﻿140 



OPHIONEREIS. 



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, from 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" (Stimpson). 



LIST OF SPECIMENS. 



Whence obtained. 



200 

 201 

 202 



1009 

 1201 



12+ 

 12+ 



Museum of Comparative Zoology. 



Charleston, S. C. 

 Charleston, S. C. 

 Charleston, S. C. 

 Charleston, S. C. 



1852. 

 1852. 



Smithsonian lastituti 

 South Carolina. I .... 



South Carolina. .... 



Prof. Agassi 

 Prof. Agassi 

 Prof Agassi 

 Prof Agassi 



]\Ir. Cassidy. 

 Wm. Stimpson. 



OPHIONEREIS LiJTKEN. 



Type of the Genus, 0. reticulata Lutken. 



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

 rounded. Teeth. Mouth-papillte. 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. 



O. reticulata. 

 0. annulata. 

 0. Xantusii. 

 0. porrecta. 

 0. duhia. 



