218 MESSRS. E. HERON-ALLEN AND A. EARLAND ON THE 



Family ASTRORHIZIDJ3. 

 Subfamily Astrorhizin^:. 



Iridia, Heron-Allen & Earland. 



55. Iridia diaphana, Heron-Allen & Earland. 



Tridia diaphana, Heron- Allen & Earlaud, 1914, EKA. p. 371 (cj. v. for earlier references). 

 5 Stations. 



The primordial dome-shaped chambers occur attached at Stn. 19, detached at Stn. 16. 

 Full-grown specimens, both attached and free, at Stn. 15 exhibiting the chitinous 

 pellicle, and attached at Stn. 22. 



Pelosina, Brady. 



56. Pelosina variabilis, Brady. 



Pelosina variabilis, Brady, 1879, etc., RRC. 1879, p. 30, pi. iii. figs. 1-3. 

 Brady, 1884, FC. p. 235, pi. xxvi. figs. 7-9. 



1 Station. 



A single specimen at Stn. 10. 



Storthosph^ra, Schulze. 



57. Storthosphaera albida, Schulze. 



Storthosphcera albida, Schulze, 1874, R. p. 113, pi. ii. fig. 9 a-d. 



„ „ Brady, 1884, FC. p. 241, pi. xxv. figs. 15-17. 



1 Station. 



A good many specimens at Stn. 18, rather small and thinner-walled and less corru- 

 gated externally than in deep-water individuals. 



Subfamily Piltjlinin^:. 

 Bathysiphon, Sars. 



58. Bathysiphon argenteus, Heron-Allen & Earland. 



Bathysiphon argenteus, Heron-Allen & Earland, 1913, CI. p. 38, pi. iii. figs. 1-3. 



5 Stations. 



Fragments of this very easily recognized organism occur in the dredgiugs, the largest 

 being at Stns. 14 and 21. The peculiar metallic iridescence of the external surface 

 renders the identification of this species possible even when only a minute fragment of 

 the fragile test is forthcoming. 



