V. '07. 9 



S.R. 502. Lat., N., 50 46'; Long., W., 11 21'; 447-515 

 fms. ; bottom temperature, 8'8 C. ; llth September, 

 1907. One small fragment. 



Specimens of Acanella arbuscula were previously taken on 

 one occasion off the south-west coast of Ireland in 750 fms. by 

 the Royal Irish Academy Expedition of 1888. 



Chelidonisis aurantiaca, Studer. 



S.R, 504. -Lat., N., 50 42'; Long., W., 11 18'; 627-728 

 fms.; temperature at 600 fms., 8'22 C. ; 12th Sep- 

 tember, 1907. 



S.R. 505. Lat., N., 50 39'; Long., W., 11 14'; 464-627 

 fms. ; 12th September, 1907. Two small fragments. 



Many specimens of this pretty coral were obtained. They 

 are more or less broken, as the branches easily separate at the 

 horny joints. The species was described (Studer, 1901) from 

 specimens taken in deep water off the Azores. Among the 

 Irish specimens the main stem of the larger colonies has a 

 greater diameter than the branches, and the polyps are not 

 strictly confined to the lateral faces of the stem and branches. 

 One colony, which is incomplete, reaches a height of 80 mm. 

 All the type specimens were broken off from their support, but 

 two small colonies in this collection are growing on a piece of 

 dead Madreporarian coral, to which they are attached by 

 means of a flattened disc-like expansion. 



FAMILY PRIMNOIDAE. 



Caligorgia flabellum (Ehrenberg.) 



S.R. 483. Lat., N., 51 37'; Long., W., 11 56' ; 610-664 

 fms.; temperature at 550 fms., 8'34 C. ; 30th 

 August, 1907. 



S.R. 487. Lat., N., 51 36'; Long., W., 11 57'; 540-660 

 fms.; temperature at 500 fms., 8'65 C. ; 3rd Sep- 

 tember, 1907. 



S.R, 489. Lat., N., 31 35'; Long., W., 11 55'; 720 fms. ; 

 4th September, 1907. 



Several fine specimens belonging to this species, which has 

 recently been fully described by Dr. Versluys (1906), are in 

 the collection. 



The largest reaches a height of about 117 cm. and mea- 

 sures 114 cm. across the widest part of the colony. A good 

 idea of its general appearance can be obtained from the colony 

 figured by Dr. Versluys (1906, PI. v.), to which it bears a 

 close resemblance. 



A second specimen, growing from among a mass of Am- 

 phikelia, is rather more than 1 metre in height, but the 

 branches are not so widely spreading. Two smaller colonies 

 were also obtained. 



