314 THE VOYAGE OF H.M.S. CHALLENGER. 



Fig. 18. Pourtalesia laguncula, large Clypeastroid-like pedicellaria, profile. 

 „ 19. ,, „ full view facing one of the valves of same. 



„ 20. Pourtalesia carinata, large-headed pedicellaria. 



,, 21, 22, 23. Pourtalesia carinata, Clypeastroid-like pedicellaria ; different views. 

 „ 24. Calymne relicta, large-based, Clypeastroid-like pedicellaria (PI. XLIV. figs. 



47, 48). 

 „ 25. Aceste hellidifera, large-headed pedicellaria (PI. XLIV. fig. 46). 

 „ 26. Schizaster jaioonicus, large-headed pedicellaria. 



PLATE XLIV. 



Pedicellaei.e (figs. 1-48). 



Fig. 1. Goniocidaris canaliculata, interior view of a single valve of one of the short- 

 headed, long-stemmed ambulacral pedicellarise. 



„ 2. Goniocidaris canalicidata, -pvo&le of a valve of a short-stemmed globular abac- 

 tinal pedicellaria. 



„ 3. Goniocidaris canaliculata, upper part of rod of a long-stemmed pedicellaria. 



„ 4. Goniocidaris Jlorigera, interior view of a prong of the globular-headed, short- 

 stemmed pedicellarise. 



,, 5. Goniocidaris Jlorigera, general view of the head of short-stemmed globular- 

 headed interambulacral pedicellarise. 



„ 6. Porocidaris elegans, interior view of single valve of one of the large-headed, 

 short-stemmed interambulacral pedicellarise. 



,, 7,8. Porocidaris elegans, interior view of valves of smaller pedicellarise. 



„ 9. Profile of fig. 8. 



,, 10. Porocidaris elegans, interior view of valve of short-stemmed, short-headed, 

 abactinal pedicellaria. 



„ 11. Porocidaris elegans, interior view of large-headed, short-stemmed interambu- 

 lacral pediceUariae. 



,, 12. Base of rod supporting valve of fig. 6. 



„ 13. Base of rod supporting valve of fig. 11. 



„ 14. Extremity of rod supporting valve of fig. 11. 



„ 15. Aspidodiadenia tonsuni, valve of long-headed, long-stemmed pedicellaria, seen 

 from the interior. 



,, 16, Aspidodiadema ww'croitt&ercMZaitMn, magnified portion of secondary spines. 



,, 17, „ „ head of rod supporting long-headed, long- 



stemmed pedicellaria. 



