Plate III. 



2, 3, 7, II, 12, i8, 20 — 23 Brissopsi's lyrifera. 5, 8, 9, 13, 16 By. alta. 6. 10, 17 Br. al/an/ica. 1 Brissopsis sp. 



4, 14, 15, 19 Br. elo7igaia. 



Fig. I 



— 2 



— 3' 



— 4 



— 5' 



— 6. 



— ?■ 



— 8. 



— 9- 



— 10. 



— II 



— 12. 



— 13 



— 14 



— 15 



— 16. 



— i7. 



— I 



— 19 



— 20. 



— 21 



— 22 



— 23, 



Brissopsis sp. (Talisman«), abactinal side. '/i- 



— lyrifera, abnormal specimeii, actinal side. '/i- 

 ^ — (iThor"), abactinal side. '/i- 



— cloiigafa, j'oung specimen, side view. '/i- 



— alta («Blake , St 49), abactinal side. '/i- 



— atlantica (sAlbatross >, St. 2378), abactinal side. '/i- 



— lyrifera, abnormal specimen, actinal side. 7i- 



— alta (cBlake", St. 49), actinal side. 7i- 



— — («Albatross», St. 2401), actinal side. '/i- 



— atlantica («Albatross», St 2378), actinal side. '/i- 



— lyrifera, abnormal specimen, actinal side. '/i- 



— — (Mediterranean), abactinal side. 7i- 



— alta (« Albatross >, St 2401), abactinal side. 7i- 



— elongata, side view. 7i- 



— — abactinal side. 7i- 



— alta (i Albatross?, St 2401), side view. '/j. 



— atlantica («Albatross->, St. 2748); abactinal side. 7i- 



— lyrifera (Bergen), side view. 7i- 



— elongata, actinal side. 7i- 



— lyrifera (Mediterranean), actinal side. 7i- 



— — (Bergen), abactinal side. 7i- 



— — — actinal side. Vi- 



— — (Mediterranean), abactinal side. 7i- 



