468 Rayed Animals found in Ireland. 



Antennularia Lam. 



indivisa Lam., Sert. antennina Linn. On the shore of 

 Dublin Bay. 



ramosa Lam. Found on the shore of Belfast Lough. 

 Sertularia Linn., Cuv. 



abietina Linn. Found on the coast. 



polyzonias Linn. On the shore of Belfast Lough. 



argentea Linn. On the coast. 



cupressina Linn. On the shore of Magilligan Strand, 

 county Derry. 



operculata Linn. Common on the shores. 



rosacea Linn. Shore of Belfast Lough. 



pumila Linn. Common on .Fucus serratus. 



pinnata. Greater and lesser branches alternately pin- 

 nated; denticles alternate, elliptical, with emarginate 

 mouths ; vesicles ovate, with a denticulate mouth and 

 transverse undulated striae. Dredged up, with other 

 marine productions, in the sound of Donaghadee. 

 Received from Mr. J. Gilles; Aug. 1805. The branch- 

 ing of this species is somewhat peculiar, each of the 

 primary and secondary branches springing out at an 

 angle of 40° or 50°. That part of the stem which bears 

 the denticles is waved so as to bear each denticle on 

 the projecting part ; the denticles are elliptic, and 

 the mouth of each apparently a little hollowed inwards, 

 perhaps arising from the extremity being fractured ; 

 the vesicles are ovate, with 4 or 5 blunt teeth sur- 

 rounding the mouth, and divided into 6 or 8 portions 

 by annulated undulating lines. It might be classed 

 among the large and strong sertularias, the principle 

 shoot being of the thickness of a sparrow's quill at its 

 base, and 4 in. or 5 in. long. The branches shoot forth 

 from opposite sides, the whole coralline thus assuming 

 a flat form, to the extent of 4 in. or 5 in. # 

 Thoea Lamour. 



Mecina Linn. Found on the shore of Belfast Lough. 



cellulo x si. 

 Crisis Lamour. 



eburnea Linn. Found on .Fucus serratus. 



ciliata Linn. Found on Fucus siliquosus, and on other 



corallines, 

 fastigiata Linn. Common on the coast, 

 flvicularia Linn. 



* Certainly not Dynamena pinnata (Sertularia pinnata Auclorum) of 

 Fleming. Perhaps the S. nigra of Pallas. — G. J. 



