Bd VI: 4) THE ECHINOIDEA. 105 



It is worth noticing that the fauna of fossil (probably miocene) Patagonian Echi- 

 noids known through the works of ORTMANN z , De LoRIOL 2 and Lambert 3 bears 

 at least some evidence for a relation to the recent fauna. The Goniocidaris jorgen- 

 sis De LoRIOL is doubtless related to Austrocidaris canaliculata, if not its direct 

 ancestor; the Psammechinus Iheringi De Loriol might well be a near relative to 

 Notechinus magellanicus. The other species do not with certainty point towards 

 the recent forms, and — as pointed out by Lambert (Op. cit. p. 483) — there are 

 no forms among them having any relation to such of the recent forms as Arbacia, 

 Loxechintis and Abatus. On the other hand, I would especially point out that there 

 is no Spatangus or Echinocardium among the fossil forms, which might have given 

 an indication of the supposed former connection with South Africa. Upon the 

 whole the fossil Patagonian Echinoid fauna does not show any distinct relation to 

 other faunas than the recent Patagonian. 



List of the littoral Echinoids of the Patagonian-Chilian Region. 4 



N a m e. 





Atlantic coast; 



Pacific coast 



South 



Antarctic 





Northern limit. 



Northern limit. 



Georgia. 



Coast. 



Ctenocidaris speciosa Mktsn 











+ 



+ 



Austrocidaris canaliculata (A. AG.) . . 



+ 



To 44 0 S. 









(?) 



» spinulosa MRTSN .... 





(Falkland Islands) 











Arbacia Dufresnii (Blv.) 



+ 



To La Plata 



+ 



To 42° S. 





+ 





+ 





+ 



> 12° S. 







Stertchinus Agassizii Mrtsn 



+ 



To 50° S. 



(?) 









» Neumayeri (MEISSN.) . . . 











+ 



+ 



Loxcchinus albus (Mol.) 



( + 



Magellan Strait 



+ 



To 12° S. 







Abaltts cavernosus (Phil.) 5 



+ 



To 52 0 S. 



(?) 





+ 



(?) 





+ 



To La Plata 











» Agassizii (PFEFFER) 5 



(?) 









+ 



(?) 



Tripylus excavatus Phil. 5 





To 50 0 S. 



+ 



(? »Chili>) 







Schizaster (Tripylaster) Philippii (Gray) 



+ 



To La Plata 



+ 



To 42 0 S. 







Amphipnetistes Koehltri Mrtsn .... 











+ 





1 Report of the Princeton Univ. Exped. to Patagonia. Vol. IV. 1902. Invertebrates. Not seen by 

 the author. 



2 Notes pour servir a l'etude des Echinodermes. 2 Ser. I. 1902. 



3 Note sur les Echinides recueillies par M. A. Tournouer en Patagonie. Bull. Soc. Geol. de France. 1903. 



4 A complete list of the antarctic-subantarctic Echinoid fauna is given in »Die Echinoiden d. deut- 

 schen Siidpolar-Expeditions . 1909, p. 105. 



5 The limits of these species must be regarded as uncertain on account of the confusion reigning here 

 in the previous literature. 



14 — 100133. Sckwedische S'udpolar- Expedition igoi — igoj. 



