Bd VI: 4) 



THE ECHINOIDEA. 



105 



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

 noids known through the works of Ortmann ', De Loriol ^ and Lambert ^ bears 

 at least some evidence for a relation to the recent fauna. The Goniocidaris j or gen- 

 sis De Loriol is doubtless related to Austrocidaris canalicitlata, if not its direct 

 ancestor; the Psaminechinus Ilieringi De Loriol might well be a near relative to 

 NotechiiiHs inagellaniais. 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, 

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

 is no Spatangns or EcJiinocardinin 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. + 



Atlantic coast; 

 Northern limit. 



Pacific coast 

 Northern limit. 



South ^Antarctic 

 Georgia. Coast. 



Ctenocidaris speciosa Mktsn 



Austrocidaris canalicnlata (A. Ac) . . 

 » spinulosa Mrtsn .... 



Arbacia Dufresnii (IÎLV.) 



Notechinus magellatiicus (Phil.) .... 



Sierechinus Agassizii Mrts.N' 



Neumayeri (Meissn.) . . . 



Loxechinus albus (MoL.) 



Abalus cavernosus (PHIL.) ' 



> Philippii LovÉN 5 



> Agassizii (PFEFFER) ' 



Tripylus excavatus Phil. ^ 



Schizasitr (Tripylaster) Philippii (Gray) 

 Amphipneustes Koehleri Mrtsn .... 



+ To 44° S. 



(Falkland Islands) 

 + To La Plata 

 + . > > 

 + To 50° S. 



( + ) Magellan Strait 

 + To 52' S. 

 + To La Plata 

 (?) 



+ To 50° S. 

 + To La Plata 



+ To 42' S. 

 + > 12° S. 

 (?) 



+ To 12° S. 



(?) 



+ (? »Chili») 

 + To 42° S. 



+ 

 (?) 



(?) 

 (?) 



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

 the author. 



' Notes pour servir à l'étude des Lchinodermes. 2 Sér. I. igoî. 



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



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

 schen Südpolar-Expedition». 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 — 100i:j3. Schwedische Südpolar- Expedition igoi — içoj. 



