﻿OPIIIOMYXA KLACCIDA. 



179 



inclining to yellowish green ; below, interljrachial spaces like upper 

 surface ; the other parts pale sap-green. 



Variations. — The number of arm-spines varies from four to six, or 

 even seven ; and this does not seem entirely to depend on size. The 

 color, in alcohol, is usually some shade of green, either plain sap or 

 olive green, or bright green mottled and banded with yellowish. Occa- 

 sionally the color of the upper parts is deep brownish-green. Liitken's 

 figure, which is not correctly drawn, gives the color as red (burnt-lake). 

 A colored drawing of the living animal, belonging to Professor Agassiz, 

 is yellowish orange (yellow ochre and orange chrome), with a few 

 lighter bands near the ends of the arms. Probably the color varies 

 through several tints of red and of orange. 



This species has been taken, in from three to five fathoms of water, 

 at Santa Cruz and St. Thomas (Orsted, Kiise). At the latter place Mr. 

 Riise has found it in the holes made in corals by boring mollusks. It is 

 not uncommon on the coast of Florida, near low-water-mark. 



Say's description was evidently from a dried specimen, as he mentions 

 the row of overlapping scales along the upper margin of the disk. 



LIST OF SPECIMENS. 



40t 

 155 

 156 

 157 

 158 

 159 



IGO 

 161 



163 

 164 

 353 



1044 

 988 



1042 

 983 



1076 



1103 

 1155 



Museum of Comparative Zoology. 



Hayti. 



Key West, Fla. 



Florida. 



Tortusas, Fla. 



Key West, Fla. 



Cape Florida. 



St. Thomas, "W. I. 



Florida. 



West Indies. 



Florida. 



Jamaica. 



Smithsonian Institution. 



4 



1 

 1 



2 

 1 



4 



Cape Florida. 

 Cape Florida. 

 Florida. 

 Tortusras, Fla. 

 St. Thomas, W. I. 

 St. Thomas, W. I. 

 St. Thomas, W. I. 

 St. Thomas, W, I. 



Dr. Weinland. 



J. E. Mills. 



Prof. Afrassiz. 



J. E. Mills. 



J. E. Mills. 



G. Wurdeman and 



J. E. Mills. 

 A. H. Riise. 

 G. Wurdeman. 

 University Museum, 



Copenhagen. 

 G. Wurdeman. 



Amherst CoUesre. 



Dr. Whitehurst. 

 A. II. Riise. 

 A. II. Riise. 

 A. II. Riise. 

 A. H. Riise. 



