FAUNA OF THE OUTER WESTERN AREA OF THE CHANNEL, 327 



Halecium muricatum (Ellis and Solander) ? 



At Positions 14 and 32. 



Two small colonies in each case, growing on Ccllaria and the dead 

 stem of a Sertularian respectively. Height, from 8 to 27 mm. These 

 specimens appear to belong to this species, but in the absence of any 

 gonothecae their identity is left in doubt. 



Depth, 42-44 fath. 



Halecium labrosum. Alder. 



At Position 12 ; one small colony of 20 mm. in height, growing 



on a tube of Pallasia inurata. 

 Depth, 42 fath. 



Halecium tenellum, Hincks. 



At Positions 49, 59, 62, 80. 



On Anfennularia, Cellaria, etc. Plentiful at the two last-named 

 positions. 



Depth, 47-51 fath. 



SERTULAEIIDAE. 

 Sertularella gayi (Lamouroux). 



At nearly all positions, including the last, 80. 



Depth, 40-51 fath. 



The species occurred rather plentifully on the fine sandy ground 

 covered by the first cruise, i.e. within 10 miles of the Eddy stone. On 

 the rougher ground outside this, fair-sized colonies were found at 

 Positions 60 and 80, some specimens at the latter point bearing gon- 

 angia. But in the great majority of the hauls the material obtained 

 was small in quantity, and in many cases only very young colonies 

 were observed. 



Sertularella polyzonias (Linnaeus). 



This species was only recorded from Positions 33, 49, and 62, in 

 small colonies. It is not improbable that it was overlooked in 

 some cases among the material of the preceding species. 

 Depth, 42-50 fath. 



Sertularella tenella (Alder). 



At Positions 11, 14, 31, 35, 42, 49, 53, 56, 67, 80. 



Depth, 40-51 fath. 



On Sertularia abietina, Sertularella gayi, Diphasia attenuata, HydralU 

 mania, etc., and on Cellaria ; many colonies occurring at Positions 14, 

 35, and 56. 



