92 BULLETIN OF THE 
seven plates are broader than long, octagonal, and separated by wide pores or 
depressions ; the remainder of the under arm-plates are quadrangular, with 
an angle within and without. Side arm-plates broad and somewhat swollen, 
meeting below only towards the tip of the arm ; separated above by the upper 
arm-plates, which are broader than long, and four-sided, with lateral sides 
straight, and outer edge much wider than inner, and curved ; towards the tip 
of the arm they are diamond-shape, with truncated angles without and within. 
Disk round and high, covered with large, much swollen plates, the central 
primary being pentagonal, surrounded by five others, large and more or less 
rounded ; in the upper interbrachial space are two plates, the inner one 
rounded ; the outer marginal one much broader than long, and somewhat 
swollen. Radial shields joined, small, and irregular in shape, curved without. 
Lower interbrachial space covered by two much swollen plates, longer than 
wide, extending from the outer edge of the mouth-shield to the marginal plate, 
Genital scales much longer than wide, wider without, tapering inward, carrying 
along their free edge, from the outer edge of the mouth-shield to the edge of the 
arm-comb, a row of minute papilla, which become somewhat longer as they 
appear above the arm to form the comb. Two, and sometimes three, small, 
delicately tapering arm-spines, about half as long as a joint. Tentacle-scales on 
first pair of pores, three on either side ; on the second, three or four on the in- 
terbrachial side, and two on the brachial ; third pair the same, but only one on 
the brachial ; beyond there are three long blunt scales on the interbrachial side, 
Jolor in alcohol, white. 
Although from only 129 fathoms, this species has the look of a deep-sea 
inhabitant. 
Station 192, 129 fathoms, 1 specimen. 
Ophioglypha rugosa sp. nov. 
Plate IV. Figs. 90, 91. 
Special Marks. — Disk covered with much swollen, lumpy plates. Genital 
scales wide, thick, and in a single piece. Basal under arm-plates longer than 
wide. Papillæ of arm-comb short, flat, close-set, and with rounded ends. 
Description of an Individual (Station 169). — Diameter of disk 7 mm. 
Width of arm close to disk 1.5 mm. Four short tooth-like mouth-papilloo on 
each side, with one largerat apex of jaw. Mouth-shields pentagonal ; outer and 
lateral sides straight, with very blunt angle within ; outer corners rounded ; 
length to breadth 1.3: 1. Side mouth-shields narrow, with a wavy outline, 
meeting within. First under arm-plate triangular, with an angle within and 
outer side eurved ; second. plate longer, with inner angle truncated ; beyond 
this they are pentagonal, with outer side curved, lateral sides re-enteringly 
curved, and an angle within. Side arm-plates broad, meeting below, but sepa- 
rated above, near base of arm, by the upper arm-plates, which are long wedge- 
Shape, with outer edge curved, and an angle within, except the first two, 
which have the inner angle truncated. Disk angular, covered with large, 
