92 BULLETIN OF THE 



seven plates are broader than long, octagonal, and separated Ly -wide pores or 

 depressions ; the remainder of the under arm-plates are quadrangular, with 

 an angle within and without. Side arm-plates broad and somewhat swollen, 

 meeting below only towards the tip of the arm ; separated above by the upper 

 arm-plates, which are broader than long, and four-sided, with lateral sides 

 straight, and outer edge much wider than inner, and curved ; towards the tip 

 of the arm they are diamond-shapte, with truncated angles without and Avithin. 

 Disk round and high, covered with large, much swollen plates, the central 

 primary being pentagonal, surrounded by live others, large and more or less 

 rounded ; in the upper interbrachial space are two plates, the inner one 

 rounded ; the outer marginal one much broader than long, and somewhat 

 swollen. Kadial shields joined, small, and irregular in shape, curved without. 

 Lower interbrachial space covered l;y two much swollen plates, longer than 

 wide, extending from the outer edge of the mouth-shield to the marginal plate. 

 Genital scales much longer than wide, wider without, tapering inward, carrj'ing 

 along their free edge, from the outer edge of the mouth-shield to the edge of the 

 arm-comb, a row of minute papillai, Avhich become somewhat longer as they 

 appear above the arm to form the comb. Two, and sometimes three, small, 

 delicately tapering arm-spines, about half as long as a joint. Tentacle-scales on 

 first pair of pores, three on either side ; on the second, three or four on the in- 

 terbrachial side, and two on the brachial ; third pair the same, but only one on 

 the brachial ; beyond there are three long blunt scales on the interbrachial side. 

 Color in alcohol, white. 



Although from only 129 fathoms, this species has the look of a deep-sea 

 inhabitant. 



Station 192, 129 fathoms, 1 specimen. 



Ophioglypha rugosa sp. nov. 



Plate IV. Figs. 90, 91. 



Special Maries. — Disk covered with much swollen, lumpy plates. Genital 

 scales wide, thick, and in a single piece. Basal under arm-plates longer than 

 wide. Papilla; of arm-comb short, flat, close-set, and with rounded ends. 



JJescription of an Individual (Station 169). — Diameter of disk 7 mm. 

 Width of arm close to disk 1.5 mm. Four short tooth-like mouth-papilla) on 

 each side, with one largerat apex of jaw. Mouth-shields j)entagonal ; outer and 

 lateral sides straight, with very blunt angle within ; outer comers rounded ; 

 length to brea<lth 1.3 : 1. Side mouth-shields narrow, with a wavy outline, 

 meeting within. First under arm-plate triangular, with an angle within and 

 outer side curved ; second jtlate longer, with inner angle truncated ; beyond 

 this they are pentagonal, with outer side curved, lateral sides re-enteringly 

 curved, and an angle within. Side arm-])lates broad, meeting below, but sepa- 

 rated aljove, near base of arm, by the upper ann-plates, which are long wedge- 

 shape, with outer edge curved, and an angle within, except the first two, 

 which have the inner angle truncated. Disk angular, covered with large, 



