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 
papille, those nearest the mouth-shield being broader than long, while towards 
the radial shields they become very fine, much narrower than long ; there is a 
group of similar papillae 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-papille ; 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, without spines, 1 mm. Six 
short, squarish, closely set, longer than wide mouth-papille 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 wide, meeting within, and there forming a long angle inward; 
outer edges narrower than inner. First 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 
become rapidly less in size. Side arm-plates long and thick, beyond the sec- 
ond under arm-plate forming almost the entire covering of the arm, as there are 
no upper arm-plates. Disk flat and round, with a central group of six pri- 
mary plates, whereof the middle one is pentagonal, while the five surrounding 
it are transverse oval; connecting these plates are minute triangular scales ; 
the interbrachial spaces above are filled by two large plates, the inner one 
broader than long, with outer edge straight, and inner edge broader than outer ; 
the marginal plate has the inner edge straight, and the outer curved ; on either 
side of the marginal plate are two minute semicircular scales. Radial shields 
three-sided, longer than broad, joined their entire length ; outer edges with a 
