94 BULLETIN OF THE 



dozen, besides the genital plates, which are composed of three pieces, the outer 

 one being the largest and thickest ; along their entire edge from the mouth- 

 shield to the outer edges of the radial shields is a row of fine, square, short 

 papillte, those nearest the mouth-shield being broader than long, while towards 

 the radial sliields they become very fine, much narrower than long ; there is a 

 group of similar papilla9 on the free outer end of the side mouth-shield. The 

 arm-spines are so short, thin, square, and closely soldered together as to look 

 like a continuous narrow border to the side arm-plate ; in shape they resemble 

 the arm-comb, and are about eight in number. The pores of the mouth-tenta- 

 cles have four or five scales on each side, similar to the mouth-papillse ; the 

 second has seven similar scales on the interbrachial side, and four on the other ; 

 the third five and four ; the fourth four and three ; beyond this three only on 

 the inner or interbrachial side. Color in alcohol, brownish-yellow. 

 Station 232, 340 fathoms, 1 specimen. 



Ophioglypha minuta sp. nov, 



Plate V. Figs* 117-119. 



Special Marks. — Interbrachial space below covered by only one or two 

 plates besides the genital scales. Upper arm-plates rudimentary or wanting. 

 Tentacle-pores of arm with only one rounded scale. 



Description of an Individual (Station 158). — Diameter of disk 5.5 mm. Length 

 of arm about 12 mm. Width of arm close to disk, withont spines, 1 mm. Six 

 short, squarish, closely set, longer than Avide mouth-papilla) on sides of angle, 

 and three short and bluntly pointed at apex of jaw. Mouth-shield as long as 

 broad, having a slight constriction towards the inner end, which is an obtuse 

 angle, outer side widely curved ; length to breadth 1:1. Side mouth-shields 

 longer than wirle, meeting within, and there forming a long angle inward ; 

 outer edges narrower than inner. Finst under arm-plate triangular, with 

 rounded angle inward, lateral sides having a slight re-entering curve, and outer 

 edge gently curved. Second under arm-plate pentagonal, length and breadth 

 about equal, having deep re-entering curves on the lateral sides, a narrow ob- 

 tuse angle within, and outer side curved ; beyond the second the plates are 

 triangular in shape, having an angle inward and outer side curved, and they 

 Ijecome rapidly less in size. Side arm-plates long and thick, beyond the sec- 

 ond under arin-j)]ate forming almost the entire covering of the arm, as there are 

 no upper arm-plates. Disk fiat and round, with a central group of six pri- 

 mary plates, wiiereof the middle one is pentagonal, while the five surrounding 

 it are tran8ver.<«e oval ; connecting these jdates are minute triangular scales ; 

 the interl)rachial spaces above are filled by two large plates, the inner one 

 broader tlian long, wiili outer edge straight, and inner edge broader than outer; 

 the marginal jjlate lias tlie inner edge straight, and the outer curved ; on either 

 side of the marginal plate are two minute semicircular scales, lladial sliields 

 three-sided, longer than broad, joined their entire length ; outer edges with a 



