OPHIOLEPIS. 



55 



LIST OF SPECIMENS, 



Catalofjue Orijrinal Number 

 Number. Numbir. ofSpec. 



Locality. 



Wlien 

 CullLclid. 



Wlience obtained. 



Nature .if 

 Speciiiieii. 



3Tnsctnn of Comparatice Zuohrjij. 



32 I 45 I I I Greculaiul. I I Univt-rsity i\Iuseuin, I 



III I I Cupt'iiliagL-n. I Alcoholic 



1036 



Smithsonian Institution. 



Greenland. 



Univoi-sity Museum, 

 Copenhagen. 



Alcoholic. 



OPPIIOLEPIS Mlll. & Troscii. 



Type of the Genus, 0. annulosa. 



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-papilla). Mouth-papilhw 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 OP SPECIES UEREIN DESCRIBED 



Two very short arm-spines, 



Five to seven short, even arm-spines, 



0. paucispina. 

 ( 0. annulosa. 



eirf/ans. 



( ci\ 

 Four minute arm-spines. Mouth-shields as broad as long, < ' [ 



ncta. 

 'arretti. 



Ophiolepis paucispina Mull. & Trosch. 



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



OpIiiolepiK paucvipina. Syst. Asterid., p. 90. 



Ophiolepis pauciapina Lutkex. Addit. ad Hist. Oph., p. 102. 



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

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

 broader than lonir. 



