NORTH SIDE OF THE BAY OF BISCAY, AUGUST, 1906. 31 



(Hincks, 1868). South of the Eddystone (Bourne). Norway, 200 

 fathoms (Broch, 1903). Portugal (Nobre). Gulf of Gascogne, 100 

 fathoms; Azores, 75 fathoms (Pictet and Bedot). Off the Azores, 

 450 fathoms (Allman, 1888). Morocco, Cape Spartel, 60 fathoms ; 

 Cape Verde Islands, 220-320 fathoms (Billard). 



Diphasia tamarisca (Linn.). 



At Stations I. and XL, 75 fathoms, a few small colonies and frag- 

 ments were taken. Some of the colonies have gonophores. 



Bonnevie records this species along the Norwegian coast from 

 Kristiandsund to Hammerfest, and off the north-west coast of Norway 

 in lat. 69° 44', long. 16° 15' E., 650 fathoms, 0-66° C. ; and 71° 45' N., 

 15° 41' E., 622 fathoms, 097° C. 



Diphasia pinnata (Pallas). 



A splendid colony was taken at Station III., 75 fathoms. There 

 are over a dozen shoots, the largest about 6 inches in height, and several 

 are loaded with female gonophores. 



The colony when alive was of a deep carmine colour, which slowly 

 dissolved out in alcohol, and after its complete removal the colony 

 became a dark brownish colour. 



Distribution. South coast of Devon and Cornwall, about 30-40 

 fathoms (Hincks). As this species was not taken by the Challenger 

 Expedition, and is not mentioned in recent foreign records, its 

 occurrence outside the areas mentioned above is very doubtful. 



Diphasia alata (Hincks). 



At Station IV., 109 fathoms, a large colony, with many shoots and 

 branches, up to 5 inches in height, and a small colony were taken. 

 Both colonies were attached to worm-tubes. At Station V. several 

 large branches were again taken. 



The main stem is strengthened by a number of auxiliary tubes, 

 which run along one side of it, and decrease in number towards the 

 distal ends. 



Several of the large shoots bear female gonosomes. The gonangia 

 are similar to those of the male. 



Distribution. Norway, Stavanger, 50-100 fathoms (Bonnevie). 

 Shetlands, 40 fathoms (Hincks). Cornish coast (Hincks). Ireland, 

 west coast, 43 fathoms (Duerden). Bay of Biscay, Gulf of Gascogne, 

 75-164 fathoms ; Azores, 75-174 fathoms (Pictet and Bedot). Gulf 

 of Gascogne, 225 fathoms (Billard). 



Sertularia abietina (Linn.). 

 Ahietinaria ahietina, Nutting, 1904. 

 A fine old colony, closely covered with other small Hydroids, 



