V. '07. 4 



Like the Alcyonaria, the Madreporarian Corals in this list 

 are nearly all new to the Irish coast. Perhaps the most in- 

 teresting among them, and also the most beautiful, are the 

 specimens of Stephanotrochus diadema and Flabellum alabas- 

 trum. 



In conclusion I have to thank Dr. E. P. Wright for very 

 generously placing at my disposal fragments of interesting 

 type specimens, and Professor J. Arthur Thomson for most 

 kindly examining several specimens, especially some belong- 

 ing to the difficult genera Acanthogorgia and Paramuricea, 

 and giving me his valuable advice and assistance. 



ALCYONARIA, 



ORDER STOLONIFERA. 

 FAMILY CORNULARIIDAE. 



Sarcodictyon catenata, Forbes, 



Helga, CXXIXd. 40 mi. W.N.W. of Cleggan Head, 



fms. : bottom temperature, 9'3 C. ; llth Septem- 

 ber, 1901. 



" This species was dredged at the above locality." 

 S. J. HICKSON. 



Additional record : 



S.K. 480. Lat., N., 51 23'; Long., W., 11 38'; 468 fins. ; 

 temperature at 400 fms., 9'55 C. ; 28th August, 

 1907. 



The specimens obtained at this station were of a pale yel- 

 lowish colour, with colourless spicules. 



This species has been previously taken a few times off the 

 north-east, south, and west coasts of Ireland. 



ORDER A LC YON ACE A. 

 FAMILY ALGYONIIDAE. 



Alcyonium digitatum, Linn. 



S.K. 118.2J rni. N.E.JE. of Kathlin Island, Lat., N., 55 

 20'' ; Long., W., 6 8' ; 103 fms. ; 13th May, 1904. 



S.K. 118fl. 2 mi. N.E.JE of Rathlin Island, Lat., N., 

 55 19' 45" ; Long., W., 6 10' ; 115 fms. ; 13th May, 

 1904. 



" Alcyonium digitatum is usually found in shallow 

 I' water up to 40-50 fms. It has, however, been taken in 

 11 deep water, and is known to occur in the Bay of Biscay 

 " at depths of over 300 fms." S. J. HICKSON. 



