30 



THE INORGANIC CONSTITUENTS OF MARINE INVERTEBRATES. 



6. Like No. 5; half grown. 



7. Ophiocoma pumila Lutken. Pigeon Point, Tobago. Like No. 5. 

 Analyses 5-7 by R. M. Kamm; specimens received from Dr. Hubert L. Clark. 



8. Ophiocoma aethiops Liitken. Espiritu Santo Island, Gulf of Caliiornia; about latitude 24° 30' N. 



9. Ophiothrix angulata Ayres. Cuba. 



10. Gorgonocephalus eucnemis MuUer and Troschel. Albatross station 4912, 17J miles off Tsurikake Island, 

 southern tip of Japan; latitude, 31° 39' 40" N.; longitude, 129° 20' W.; depth, 715.5 meters. 



11. Ophiopholis aculeala japonica Lyman. Illiuluk, Unalaska; latitude, 53° 42' N.; longitude, 166° 32' W. 



12. Ophioglypha lymani (Ljungman). Oft coast of Chile; latitude, 48° 41' S.; longitude, 74° 24' W.; depth, 355 

 meters; bottom temperature, 11.1° C. 



13. Ophioimisiiim lymani W. Thomson. Albatross station 3407; off the Galapagos Islands; latitude, 0° 04' S. ; longi- 

 tude 90° 24' 30" W,; depth, 1,619 meters; bottom temperature, 2.9° C. 



14. Ophiocamax fasckulala Lyman, Albatross station 2125, Caribbean Sea; latitude, 11° 43' N.; longitude, 

 60° 09' 30" W.; depth, 381 meters; bottom temperature, 10.4° C. 



15. Ophionereis eurybrachiplax H. L. Clark. Albatross station 3702, off Honshu Island, Japan; depth, 57-75 meters. 



16. Ophiocoma erinaceus Muller and Troschel. Hawaiian Islands. 



17. Ophioglypha lutkeni Lyman. Albatross station 3114, off central (.'alifornia; latitude, 37° 06' N.; longitude, 

 122° 32' W.; depth, 113.5 meters. 



Analyses 8-17 by B. Salkover. 



Analyses ofophiurans. 



SiO, 



(Al,'Fe}A 



MgO 



CaO 



P2O5 



SO3 



Igmtion 



CO2 needed 



Organic matter, etc 



L77 

 .62 



3.36 



36.13 



.22 



(?) 

 55.72 



1.08 



.72 



2.82 



29.80 



..32 



.69 



63.37 



97.82 

 31.65 

 24.07 



98.80 

 25.85 

 37.52 



0.98 

 .53 



3.99 



42.14 



.29 



(?) 

 50.95 



98.88 

 37. 29 

 13.66 



0.21 



.09 



5.80 



41.32 



.07 



.16 



5L58 



99.23 

 38.69 

 12.89 



0.11 



.17 



4.67 



3L57 



Trace. 



1.42 



6L09 



99.03 

 29.17 

 3L92 



0.43 



.55 



4.64 



30.14 



Trace. 



1.60 



62.59 



99.95 

 27.90 

 34.69 



SiOj 



(Al, Fe)A 



MgO 



CaO 



PA 



so, 



Ignition 



CO2 needed 



Organic matter, etc 



0.36 



4.77 



37.20 



.05 



.90 



56.04 



99.32 

 33. 93 

 22.11 



0.10 



.67 



3.06 



47.12 



Trace. 



Trace. 



47.96 



98.91 

 40.39 



7.57 



0.26 

 .67 



4.99 

 42.18 

 (?) 

 (?) 

 52.11 



100. 21 

 38.18 

 13.93 



10 



0.17 



1.99 



2.72 



33.70 



Trace. 



Trace. 



61..51 



100. 09 

 29.47 

 32.04 



11 



0.35 

 .40 



3.44 

 46.21 

 (?) 

 (?) 

 49.74 



100. 14 

 39.73 

 10.01 



12 



0.00 



L64 



2.85 



36.44 



Trace. 



Trace. 



58.76 



99.69 

 31.77 

 16.99 



