Bd VI: 4) 



THE ECHINOIDEA. 



log 



Fig. 7. Abatus cavernosus 



14. 



O^. Abactinal side. '/i. 

 elongate form. c/'. Abactinal side. 'i. 

 O^. .\bactinal side, '/i- 



elongate form. Ç. Abactinal side. '/i. 

 » » Actinal side. '/'• 



Abactinal side. The white spots are specimens of a com- 

 mensalistic bivalve Mollusc {Lepton sp.). '/i- 

 Agassizii. Type specimen. Aliactinal side, '/i- 



Plate XI. 



Tripyliis cxcavatus; side view. Same specimen as Figs. 14 and 16. '/i. 

 Amphipneiisfcs Koehleri; abactinal side. Same specimen as Fig. 4. 3- 5/1. 

 ■•> ç^. Abactinal side. Vi- 



» » Actinal side. Same specimen as Fig. 2. ^'^/i, 



s » 9- Side view. Same specimen as Figs. 15 and 18 



Abatus Philippii. Type specimen, ç^. Abactinal side. Vi- 

 Ainphipiieustes Koehleri. cf. Side view. Same specimen as Fig. 3. '/i. 



-:> ■■> 5 Actinal side. Same specimen as Fig. 3. '/'i. 



Abactinal side. Vi- 

 Ç. Abactinal side. '/i. 

 cT'- 5 9 



Abatus PhUlppii. 



» » c^. 



Tripylus excavatus. <^. 

 Amphipneustes Koehleri. 



(These specimens were identified by Lu- 

 ven as A. cavertiosus.) '/i. 

 » » Type specimen, '/i. 



3 » Same specimen as Figs, i and 16. ','1. 



Ç. Abactinal side. Same specimen as Figs. 5 and 18. '/i- 

 Tripylus excavatus. Actinal side. Same specimens as Figs, i and 14. '/i- 

 Amphipneustes LorioU. Abactinal side. Same specimen as Fig. 19. '/i. 



» Koehleri. Actinal side Same specimen as Figs. 5 and 15. Vi- 



» LorioU. » » s » » Fig. 17. '/i. 



Plate XII. 



Fig. I. 



Amphipneustes Koehleri, young specimen. Abactinal side. Note the large globi- 



ferons pedicellariîE. 3-5/i. 

 Tripylus excavatus; hind view. Same specimens as Figs. 4, 6 and 9. Vi. 

 Amphipneustes Koehleri. Actinal side. Same specimen as Figs. 5 and 7. '/i. 

 Tripylus excavatus. Abactinal side. Same specimen as Figs. 2, 6 and 9. '/i. 

 Amphipneustes Koehleri. Abactinal side. Same specimen as Figs. 3 and 7. '/i. 

 Tripylus excavatus. Actinal side. Same specimen as Figs. 2, 4 and g. '/i. 

 Amphipneustes Koehleri. Side view. Same specimen as Figs. 3 and 5. '/■• 

 Schizaster {Tripylaster) Pliilippii. Side \aew. Same specimen as Figs. 10 and 1 1. '/i- 

 Tripylus excavatus. Side view. Same specimen as Figs. 2, 4 and 6. VS 



