44 



JAMES A. GRIEG 



[REP. OF THE "MICHAEL SARS" NORTH 



P. S. 



During the printing of the present paper a sample 

 of bottom-material from st. 70 was handed to me for 

 examination. It contained three species of echinoderms 

 which have not been mentioned in the foregoing descrip- 

 tion of the echinoderm-material from the expedition. 

 The number of echinoderm-genera and species from the 

 "Michael Sars" Expedition 1910 is thereby raised to ^8 

 and 95 respectively. 



Astrogortium parelii Diiben & Koren. 

 Astropecten parelii Diiben & Koren, Kgl. Vetensk. Handl., 1844 

 (1846) p. 247, tab. 7, figs. 14—16. 



One young specimen, diameter 18 mm., radius of 

 arm 10 mm., radius of disc 4 mm. 



Ca/ycaster monaecus Ed Perrier. 

 Calycaster monaecus Ed. Perrier, Mem. Soc. Zool. de France, vol. 4 



1891, p. 262. 



One young specimen, diameter 8 mm., radius of arm 

 4 mm., radius of disc 2 mm. It agrees with the smallest 

 of the four specimens described by Perrier 1 ). 



Calycaster monaecus is taken only once previously, 

 by the Prince of Monaco, at the Azores, in 1557 mm. 



Brissopsis atlantica Mortensen. 



Brissopsis atlantica, Mortensen, Echinoidea, part 2, Danish In- 



golf Exp., vol. 4, part. 2, 1907, pag. 160, tab. 3, figs. 6, 10, 17, tab. 18, 



figs. 5, 9, 10, 13, 19, 20, 24, tab. 19, figs. 1, 4, 5, 11, 13, 14, 16, 22 



23, 25, 28, 30—33. 



One specimen. 



') Ed. Perrier, Stellerides, Res. Camp. Sci. Monaco, Fasc. 11, 

 1896, p. 28. tab, 3, fig. 3 a. 



Bergen, October 20. 1920. 



