OPHITTEOIDEA TEOM THE KOREAN SEAS. 449 



III. Description of the Species. 



G-enus Ophioglypha, Lyman. 



1. OpHipaLTPHA EoRBESi, sp. nov. Plate IX. figs. 1, 2, 3. 



A very Ophiomusoid-lookiBg form, but having tentacles as far 

 out on tlie arm as the seventeentli plate. 



The disk is pentagonal, rather thick, flat abovCj, and is notched 

 for the arms, which are slender and tapering. The scales on the 

 upper part of the disk are large, few in number, and very regu- 

 larly placed ; there is a rosette, the central scale being pentangu- 

 lar, and the others are larger and rounder, and two large rectan- 

 gular scales reach from its circumference to the interradial space, 

 which is filled by them, and one even bends downwards below the 

 upper margin. One or two very small scales are at the edges of 

 these larger. A small scale separates the radial shields within. 

 The radial shields are large, about as broad as long, curved at the 

 free side, straight at the edge over the arm, united by the greater 

 part of their inner side, and broad and blunt at their end near the 

 rosette. The notch for the upper arm-scale is small, and there is 

 some swelling of the shields near their junction. The radial 

 ■scales are large, long and broad, and the curved free edge is 

 armed with about ten or more short, distinct spinules, which, di- 

 minish in size as they merge into some very minute ones at the 

 edge of the generative plate, close to the mouth-shield. 



The interbrachial space, below the margin of the disk, is occu- 

 pied by a large scale, which reaches to the distal edge of the mouth- 

 shield : there is a small scale with a slight boss on it between this 

 scale and the generative plate. The mouth-shields are large, 

 occupy nearly the whole of the space between the arms, and are 

 longer than broad ; they are broad without and rounded ; the sides 

 are long and rather straight ; and quite within there is an angular 

 process with a sloping rounded shoulder, which forms the sides 



LINN. JOUEN. — ZOOLOGY, TOL. XIY. 33 



