KEPOET ON THE ASTEROIDEA. 



287 



/3. Bathymetrical range: 5 to 150 fathoms. 



Gnathaster rneridionalis ranges from 5 to 150 fathoms, and Gnathaster 

 elongatus from 50 to 150 fathoms. Gnathaster pilulatus is found in 55 

 fathoms. Gnathaster singularis is recorded from shallow water to 30 fathoms, 

 Gnathaster paxillosus and Gnathaster grayi from 9 to 10 fathoms. 



Greatest range of one species : Gnathaster rneridionalis, 5 to 150 fathoms. 



y. Nature of the Sea-bottom : The character of the ground is only recorded in the 

 case of the species above mentioned. Gnathaster rneridionalis and Gnath- 

 aster elongatus are found on volcanic mud and coarse gravel (the latter in 150 

 fathoms). Gnathaster pilulatus inhabits a sandy bottom. Gnathaster singu- 

 laris occurs on rock, kelp, and mud. Gnathaster paxillosus and Gnathaster 

 grayi on sand. 



Cliorological Synopsis of the Species herein mentioned. 



1. Gnathaster rneridionalis, Smith, sp. (PI. XL VII. figs. 1 and 2; PI. XLIX. figs. 11 

 and 12). 



Astrogonium meridionale, Smith, 1876, Ann. and Mag. Nat. Hist., ser. 4, voL xvii. p. 109. 

 Pentagonaster rneridionalis, Smith, 1879, Phil Trans., ZooL Kerguelen Island, vol. clxviii. p. 276, 

 pL xvi. figs. 6, 6a. 



Localities. — Station 145. Off Marion Island. December 26, 1873. Depth 50 fathoms. 



Station 149d. Royal Sound, Kerguelen Island. January 20, 1874. Depth 28 

 fathoms. 



Station 149h. Off Cumberland Bay, Kerguelen Island. January 29, 1874. Depth 

 127 fathoms. The bottom deposit at all Stations in the neighbourhood of Kerguelen is 

 a greenish volcanic mud. 



Station 150. Between Kerguelen Island and Heard Island. February 2, 1874. Lat. 

 52° 4' 0" S., long. 71° 22' 0" E. Depth 150 fathoms. Coarse gravel. Bottom tempera- 

 ture 35 0, 2 Fahr. ; surface temperature 37 0, 5 Fahr. 



Station 151. Off Heard Island. February 7, 1874. Lat. 52° 59' 30" S., long. 73 c 

 33' 30" E. Depth 75 fathoms. Volcanic mud. Surface temperature 36°-2 Fahr. 



Remarks.— A fine series of this species was obtained off Kerguelen, Marion, and Heard 



