78 BULLETIN OF THE 



Ophioglypha jejuna sp. nov. 



Plate II. rigs. 55, 56. 



Special Marks. — Three slender, pointed arm-spines, about two thirds as long 

 as a joint. Disk-scales few and mostly large. Radial shields large and joined. 

 Papillae of arm-comb close-set, flat, and with rounded ends. 



Description of an Individual (off Tristan d'Acunha). — Diameter of disk 

 5 mm. Width of arm 1 mm. Mouth-papilloe small, tooth-like, and close-set, 

 five on each side, with long pointed one at apex of jaw ; those near the outer 

 angle of the jaw broader than long, growing longer as they near the inner 

 angle. Mouth-shield pentagonal, length and breadth about equal, the outer 

 and lateral sides curved, with corners rounded and a very blunt angle inward. 

 Side mouth-shields long and narrow, curved, with club-like outer ends ; nar- 

 rower within, where they barely meet. First under arm-plate large triangular, 

 with outer end curved and a blunt angle inward ; second and third plate 

 five-sided, with lateral sides nearly straight and outer corners rounded. Side 

 arm-plates broad, slightly swollen, meeting below, but separated above on first 

 two joints l)y upper arm-plates, which are wedge-shaped, with outer side 

 curved and a long sharp angle within ; those beyond are similar, but separated 

 by side arm-i)late. Disk flat and smooth, covered with thin rounded plates or 

 scales ; in centre of upper surface is a close rosette of five round primary plate?, 

 with three small ones in their midst ; in each interbrachial space are two large 

 rounded plates, of which the outer is marginal, with some small scales on 

 either side. Radial shields rudely triangular, with an angle inward, joined, 

 except at their inner points, where they are separated by a small wedge-scale ; 

 length to breadth 1 : .7. Genital scales long and narrow, wider without than 

 within, bearing on their free edge a row of fine, close-set, tooth-like papillaj, 

 extending to base of upper arm-plate, where they become scale-like and form 

 the arm-comb. Interbrachial spaces below covered by half a dozen rounded 

 plates or scales of several sizes, whereof the largest lies on the margin. Arm- 

 spines three, delicately tapering, about two thirds as long as a joint, equally 

 Hpaced on the side arm-plate. Scales of mouth-tentacles small and tooth- 

 like ; four on the brachial side and five on the other ; on the next three pores 

 are only two pointed, spine-like scales. Color in alcohol, brown. 



Station 135, off Tristan d'Acunha, 500 fathoms, 2 specimens. Station 164 a, 

 410 fathoms, 1 specimen. 



Ophioglypha brevispina (?) E. A. Smith. 



Ophioglypha brevispina E. A. Smitif, Ann. and Mng. N. H., XVII. p. 112, Feb., 

 1876. Transit of Venus Expedition, p. 11, PI. XVII., Figs. 5, a-c. 



Plate II. Flsfs. 44 - 40. 



Special Marks. — Three short, blunt, peg-like arm-spines, evenly spaced. 

 PapilL-c of arm-comb short, close-set, and sharp. Disk-scales of moderate size, 

 thick and swollen. Very small, narrow side mouth-shields. 



