72 NATURAL HISTOEY OF KERGUELEN ISLAND. 'i 



the grooves at a wide angle. Beyond these there is a longitudinal series 

 of larger and stouter obtusely conical ventral spines, arranged in diver- 

 gent clusters of two to four. Between these and the adambulacral series 

 there are a few scattered spines and a series of large branchial papillae^ 

 mostly placed singly ; but above them the papillae are numerous, mostly 

 crowded in clusters of four to six, both on the sides and dorsal surface. 

 Along the sides of the rays and separated from the ventral series by a 

 wide space there is a row of plates a little more prominent and larger 

 than the rest, bearing spines that are a little larger and more elongated f 

 otherwise the spines are irregularly scattered, and nearly uniform in 

 character, over the upper surfaces of the rays and disk. These spines 

 are small, short, with obtusely rounded, and usually swollen, rough 

 tips; they mostly arise singly from the dorsal plates, which are thin 

 and flat, and rather closely united together. Madreporic plate nearer 

 the centre than the edge of the disk, small, inconspicuous, rather sunken,, 

 composed of few convolutions. Major pedicellarise few, mostly situated 

 along the inner border of the ambulacral grooves, longovate/»with ob- 

 tuse tips; minor pedicellarise few, with appressed spatulate or broadly 

 rounded valves ; they do not form wreaths around the spines, but are 

 mostly placed singly on the naked spaces between them, especially on 

 the sides and ventral surface of the rays. Color of alcoholic specimens, 

 dark reddish brown above, yellowish beneath. 



One of the largest specimens measures from mouth to edge of disk,. 

 12™™ ; mouth to tip of rays, 30"™ ; breadth of rays at base, 12™" ; length 

 of adambulacral spines, 2.5™™. Smaller specimens have the rays rela- 

 tively stouter and broader. 



Kerguelen Island, on rocky beach, common ; Dr. J. H. Kidder, 1874. 



OPHIUROIDEA. 



Ophioglypha hexactis, E. a. Smith.* 



Annals and Magazine of Natural History. Vol. 17, iii, February, 1876. 



Disk hexagonal, with very shallow notches at the bases of the six 

 rays; upper surface slightly swollen, covered with numerous irregular, 



* This species had been described as new, under another name, but the description by- 

 Mr. Smith was received while correcting the proof. Although there seems to be no ques- 

 tion as to the identity of the species, my specimens differ slightly from those described 

 by Mr. Smith. Therefore I have allowed the description to remain, without change. 



In the article referred to Mr. Smith also describes the following species from Ker- 

 guelen Island; Asterias meridionalis, Perrier; A. Perrieri, S. ; Pedicellaster scaber, S.; 

 Othilia spinulifera, S. ; Pteraster affinis, S. ; Porania antarctica, S. ; Astrogonium meri- 

 dionale, S. ; Leptychaster kerguelenensis, S. ; Ophiacaniha vivipara, ? Ljung. ; OpMoglypha 

 hreri/tpina. S. 



