Plate 107. 



1-10. Spatagodesma Diomedae A. Ag. ; Station 2769, "Albatross" 

 Exp., N. Y. to San Francisco, off Cape Dos Bahias. 



1. Denuded specimen 5.3 mm. in length, seen from the actinal side. 



2. The same, seen from the abactinal side. 



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



4. Seen facing the anterior loop of the fasciole and the odd ambulacrum. 



5. Seen facing the anal system and the odd interambulacrum. 



6. Specimen 5.5 mm. in length, seen from the abactinal side, with its spines and suckers. 



7. The actinostome and plates surrounding the same. 



8. 9. Primary spines of the sternum. 

 10. Spines of the fasciole. 



