DUKING THE SUMMER OF 1907. 225 



remained inserted for some considerable time. P. littoralc was ob- 

 served feeding in a similar manner upon CJiotidr actinia digitata in the 

 region of the Great Fisher Bank, and Sagartia miniata from the Sole 

 Pit, neither the tough body wall in one case nor the acontia in the 

 other being sufficient protection. The coloured tissues of the anemone 

 were often visible within the body and proboscis of the Fycnogonum, and 

 that these attacks may prove fatal to young Actinians was observed in 

 my aquaria in the spring of 1907 at Newquay, in Cornwall, a young 

 Sagartia being speedily killed, and young Bunodadis thallia (Gosse) 

 were much injured. 



I have since seen it feeding upon Actinia equine, Linn., and young 

 M. dianthus in the Plymouth aquaria. 



EPIZOANTHUS INCRUSTATUS (Diib. and Kor.). 



Voyage XCIII. Station 34. East of Shields. 38 fathoms. Common. 

 Voyage XCIII. Station 37. Northumberland ground. 40 fathoms. 5 



specimens. 

 Voyage XCIII. Station 59. Lat. 55° 31' N., 0° 36' W. 47 fathoms. 

 Common, and a number of other stations in that area in 40 to 57 fathoms. 



The colonies varied greatly in size, number of polyps, etc. All 

 were incrusting forms, forming carcina3cia by replacement of the shells 

 of gastropod shells ; the carcintecia were inhabited by various species of 

 Eiipagurus. The smallest colony consisted of 4 polyps. The largest 

 obtained measured 42 mm. in length, and the polyps varied from 

 12 mm. in height and 7 mm. in breadth to 6 mm. by 4 mm. 



The number of polyps in a colony was usually 10, but as many as 30 

 were counted in one case, many of these being, of course, mere buds. 



The incrustations were extremely dense, the ectoderm and mesogloea 

 being permeated with sand, and there was usually a considerable 

 amount in the ccelenteron. Eepeated attempts to observe the polyps 

 expanded all failed, owing to the motion of the ship, the animals being 

 very timid. 



CERIANTHUS LLOYDII, Gosse. 



Voyage XCIII. Station 36. East of Shields. 38 fathoms. 2 specimens. 

 Voyage XCIII. Station 39. Northumberland ground. 34 fathoms. 1 



specimen. 

 Voyage XCIII. Station 70. Lat. 55° 39' N. Long. 1° 10' W. 50 fathoms. 



1 specimen. 

 Of these only the last was in a sufficiently good condition to be of 

 use, the others were badly injured by the trawl. 



