﻿AMPHIURA CIIIAJII. 



119 



Variations. — A small specimen had a disk of 4"""-, and arms of 

 14.5"""' ; the primary plates Avere very large, rounded, and distinct ; 

 the upper arm-plates were proportionately longer and more angular 

 than in the adult ; there were four arm-spines, which Avere more taper- 

 ing than in larger sj^ecimens. Sometimes the inner angle of the under 

 arm-plates is nearly obliterated. The side mouth-shields often do not 

 quite meet in the interbrachial spaces. Color of the living animal, 

 whitish. 



Taken off the coast of Greenland ; muddy bottom ; fifteen to fifty 

 fathoms (Barrett). 



The displaced middle mouth-papilla is a good distinguishing mark in 

 this species. 



LIST OF SPECIMENS. 



I '' I 



Museum of Comparative Zoology. 



Smllhsonian Institution. 



University Jluseum, I 

 Copenhagen. 



Univei-sity Museum, I 



Copenhagen. AlcohoHc. 



AmpMura Chiajii Forbes. 



Asterias Jiliformis Delle Chiaje (non O. F. Muller). Memorie, 11. p. 359. 

 Amphiura Chiajii Forbes. Linn. Trans., XIX. p. 151. 1843. 

 Amphiura Chiajii Sars. Middelhav. Lit. Fauna, H. p. 86. 1857. 

 Amphiura Chiajii Lutken. Addit. ad Hist. Oph., p. 57. 

 Ophiolepis Sundevalli Mull. & Trosch. Syst. Asteriden, p. 93. 



There are, at Berlin, specimens labelled Ophiolepis Sundevalli, ap- 

 parently in the writing of Joh. Muller (Anat. Mus., 16498). They 

 were sent from Norway by Professor Sars, and are plainly the same 

 as A. Chiajii. The two synonymes are contemporaneous ; but A. 

 Chiajii is here retained as the name in use among the best authors. 



