ECHINODERMA. 15 



AsTROTOMA AGASSIZI. 

 Astrotoma agassizii, Lyman, 111. Catal. Miis. C. Z. No. viii. II. (1875), p. 24. 



Mr. Lyman calls attention to the coarse granulation on his single specimen, 

 which came from the Straits of Magellan ; the series now collected shows that the 

 granulation may be more or less obscured by thick skin. It is remarkable that the 

 species was not collected by the ' Gauss.' 



McMurdo Bay, 96-120 fms. 



Specimens from off Coulman Island, and from 71° 12' S., 167° 27' E., 2 fms. seem 

 to lie sufficiently different to be regarded as varieties. 



K 2 



