Plate 63. 

 1-11. Homolampas hastata A. Ag. 



1. Abactinal view of specimen 32 mm. in length; Station 3363. 



2. The same, seen in profile, facing the left posterior interambulacrum. 



3. Abactinal system of the same specimen. 



4. The same as fig. 3, seen from the interior. 



5. The anal system of the same specimen with the surrounding plates of the od<J 



interambulacrum. t 



6. Actinal system of a specimen 35 mm. in diameter (fragment) ; Station 3376. 



7. Primary and miliary interambulacral tubercles near the ambitus of specimen 3.j 



mm. in length. 



8. 9. Primary interambulacral spines of same specimen. 



10, Primary interambulacral spine of same specimen, seen in profile. 



11. Base and milled ring of fig. 10. 



