234 



Atmulose and Hayed Animals 



little pools in the cavities of rocks. — Sabellaria Lam. ( Am- 

 phitrite Cuv.) alveolata Lin. On various parts of the shore 

 of Belfast Lough. — S. crassissima Penn. — Pectinaria Lam* 

 (Amphitrite Cuv.) belgica Gm. — Dentalium Lin. entalis 

 Lin. Found on the sandy shores : rare. — - D. dentalis Lin. 

 — D. labiatum Brown. — Brocus Brown. 



DORSIBRANCHIA. 



Arenicola Lam. marina Lin. Inhabits all the sandy shores. — 

 Nereis Cuv. pelagica Gm. Common under stones on the 

 sea shore, in the black mud.« — Spio Fab. calcarea (^£.27.), 



27 



S. filicornis Fab J Body elongate, jointed, on each side series 

 of fasciculi ; tentacula rather incrassate, nearly one half as 

 long as the body ; eyes not apparent. Found in the pools 

 on the rocks at Whitehead, Belfast Lough, living in minute 

 tubular cavities in the limestone rocks, the tentacula alone 

 projecting, and kept by the animal in constant motion. 

 Stones every where on our shores are met with perforated 

 by these minute animals, a represents a portion of limestone 

 rock, and the animals and tubes of the natural size ; b 9 the 

 portion of limestone rock enlarged, to show the tubes formed 

 by the animal ; c, the animal enlarged. — Cirrhatula Lam. 

 tentaculata Mont. — Aphrodite Lin. aculeata Lin. — Ha- 

 lithae v a Sav. clava Mont. — Polyno^ Sav. squamata Pall. 

 Found among Carrickfergus oysters. 



abra'nchia. 

 I. Z/umbricus Lin. 9 Cuv.* terrestris Lin. Common. — //.annu- 

 laris. Of a bright red, with the body, below the sexual organs, 

 with the rings alternately red and yellow. This species, 

 known by the name brandling, is much esteemed by anglers 



* M. Savigny and M. Dugks have described many species of this genus. 

 I have not been able to get at their memoir, so that 1 have attached trivial 

 names, merely to distinguish those T am acquainted with, until an oppor- 

 tunity occurs for comparing them with the French species. — R. T. 



