4^ 



TH. MORTENSEN, 



(Schwed. Stidpolar-Exp. 



/ 



Sterechinus A r euma\ 



Sterechinus Neumayeri (Meissner). 

 PI. VI. Figs. 7—8. PI. VII. Figs. 1—2. 4. 



Th. Mortensen. 1909. Echinoiden der deutschen Sudpolar-Expedition p. 64. 

 R. Koehler. 1908. Asteries, Ophiures et Fchinides de l'Expedition antarctique 

 nationale Ecossaise. Trans. R. Soc. Edinb. XLVI p. 616. PI. XVI, 143 — 144. 



This species has been carefully treated in my work on the Echinoidea of the 

 German South Polar Expedition, the material from the present Expedition being also 

 taken into consideration there, in order to_avoid unnecessary splitting up of the 

 description into two parts. Only the figures from the material of the Swedish Ex- 

 pedition are preserved for this work; for the description reference must be made to 

 the work quoted, in which also the whole literature on this subject is recorded. 



The species was taken at the following stations: 

 Station 5 (64° 20' S. 56° 38' W., Graham Region, S. E. of Seymour Isl. 150 m.). 

 Several specimens. 

 » 8 (64° 3' S. 56 0 37' W., Graham Region. 360 m.?). 



» 20 (54° 12' S. 36° 50' W., South Georgia. 250 1 

 » 22 (54 0 17' S. 36 0 28' W., » » 75 i 



» 25 (54 0 22' S. 36 0 27' W., » » 24—52 : 



» 26 (54 3 22' S. 36° 27' W., » » 30 : 



The bottom on these different stations varies considerably 

 covered with algse to sandy or even clayey bottom. 



1 specimen. 

 I » 



1 » 

 6 



from stony bottom 



Sterechinus Agassizii nom. nov. 

 PI. VI Figs. 9—12. PI. VII Fig. 3. PI. XVI Figs. 1, 7—8, 13. 15, 18. 



Echinus margaritaceus. A. Agassiz. 1872. Revision of Echini p. 124, 493. 



— — 1874. Zoological Results of the Hassler Expedition. Echini (Illustr. 



Cat. Mus. Comp. Zool. No. VIII) p. II. PI. II Fig. 6. 

 — M. Meissner. 1900. Echinoiden d. Hamburger Magalh. Sammelreise p. 11. 



Sterechinus — Th. Mortensen. 1903. >Ingolf> Echinoidea. I. p. 177—178. Note. 



Echinus De Loriol. 1904. Notes pour servir a l'etude des Fchinodermes. 2 Ser. II. p. 16. 



Sterechinus — L. Doderlein. 1907. Echinoiden d. deutschen Tiefsee-Expedition p. 219, 224. 



Taf. XXIX, Fig. 1. Taf. XXXV, Fig. 12. Taf. XLVII, Fig. 9. 

 — — R. Koehler. 1908. Asteries, Ophiures et Fxhinides de l'Expedition antarctique 



nationale ecossaise. Trans. R. Soc. Edinb. XLVI p. 617. 

 ? Echinus — F. Jeffr. Bell. 1902. Echinoderma. Southern CrOss p. 219. 



? — — 1908. Echinoderma p. 6. National Antarctic Expedition. Na- 



tural History. IV. Zoology. 

 Non: Echinus margaritaceus. Lamarck. 1816. Animaux sans vertebres. III. p. 47. 



— — Blainville. 1825. Dictionnaire des Sciences naturelles. Vol. 37 p. 78. 



— — Valenciennes. 1846. Voyage de la Fregate Venus. Zoophytes. PI. VI. 



