238 BULLETIN OF THE 



Ophioglypha abyssorum sp. nov. 



Plate III. Figs. 25-27. 



Special Marks. — Surfoce microscopically tuberculous. Arm-spines rudi- 

 mentary, or wanting. No papilla3 along genital scale on the under surface, 

 and only two or three in each arm-comb. Side arm-plates not swollen. 



Descriftion ofan Individual. — Diameter of disk 11 mm. Width of arm 

 near disk 2 mm. Four or five rectangular, crowded papilla on either side of 

 a mouth-angle, and one diamond-shaped (lowest tooth) at apex. Mouth- 

 shields wide angular heart-shape, with a peak inward ; length to breadth, 

 2.5 : 2. Side mouth-shields rather wide, and meeting fully within. First 

 under arm-i)late larger than the rest, longer than wide, bell-shaped with a 

 very gentle curv« without, and a long curve within ; the next two plates are 

 wider than long, rounded pentagonal with an angle inward ; those beyond 

 are smaller, almost transverse diamond in form, with outer side gently curved. 

 Side arm-plates meeting fully below ; also above, beyond the first two upper 

 arm-plates, which are rounded diamond-shape with the inner angle truncated ; 

 those beyond are as broad as long, and diamond-shaped with rounded angles. 

 Disk smooth and not very thick, having in the centre a large, round primary 

 plate, which is separated from the other five by a circle of smaller angular 

 plates, similar to those which cover the rest of the disk, some of which are, 

 however, larger. Radial shields large and a little sunken, of a short, irregular 

 pear-seed shape, almost wholly separated by an outer and an inner wedge of 

 disk-scales ; length to breadth, 3 : 2.3. Interbrachial spaces below chiefly 

 filled by two large central plates and the broad genital scales, which bear no 

 papilla3 on their free edge. It is only on the upper surface of the arm, just 

 outside the radial shields, that a rudimentary comb is found, made up of two 

 or three block-like papillae. The joints within the disk have one or two rudi- 

 mentary spines, the rest none. Mouth-tentacle pores surrounded by eight or 

 nine small, crowded block-like scales ; the next two have five such scales ; 

 those beyond, one very minute papilla, or none. Color in alcohol, pale gi'ay. 



Station 140, Virgen Gorda, 1,097 fathoms, 5 specimens. 



The species differs from (). confragosa in its even, microscopically tubercu- 

 lated surface, its side arm-plates not swollen, under arm-plates of a different 

 shape, and arm-spines rudimentary or wanting. 



Ophioglypha scutata sp- nov. 



Plate IV. Figs. 28-30. 



Special 3rarks. — Upper disk chiefly covered by large radial shields and 

 primary plates, with two plates in each interbrachial space. Papilla; of genital 

 scale blunt, and forming above a close row. Three little arm-spines about 

 one third as long as a joint. 



