Elem — Mevision of the Palaeozoic Palae'echinoidea. 75 



Geological formation and locality : Carboniferous, Loyers, i 

 Belgium. 



i. Protocidaris Whidborne 1898.* 

 1. Protocidaris acuaria Whidborne. 



1898. ProtocidaHs acuaria, Whidborne, Palaeont. Soc, vol. 

 52, p. 203, pi. 25, figs. 1-2 a. 



1899. Protocidaris . Sollas, Quart. Journ. Geol. Soc. 



Lond., vol. 55, pt. 4, p. 709. 



Geological formation and locality: Pilton Beds, East of 

 Barnstaple. 



j. Protoechinus Austin 1860. t 

 1. Protoechinus anceps Austin. 



1860. Protoechinus anceps, Austin, Geologist, vol. 3, p. 



446. 

 1874. Protoechinus anceps. Loven, Kongl. Svens. Vetens. 



Akad. Handl., bd. 11, no. 7, p. 42. 

 Geological formation and locality: Carboniferous, Wex- 

 ford, England. 



k. Spatangopsis Torell 1869. J 



1 . Spatangopsis costata Torell . 



1869. Spatangopsis costata. Torell, Acta Univ. Lund., 

 Math, et Natura, 1869, art. 8, p. 11. 

 Geological formation and locality : Cambrian, Lugnas and 

 Timmerdala, Sweden. 



1. Xenocidaris Schultze 1866. § 



1. Xenocidaris clavigera Schultze. 



1866. Xenocidaris clavigera. Schultze, Denkschr. Akad. 

 Wiss. Wien, Math. Naturw. CI., no. 26, p. 126, tab. 

 13, figs. 3-3 h. 



* Monog. Pala-^ont. Soc. London, vol. 52, p. 203. 



t Geologist vol. 3, p. 446. 



X Acta Univ. Lund., Math, et Natura, 1869, art. 8, p. 11. 



2 Denkschrift Akad. Wiss. Wian, Math. Naturwiss. CI., no. 26, p. 126. 



