MUSEUM OF COMPARATIVE ZOOLOGY. 97 



Station 150, 150 fathoms, 2 specimens. Station 151, 75 fathoms, 8 speci- 

 mens. Christmas Harbor, Kergueleu Islands, 120 fathoms, 12 + specimens. 

 Royal Sound, Kerguelen Islands, 28 fathoms, 12,+ specimens. 



Ophioglypha inornata sp. nov. 



Plate II. Tigs. 20, 27. 



Special Marks. — Side mouth-shields small. Mouth-shield broader than 

 long, with a peak inward. Disk and arm plates thick, swollen, and closely 

 soldered. Mouth-papilkc and scales of mouth-tentacles thick, squarish, irreg- 

 ular, and crowded. 



Description of an Individual (Station 106). — Diameter of disk 10 mm. 

 Length of arm about 23 mm. Width of arm close to disk, \vithout spines, 

 2 mm. Five or si.\ short, bead-like, closely soldered mouth-papillaj on each 

 side, with one much longer at apex of jaw. Mouth-shields broader than long, 

 small, rounded triangular, with angle inward, and outer edge curved. Side 

 mouth-shields short, pointed oval, occupying inner sides of the mouth-shield 

 and meeting broadly within. First under arm-plate rounded, with a long 

 curve within and an obtuse angle without ; second pentagonal, with an angle 

 inward, outer side wide, and laterals re-enteringly curved ; beyond these the 

 plates become broader than long, with an angle within and a curve without. 

 Side arm-plates thick, slightly swollen, meeting broadly below ; separated above 

 by upper arm-plates, which are thick, rather small, of a rounded diamond- 

 shape, and as long as broad. Disk rather thick, swollen, covered with thick, 

 minutely tuberculous plates. Radial shields irregular in form, inner edges 

 nearly circular or oval, diverging inward, where they are separated by a single 

 row of three scales ; in each interbrachial space is a marginal plate connecting 

 the radial shields. In centre of disk above are six round, well-marked pri- 

 mary plates, separated from each other and from the radial shield by single 

 lines of much smaller plates. Interbrachial space below covered chiefly by 

 a large marginal plate, and two smaller between it and the mouth-shield. 

 Genital plates short, thick, broader within, tapering outward, where they bear 

 small, irregularly placed papilla;, which make above a sort of arm-comb. Arm- 

 spines minute and hard to see, one near upper arm-plate and two or three near 

 the under. Tentacle-scales minute ; on the pores of the mouth-tentacles are 

 four on one side and three on the other ; the second pore, which is near the 

 inner end of the arm-plate, has only three ; and the third two. Color in 

 alcohol, graj'. 



Station 106, 1850 fathoms, 3 specimens. 



Ophioglypha confragosa sp. nov. 



Plate II. Figs. 38, 30 - 57 



Special Marks. — Disk-plates irregular and humpy. A group of papilla) 

 near the arm, on margin of interbrachial space. Disk and arm plates thick, 



