of South Devon and South Cornwall. 255 



shells. At Exmouth it occurs on the sides of rocks near low- 

 water-mark, but of small size, simply pinnate and plumose. In 

 such situations it does not seem to attain its full growth ; at 

 least I do not recollect to have met with any perfectly-developed 

 specimens between tide-marks. 



16. S. cupressina, Linn. 



Not very common : Brixham trawl-boats ; dredged in Sal- 

 combe Bay, rare. 



[Filey, Yorkshire ; exti'emely abundant and of great size.] 

 Dr. Johnston speaks of this species, on the authority of Mr. 

 Peach, as " plentiful in Devon." I certainly have not found it 

 so. Amongst the produce of the trawl it occurs but sparingly 

 as compared with its congeners argentea and abietina. 



8. Thuiaria, Fleming. 

 1. T. thuia, Linn. 



Devon (Turton fy Kingston) . 



This species is included in the ' Natural History of Torquay, 

 Dawlish, and Teignmouth/ by the above authors. I have never 

 seen a Devonshire specimen, and Mr. Couch speaks of it as 

 "very rare" on the coast of Cornwall. I presume therefore that 

 it must be of very uncommon occurrence in the west, as its pe- 

 culiar form would readily attract attention. 



[Exceedingly abundant on the coast of Yorkshire. It is a 

 prevalent northern form, and ranges to the North Cape.] 



2. T. articulata, Pallas. 



Not uncommon : Torbay, Exmouth, on Pinna from 60 fathoms 

 off the Deadman. 

 [Filey, Yorkshire.] 



4. Antennularia, Lamarck. 



1. A. antennina, Linn. 

 Very common. Coralline zone. 



2. A. ramosa, Lamx. 

 Common : off the Deadman, in 60 fathoms, &c. 



5. Plumularia, Lamarck. 

 1. P. falcata, Linn. 

 Very abundant in the Coralline zone. 



2. P. cr is tat a, Lamk. 



Very common on rocks between tide-marks, of small size ; 



