REPORT ON THE ASTEROIDEA. 675 



Station 335. North of the Island of Tristan da Cimha. March 16, 1876. Lat. 

 32° 24' 0" S., long. 13° 5' 0" W. Depth 1425 fathoms. Pteropod ooze. 

 Bottom temperature 37° "0 Fahr. ; surface temperature 7 3° 5 Fahr. 

 Hymenaster anomalus. 



Station 343. Off the Island of Ascension. March 27, 1876. Lat. 8° 3' 0" S., long. 14° 

 27' 0" W. Depth 425 fathoms. Volcanic sand. Bottom temperature 40°'3 

 Fahr.; surface temperature 80°"8 Fahr. 



Pararchaster spinosissimus. 



Plutonaster marginatus. 



Station 346. Between the Guinea coast of Africa and the Island of Ascension. April 

 6, 1876. Lat. 2° 42' 0" S., long 14° 41' 0" W. Depth 2350 fathoms. 

 Globigerina ooze. Bottom temperature 34°"0 Fahr. ; surface temperature 

 8 2° 7 Fahr. 



Styracaster horridus. 



Freyella tuberculoid,. Also at Station 89. 



II. "Porcupine" Expeditions. 



i. 1869 Cruise. 



Station 8 (1869). Off the west coast of Ireland. Lat. 53° 15' N., long. 11° 51' W. Depth 

 106 fathoms. Bottom temperature 10 o- 7 C. ; surface temperature 12 0, 3 C. 



Porania pidvillus. 



Station 18 (1869). Off the west coast of Ireland, north-west of Achill Head. Lat. 

 54° 15' N., long. 11° 9' W. Depth 183 fathoms. Bottom temperature 

 9°'7 C. ; surface temperature ll° - 8 C. 



Astropecten irregularis. Also at Stations 46, 67, and 68. 



Station 19 (1869). West of Donegal Bay. Lat. 54° 53' N., long. 10° 56' W. Depth 

 1360 fathoms. Bottom temperature 3 o, C. ; surface temperature 12°'6 C. 



Plutonaster oifrons. Also at Stations 57 and 58. 



Station 23 (1869). South of Rockall Bank. Lat. 56° 7' N., long. 14° 19' W. Depth 

 630 fathoms. Bottom temperature 6°'4 C. ; surface temperature 14 o- C. 



Brisinga coronata. Also at Station 45 ; and in 1870 at Station 13. 



