90 BULLETIN OF THE 



Ophioglypha undata sp. nov. 



Plate IV. Figs. 101, 103. 



Special Marks. — Four minute blunt arm-spines. Disk-plates rough and 

 lumpy, -with rosette of large primaries. Under arm-plates pentagonal. Disk 

 Ligli. Basal under arm-plates about as long as broad. Arms Ligh and rounded. 



DcscrijJiion of an Individual (Station 176). — Diameter of disk 3.5 mm. 

 Width of arm close to disk 1 mm. Five moutb-papillaj on either side, of wbich 

 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-euteringly 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 general form. 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 fliey 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 semicii'cular 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 romided, 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 papillae on 

 the free edge, while the papilla) 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 pp. nov. 



Plate III. Figs. 67 -C9. 



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 undca- arm-plates about as long us 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 scjuare niouth-papillaj 

 on each side, and a cluster of two or three larger at apex of jaw. Mouth- 



