460 



PEOF. P. M. DUNCAN ON SOME 



are seen external to the tentacle-scalea. There are eleven spines on 

 the fourth plate, and further out they are six and then four in 

 number. The tentacle- openings are large and long : the first has 

 four or five close, short, rounded scales on either side ; and the 

 second has five subspiniform scales on the side arm-plates, and 

 four small blunt ones on the lower arm-plate ; the next opening 

 has the same number of scales, and then four are found around 

 some, the number diminishing to one. The flat scales on the 

 lower arm-plate cease at the sixth, where they are nearest its 

 distal end. 



Ziocalitij. Korean Sea. Collected by Capt. St. John, 

 In the British Museum. 



Ophiogltpha sinensis, Lyman, Illust. Cat. Harvard Mus, 

 no. vi. p. 12 (1871). 



Many small specimens of this species were found in 40 fathoms 

 in the Korean Strait by Capt. St. John, E.N. 



In the British Museum. 



G-enus Ophiolepis, Miill. Sf Troscliel. 



OpnioLEPis MiEABiLis, sp. uov. Platcs IX. & X. figs. 12, 

 13, 14. 



The disk is large, swollen above, circular in outline, and without 

 arm-notches. The arms not more than twice the diameter of the 

 disk in length, are broad at the disk and taper rather suddenly, 

 becoming small towards their ends. 



Above, the disk is covered with scales of difi'erent sizes and 

 shapes ; they and the radial shields are minutely granular, and 

 are separated by continuous series of minute round scales in 

 single or double rows, and sometimes a minute scale is produced 

 into a short conical spine. The mosaic and regularity of orna- 

 ment is exquisitely regular. The scales are in rosette centrally, 

 and there are two large and some other scales in the interradial 

 space. The radial shields are large, long, separate, broadest and 

 rounded without, and angular and most distant within ; they are 

 convex, elongate pip-shaped, and are granular, and each is sur- 

 rounded by a mosaic of minute convex scales. They are, more- 

 over, separated by two or three moderate-sized scales, each of 

 which is surrounded by minute ones. Several short, stout, and 

 rather blunt spines are at the margin of the disk ; and they 

 become smaller and more numerous and crowded in theinterbra- 

 chial space, towards the mouth-shield. 



