 



Type species. Schizaster studeri Agassiz, 1835, Prodrome Mono- 

 graphic Radiaires, Mem. Soc. Sci., Neuchatel, vol. 1, p. 185 [separate 

 p. 18]. 



Schizaster scillae Agassiz. 



Schizaster scillae Agassiz, 1847, Catalogue Raisonne, Ann. Sci. Nat., ser. 3, vol. 8, p. 21 

 (wow Guppy, 1866, Quart. Jour. Geol. Soc. London, vol. 22, p. 301). Cotteau, 

 1881, Ann. Soc. Geol. Belgique, vol. 9, p. 35; 1897, Bol. Com. Mapa Geol. Espana, 

 vol. 22, p. 82; plate 26, figs. 4, 5; plate 27, figs. 4 to 6. 



I have not seen material of this species. Guppy (1882, Scientific 

 Assoc. Trinidad, Proc., part 12, p. 197) says that the specimens from 

 Anguilla, which in 1866 he referred to Schizaster scillce, should be referred 

 to the species which Cotteau describes as Schizaster loveni, here called 

 Paraster loveni. 



Cotteau describes specimens of scilla from the "Miocene" of Cien- 

 fuegos, Cuba, where he says it is rare ; Dewalque collection in Liege. 



Family SPATANGID^E Gray, 1825. 

 Genus BRISSOPSIS Agassiz, 1840. 



Type species. Brissus lyrifer Forbes, 1841, British Starfishes, p. 187. 



Key to the West Indian Fossil Species of Brissopsis. 



Petals not very divergent, II and IV ascending and then curving outward. 



Periproct not visible from above B. jimenoi 



Periproct visible from above B. atlantica 



Petals markedly divergent; II and IV not curved; periproct visible from above. B. antillarum 



Brissopsis jimenoi Cotteau. 



Brissopsis jimenoi Cotteau, 1875, Kongl. Sven. Vet. Akad. Handl., vol. 13, No. 6, p. 6; 

 1881, Ann. Soc. Geol. Belgique, vol. 9, p. 33, plate 3, figs. 5 to 9; 1897, Bol. Com. 

 Mapa Geol. Espafia, vol. 22, p. 79, plate 24, figs. 5 to 9. 



This species was described by Cotteau from the "Miocene" of Cien- 

 fuegos, San Martin, Province of Santa Clara, Cuba, where he says it is 

 rare. Collections of Dewalque in Liege, Cotteau in Paris, and Comisi6n 

 del Mapa Geologico de Espana, Madrid. 



Brissopsis atlantica Mortensen. 



Brissopsis atlantica Mortensen, 1907, Danish Ingolf Expedition, vol. 4, part 2, p. 160, plate 3, 

 figs. 6, 10, 17. Lambert, 1915, Mem. Soc. d'Agric. de 1'Aube (Troyes), vol. 79, p. 22. 



This species, described by Mortensen from the living fauna, is reported 

 by Lambert as occurring fossil in the West Indies. He says that the 

 matrix is identical with that of Clypeaster rosaceus, which he also reports 



