BULLETIN OF THE 
Ophioglypha undata sp. nov. 
Plate IV. Figs. 101, 102. 
Special Marks. — Four minute blunt arm-spines. Disk-plates rough and 
lumpy, with rosette of large primaries. Under arm-plates pentagonal. Disk 
high. Basal under arm-plates about as long as broad. Arms high and rounded. 
Description of an Individual (Station 176).— Diameter of disk 3.5 mm. 
Width of arm close to disk 1mm, Five mouth-papille on either side, of which 
the three outer ones are squarish, and the two innermost pointed and similar to 
the large one at apex of jaw. Mouth-shields five-sided, with outer lateral cor- 
ners curved and a blunt angle within ; length to breadth .7 :.5. Side mouth- 
shields rather large, longer than wide; wider without than within, where they 
meet. First under arm-plate long, three-sided, with angles much rounded and 
lateral sides re-enteringly curved ; second and third five-sided, with outer cor- 
ners rounded, an angle inward, and lateral sides re-enteringly curved ; those 
beyond grow rapidly smaller, but have the same generalform. Side arm-plates 
much swollen, but constricted at their inner margin, meeting widely above and 
below beyond the disk. The first upper arm- plate is triangular, with outer edge 
curved ; the second diamond-shaped, having the inner angle slightly truncated ; 
beyond this they become rapidly smaller and are diamond-shaped. Disk-plates 
above thick, and overlapping like tiles; in the centre is a rosette of the six 
primary plates, the middle one being pentagonal, and those surrounding it 
transverse oval; on the outer edge of each of these latter plates are one large 
and two smaller semicircular plates ; in the interbrachial spaces are two large 
rounded plates, the outer one extending quite to the margin of the disk. 
Radial shields about as broad as long, angular, closely soldered together. On 
the under surface the plates are rounded, and so much swollen as to form 
knobs with furrows between, the three along the margin being larger than the 
others, Genital scales narrow, with a row of seven or eight pointed papilla on 
the free edge, while the papille of the arm-comb are longer and more slender. 
Four minute blunt arm-spines on the basal joints. The pores of the mouth- 
tentacles do not open into the mouth-slit : they have three rounded scales on 
either side ; the next two have two scales on either side, and beyond two on 
the inner and one on the outer side. Color in alcohol, gray. 
Station 176, 1450 fathoms, 1 specimen. 
Ophioglypha lapidaria sp. nov. 
Plate III. Figs. 67 - 69, 
Special Marks. — Eleven short, pointed, close-set arm-spines. Mouth-shields 
trefoil. Under arm-plates squarish. About eight tentacle-scales to each pore 
within the disk. Disk high. Basal under arm-plates about as long as broad. 
Description of an Individual (Station 235). — Diameter of disk 11 mm. 
Width of arm close to disk 2.5 mm. Five or six short square mouth-papillo 
on each side, and a cluster of two or three larger at apex of jaw. Mouth- 
