31%^ 



Bulletin of the Museum of Comparstive Zoology 



AT HARVARD COLLEGE. 



Vol. LXI. No. 12. 



REPORTS ON THE SCIENTIFIC RESULTS OF THE EXPEDITION TO THE 

 TROPICAL PACIFIC IN CIIAR<.R OF ALEXANDER AGASSIZ, ON THE U. S. 

 FISH COMMISSION STEAMER '• ALRATROSS, " FROM AUGUST, 1899, TO 

 MARCH, 1900, COMMANDER JEFFERSON F. MOSER, U. S. N., COMMANDING. 



XVIII. 



REPORTS ON THE SCIENTIFIC RESULTS OF THE EXPEDITION TO THE EAST- 

 ERN TROPICAL PACIFIC IN CHARGE OF ALEXANDER AGASSIZ, RY THE 

 U. S. FISH COMMISSION STEAMER "ALRATROSS," FROM OCTOBER, 1904, 

 TO MARCH, 1905, LIEUT. COMMANDER L. M. GARRETT. U. S. N., COMMAND- 

 ING. 



XXX. 



OPHIUROIDEA. 



By Hubert Lyman Clark. 



With Five Plates. 



[I'llhlishcd by Permission <•(' H. M. Smith, U. S. Fish Commissioner] 



CAMBRIDGE, MASS., U. S. A.: 



PRINTED FOR THE MUSEUM. 



October, 1917. 



