140 



OPIIIONEREIS. 



The existence of these groups is indicated at low water, by spaces of 

 about a foot in diameter, covered with small holes, looking very much 

 as if a charge of shot had been fired into them. If these spots are 

 watched as the tide rises, fi"om each hole an arm of one of the star- 

 fishes will be seen to protrude, and wave about in the water. Gener- 

 ally each individual sends up one of its rays in this manner" (Stimj^son). 



LIST OF SPECIMENS. 



Catalo<rue 

 Number. 



Oripinal 

 Number. 



Number 

 of Spec. 



Locality. 



When 

 Collected. 



Whence obtained. 



Nature of 

 Specimen. 



199 

 200 

 201 

 202 



1009 

 1201 



12-- 

 12-- 

 12-- 



12-- 



12+ 

 12+ 



Museum of Comparative Zoology. 



Charleston, S. C. 

 Charleston, S. C. 

 Charleston, S. C. 

 Charleston, S. C. 



1852. 

 1852. 

 1852. 



Smithsonian Institution. 



South Carolina. 

 South Carolina. 



Prof. Agassiz. 

 Prof. Agassiz. 

 Prof. Agassiz. 

 Prof. A<rassiz. 



Mr. Cassidy. 

 Wm. Stimpson. 



Alcoholic. 



Alcoholic. 



OPHIONEREIS LiJTKEN. 



Type of tue Genus, 0. reticulata Liitken. 



Disk covered with flat scales, varying little in size, overlapping, 

 rounded. Teeth. Mouth-papillie. No tooth-papillae. Smooth spines 

 (commonly three) along the sides of the side arm-plates. One large 

 tentacle-scale. Each upper arm-plate furnished with a supplementary 

 piece on either side. Two genital slits beginning outside the mouth- 

 shields. 



SPECIES HEREIN DESCRIBED. 



0. reticulata. 

 0. annulata. 

 0. Xantusii. 

 O. porrecta. 

 0. dubia. 



