82 BULLETIN OF THE 
irregularly arched, covered above and below with a thick skin, which almost 
entirely obscures the fine disk-scales and the radial shields, which may be 
recognized as small, oval, smooth patches near the disk margin, on either side 
of the arm. Along the edge of the genital opening is a row of minute, closely 
joined squarish papilla, which extend only to the margin of the disk, the 
arm-comb being absent. Five very minute, blunt arm-spines, three situated 
low on the edge of side arm-plate and two above. Often they are rubbed off, 
and there seem to be none. Tentacle-scales of the mouth-tentacles similar to 
mouth-papille and on one side, closely continuous with them ; on the first pair 
there are four or five scales on each side ; on the second five or six on each side ; 
just outside the disk there are four scales on the inner side and none on the 
other; and a short distance beyond there are no scales. Color in alcohol, 
light gray. 
Station 157, 1950 fathoms, 4 specimens. 
Ophioglypha elevata sp. nov. 
Plate IV. Figs. 87 - 89. 
Special Marks. — Disk high and arched. Arms short and thick, Each 
under arm-plate has a median, elongated, bead-like swelling. 
Description of an Individual (Station 145). — Diameter of disk 6 mm. Length 
of arm about 11mm. Width of arm close to disk, without spines, 1.3 mm. Five 
short, square, closely joined mouth-papille on each side, and one longer dia- 
mond-shaped at apex of jaw. Mouth-shield longer than wide, broader without 
than within, deeply constricted at the sides, and curved at both ends ; length 
to breadth 1:.7. Side mouth-shields narrow, of even width, curving round 
the inner lobe of the mouth-shield and meeting within. First under arm-plate 
triangular, with angle inward and outer side curved ; second, third, and fourth 
plates four-sided, with outer edge, which is wider than inner, curved, and 
lateral sides re-enteringly curved. There is a longitudinal swelling on the 
under arm-plates which forms a continuous ridge within the disk. Side arm- 
plates wide, little swollen, constricted within, not meeting below on basal 
joints; separated above by the upper arm-plates, which are four-sided, much 
broader than long, wider without than within, with outer and inner edges 
straight, and lateral sides re-enteringly curved. Disk thick and arched, covered 
with small, swollen, irregular scales, with one large pentagonal primary plate 
in centre. Radial shields small, as wide as long, irregularly triangular, 
joined their entire length; length to breadth .7 :.7. Lower interbrachial 
space filled with small rounded scales ; along the free edge of the genital scale 
is a row of very minute pointed papille, which suddertly become long and 
spine-like as they pass upward to make the arm-comb. Five short blunt arm- 
spines, three well up on the edge of the side arm-plate, and two somewhat 
Shorter close to tentacle-pores. On the mouth-tentacle pores there are two 
large scales on either side ; the other pores within the disk have three long 
rounded scales on the inner side, and one very wide, thick, erect scale on the 
