2G6 



K. MITSUKl'EI : STUDIES ON 



whei-e the clusters of spoon- sliaped deposits are found and from 

 ■wliich the anchors protrude. They are, however, mostly broken 

 off. The tentacles are 15, all withdrawn, and I can not determine 

 liow many, if any, lateral appendages are attached to each of 

 them. The calcareous ring as figured in textflg. 54 a. 



The radialia have posterior prolongations ending posteriorly in 

 two points. Anteriorly they end in two points. The interradialia 

 have posterior prolongations, but present a round scalloped 

 posterior margin, and have two points anteriorly. One Polian 

 vesicle, which is ovoid and has a length of 5 mm., its stalk also 

 5 mm. long. Along 

 the fi-ee edge of A^j^l^^l-^ 

 the dorsal mesen- 

 tery turned toward 

 the gullet, there 

 runs a stone-canal, 

 which presents 

 near its superior 

 termination some 

 convolutions and a 

 madreporic knob. 

 The respiratory 

 tree is well de- 

 veloped. Its left 

 branch is produced anteriorly and becomes attached to the gullet 

 as was stated by Theel (1886, p. 39) for A. danieJssenl. 



The calcareous deposits are very characteristic and establish 

 the species. Here and there, we see, as in all the sjiecies of 

 Anhjroderma, clusters of spoon- like bodies from which anchors 

 stand out (d). These have some teeth on the outside of their 



Textfig. S4. 



A-nti-yro hrma iliomedin : — a Calciireous ring; h, c — Tiibles'; (' — 

 Anclmr. (h—1 x lall). I— Internuliilux ; E.— Enaiiliii. 



