HOLOTHURIOIDEA, ASTEROIDEA, AND ECHINOIDEA 387 



Ophidiaster Agassizii Ed. Perr, 



Literature. 



i88t. Ed. Perrier: Description sonimaire des especes nouvelles d'Astdries, 



Bull, of Mus. comp. Zool. Vol. IX. No. i. Pag. ii. 

 1884. Ed. Perrier: Mdmoire sur les fitoiles de Mer recueillies dans la Mer 



des Antilles et le Golfe du Mexique. Pag. 223. 

 1896. M. Meissner: Die von Herrn Dr. L. Plate aus Chile und Feuerland 



heimgebrachten See-Sterne. Arch. f. Naturgeschichte. Bd. i. H. 2. Pag. qq. 

 1900. P. de Loriol: Notes pour servir a I'etude des Echinodermes. VIII. 



Revue Suisse de Zoologie. T. 8, Pag. 79. 



This species is represented by 5 specimens. 



2 specimens collected by C. Skottsberg (Swedish Magellan Expedition 

 1907-09): 



Masatierra, St. 37, (^*/8 1908), 20 fathoms, sand and stones R. 36 r. 7 

 (ale). 

 » Bahia del Padre St. 39. (^Vs 1908), literal R. 34 r. 8 (ale.) 



3 specimens, collected at the same island 1916 — 17 by K. Backstrom: 



R. 30 r. 5 (dried). 

 R. 28 r. 5 (dried). 

 R. 56 r. 9 (dried). 



The specimens in question all agree with Perrier's (i) description, even 

 if the number of »pores tentaculaires», given by him, does not quite correspond 

 with that of the specimens from Juan Fernandez. The number seems to be 

 smaller — the pedicellaries, on the contrary, appear to be more numerous 

 than recorded by Perrier. Whether this is due to the specimens examined 

 by me being, smaller than those examined by Perrier (R = 70 mm., r 10 

 mm.) cannot be settled, because the material is too small in number to enable 

 us to decide how far these differences in structure correspond to the size of 

 the specimens. 



Asterias fernandensis Meiss. 



Literature. 



1896. M. Meissner: Die von Herrn Dr. L. Plate aus Chile und Feuerland 

 heimgebrachten See-Sterne. Pag. 104. Taf. VI. Fig. i. 



1904. P. DE Loriol: Notes pour servir a I'etude des fichinodermes. Seconde 

 serie. Fascicule II, pag. 41. Planche III (6). Fig. 4—8. 



Of this species there are only 2 specimens in the collection (K. BACK- 

 STROM). 



Masatierra, 20—35 "^■» calcareous algae, ^Vs 191 7. 

 . 2 R 14 mm. 4 R 0,8 mm. r 5 mm. 



» 20—35 "!•> sand with calcareous algae, **/4 1917. 



2 R 6 mm. R 5 mm. R 2 mm. R 1,4 mm. r 1,5. 



