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 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 Psannnechinus 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 , 
Loxechinus and Abattis. 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. 1 2 3 4 
Name. 
Atlantic coast; 
Northern limit. 
Pacific coast 
Northern limit. 
South 
Georgia. 
Antarctic 
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. 
+ 
Notechinus magellanicus (Phil.) .... 
4- » » » 
+ » 12° S. 
Sterechinus Agassizii Mktsn 
+ To 50° S. 
(?) 
Neumayeri (Meissn.) . . . 
+ 
+ 
Loxechinus albus (Mol.) 
( + ) Magellan Strait 
+ To 12° S. 
Abattis cavernosus (Phil.) 5 
+ To 52° S. 
(?) 
+ 
(?) 
» Philippii Lovén 5 
+ To La Plata 
» Agassizii (Pfeffer) 5 
(?) 
+ 
(?) 
Tripylus excavatus Phil. 5 
+ To 50° S. 
+ (? »Chili») 
Schizaster ( Tripylasier ) Philippii (Gray) 
+ To La Plata 
+ To 42 0 S. 
Amphipneustes Koehleri Mrtsn .... 
+ 
1 Report of the Princeton Univ Exped. to Patagonia. Vol. IV. 1902. Invertebrates. Not seen by 
the author. 
2 Notes pour servir à l’étude des Echinodermes. 2 Sér. I. 1902. 
3 Note sur les Échinides recueillies par M. A. Tournouer en Patagonie. Bull. Soc. Géol. de France. 1903. 
4 A complete list of the antarctic-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 — 100133 . Schwedische Südpolar-Expedition içoi — içoj. 
