OPIIIOPIIOLIS CARYL 



101 



and were thorny, as were also tlie spines and f^rains of the disk ; in the 

 centre of the disk a patch of white, and another at the base of each 

 arm. 



This species is interesting, as being the second of a genus which 

 before had but one nieinl)er. It is distinguislied from 0. heJlis ])y the 

 close and regular granulation of the disk, without s])ines above, and by 

 having no primary plates in the mterbrachial spaces. It seems, also, to 

 be a much smaller species. 



LIST OF SrECIMENS. 



C:italo<;ue 

 Number. 



Orifiinal Number 

 Number.! of Spec. 



Locality. 



When 

 Collected. 



■Wlieoce obtaiueJ. 



Nature of 

 Specimen. 



197 I . . 



198 I 1062 



10G2 



Museum of Comparatire Zoolof/ij. 



1 I MtMidocino, Cal. I I Alex. Ap;assiz. 



1 I Piigut Souiul. I I Dr. Keimerly. 



Smithsonian Institution, 

 3 I Puget Sound. I I Dr. Kennerly. 



Alcoholic. 



Alcoholic 



Ophiopholis Caryi Lysian. 



Ophiopholis Caryi Lym.\n. Proceetl. Boston Soc. Nat. Hist., VII. p. 2G1. 1860. 



Special Marks. — Small species : disk about 8""°' in diameter, and 

 closely covered with fine grains, without naked plates. 



Descrqjflou of a Specimen. — Diameter of disk, 8"""- ; from outer 

 side of mouth-shield to outer corner of opposite mouth-slit, o.o^''^' ; 

 width of arm without spines, 1.5"°- ; length of arm, 26.5"""- ; distance 

 fioni outer side of mouth-shield to inner points of teeth, to that 

 between outer corners of mouth-slits, 1.5 : 1.5. Mouth-papilhtt flat, 

 rounded, scale-like, three or four on each side. Teeth about eleven, 

 broad, short, stout, flat, square ; uppermost and lowest ones narrower 

 than those in middle ; uppermost one longest, with a rounded cutting 

 edge ; lowest one often split in two. Moitth-shields irregular, small, 

 usually rounded rhomboidal ; length to breadth, .6 : .8. Side mouth- 

 shields nearly meeting within, large and curved, closely soldered with 

 surrounding parts. Under arm-plates a little separated, squarish, with 

 curved lateral sides ; outer side slightly re-enteringly curved ; inner 

 side rather shorter than the outer, and made up of three short lines, 

 making an angle with each other ; length to breadth (eighth plate). 



