﻿OPlIIOLEnS. 

 LIST OF SPECIMENS. 



55 



I « I ■ I 



Museum of Comparative Zoology. 



45 I 1 I Grcculaml. I I University Jliiscura, I 



I ] Coiwiihagun. I Alcoliolif. 



Smithsonian Institution. 



Greenland. I I University IMuseum, I 



Copenhagen. Alcoholic. 



OPinOLEPIS MiJLL. & Trosch. 



Type of tue Genus, 0. annidosa. 



Disk covered with radial shields and stout scales ; each larger one, 

 above, being surrounded by a belt of smaller ones. Over the base of 

 each arm, a small notch in the disk. Genital scales thick and con- 

 spicuous. Teeth. No tooth-papilla3. Mouth-papillo3. Side mouth- 

 shields wide, and nearly, or quite, meeting within. Arm-spines ar- 

 ranged along the outer edge of the side arm-plates. Supplementary 

 pieces to the upper arm-plates. Two genital shts, beginning at the 

 sides of the mouth-shields. 



GROUPING OF SPECIES HEREIN DESCRIBED. 



Two very short arm-spines, 



Five to seven short, even arm-spines, 



Four minute ; 



Mouth-shields as broad as long, 



0. paucispina. 

 ( 0. anniilosa. 

 I O. elegans. 

 ( 0. cincla. 

 ( 0. Garretti. 



Ophiolepis paucispina MtjLL. & Trosch. 



Ophiura paucispina Say. Journ. Phil. Acad., V. p. 149. 1825. 



Ophiolepis paucispina. Syst. Asterid., p. 90. 



Ophiolepis paucispina Lutken. Addit. ad Hist. Oph., p. 102. 



Special Marks. — Only two very short arm-spines ; arms about twice 

 as long as the diameter of the disk ; under arm-plates considerably 

 broader than long. 



