CHOROLOGY OF THE SPECIES. 



A.— LIST OF STATIONS AND THE GEOGRAPHICAL POSITIONS AT WHICH 

 ASTEROIDEA WERE COLLECTED, WITH THE ENUMERATION OF 

 THE SPECIES OBTAINED AT EACH STATION. 



I. Challenger- Expedition. 



Station I. South-west of Cape Finisterre. December 30, 1872. Lat. 41° 58' 0" N, 

 long. 9° 42' 0" W. Depth 1125 fathoms. Blue mud. 



Hymenaster membranaceits. 



Off the coast of Portugal: January 1873. Station and conditions not recorded. 

 Pararchaster armatus. Also at Stations 46 and 50. 



Station V. South of Cape St. Vincent. January 28, 1873. Lat. 35° 47' 0" N., long. 

 8° 23' 0" W, Depth 1090 fathoms. Globigerina ooze. Bottom temperature 

 38°"5 Fahr. ; surface temperature 61°"0 Fahr. 



Plutonaster bifrons. Also at Station 47. 



Station 3. South-west of the Canary Islands. February 18, 1873. Lat. 25° 45' 0" N., 

 long. ,20° 14' 0" W. Depth 1525 fathoms. Hard ground. Bottom tempera- 

 ture 37°'0 Fahr. ; surface temperature 65 o- Fahr. 



Nymphaster pvotentus. 

 Colpaster scutigerula. 



Station 24. North-west of St. Thomas, Virgin Islands. March 25, 1873. Lat. 18° 38' 

 30" N, long. 65° 5' 30" W. Depth 390 fathoms. Pteropod ooze. Surface 

 temperature 76° "0 Fahr. 



Brisinga cricophora. 



Station 36. Off Bermuda. April 22, 1873. Lat. 32° 7' 25" N., long. 65° 4' 0" W. 

 Depth 30 fathoms. Coral. Surface temperature 6 7° '5 Fahr. 



Chastaster longipes. Also at Station 75. 



