APPENDIX. 223 



irritated. Although my specimens often assumed the 

 form represented fig. 3, Mr. Lloyd informs me that 

 it must have arisen from unhealthiness of condition, 

 its usual habit being to contract into a more flattened 

 form. Wlien fully expanded, its transparent and 

 lengthened tentacles present a beautiful appearance. 

 Fig. 3 a, showing a basal disk, is given for the 

 purpose already described. 



BALANOPHYLLiEA EEGIA. PI V. Jig. 1. 



Another species of British madrepore, found by 

 Mr. Gosse at Ilfracombe, and by Mr. Kingsley at 

 Lundy Island. It is smaller than C. Smithii, of a 

 very bright colour, and always covers the upper part 

 of its bony skeleton, in which the plates are dif- 

 ferently arranged from those of the smaller species. 

 Fig. 1 shows the tentacles expanded in an unusual 

 degree ; 1 a, animal contracted ; I h, the coral ; 1 c, 

 a tentacle enlarged. 



