72 



On a stone taken up by a fisherman's book from deep 

 water. It seerns to he unknown, and I have therefore 

 given it the name as above. 



The Serpulacese appear to be of rapid growth, and at first 

 to be destitute of a shell. I have seen specimens of an 

 Heteroclite species, probably Spirorbis Heteroclita, with 

 the newly formed shell, though of full size, so transparent, 

 that the fine vessels and fibrils of the animal might be ex- 

 amined through its substance. 



BALANUS RUGOSUS. Mont. Test. Brit., vol. 1, p. 8. 

 Scarcely uncommon, though local. 



A question of doubt (?) should be added to Tubicinella 

 Clavata 



ANATIFERA FASCICULARIS. After a storm in 

 October, 1841, I found on the beach a small empty phial 

 bottle, with this barnacle attached to its neck ; and Mr. 

 Peach informes me that numerous feathers of a bird were 

 at the same time washed on shore, having attached to 

 them, specimens of A. Fascicularis and A. Sulcata : proofs 

 of the fact that these rare species are capable of attaching 

 themselves to substances which have never been deeply 

 immersed. The first named of these species though com- 

 monly appearing almost sessile, is capable of elongating 

 its pedicle to about the length of the shell, and of moving 

 it in various directions. 

 A. ANSERIFERA. Mr. Peach found this species at- 

 tached to a stem of sea-weed, contrary to its usual habit. 

 ARCA RHOMBEA. Cornish Fauna, Shells, p 31. This 

 seems to be A. Tetragona of Mr. Forbes, Fauna Mo- 

 nensis, p. 41, and pi. 3, where it is represented as covered 

 thickly with hairs. The operculum is also stated not to 

 be a constant character. 

 HELIX SERICEA. Gray's Turton, p. 153, pi. 11, fig. 134. 

 Local, but scarcely uncommon. I have found several 

 specimens in an undisturbed part of my garden. 

 SIGARETUS TENTACULATUS? a single specimen 

 from Gorran. 



Among the Radiate Animals the Cornish Fauna reports 

 21 species of Echinodermata ; but the list will require some 

 correction, and must then lie left with the omission of a few 

 unascertained species of Holothuriadse. The species to be 

 added are : 

 ECHINUS MILIARIS. Forbes' History of Starfishes, 



p. 1G1. Common. 

 SPATANGUS PURPUREUS. Forbes, p. 182. Not 



uncommon. 

 LUIDIA FRAGILISSIMA. Forbes, p. 135. From deep 

 water, scarcely common. 



