DESCRIPTION OF SPECIES 



37 



Aplidium radiatum (Sluiter) (Text-fig. 4 A, B; PI. I, fig. 5) 



Psammaplidium radiatum Sluiter, 1906, p. 25, pi. 2, figs. 23, 24; pi. 4, fig. 52. 

 Amaroucium radiatum Hartmeyer, 1 909-11, p. 1471. 

 Aplidium radiatum. Kott, 1954, p. 173. 



Occurrence. St. 27: S. Georgia, 110 m. St. 164: S. Orkneys, 24-36 m. St. 181: Palmer Archi- 

 pelago, 160-335 m - ^t' J 86: Palmer Archipelago, 295 m. St. 190: Palmer Archipelago, 93-126 m. 



Colony (PI. I, fig. 5). Most colonies have a stalk which, in the 'Discovery' material, is always 

 shorter than the head, although sometimes only slightly shorter. In a few colonies there is no stalk, 



1.0 mm 



w 



■53 



2 cm 



1.0 mm 



Text-fig. 4. Aplidium radiatum (Sluiter): A, zooid; B, transverse sections of stomach of two zooids (St. 186). 

 Aplidium seeligeri sp.n. : C, D, two colonies (Sts. 935, 941); E, zooid (St. 941). 



