198 TEANSACTTONS LIVEEPOOL BIOLOGICAL SOCIETY. 



Ceramium rubrum, C. Ag. (1, 2) 

 C. tenuissimum, J. Ag. (1) 

 C. circinatum, J. Ag. (1) 

 C. ciliatum, Ducluz. (1) 

 Polyides rotundus, Grev. (1) 

 Melobesia farinosa, Lamx. (1) 

 CoraUina officinalis, Linn. (1) 



SPONGES.* 



Calcaeea — Ascetta coriacea, Fl., var. osculata, and 



Sycandra ciliata, FL, on rock, off Arran Ids. 

 Monaxonida — Halichondria caruncula, B., off Arran Ids. 



Beniera {densa, B.?) do. 



Esperella sordida, B., rock, off Arran Ids. 



Desmacidon fucorum, J., off Arran Ids. 



Suberites ficus, E., Killybegs, 5 — 15 fms. 



Suberites domiuicula, N., Killary, 10 fms., 

 incrusting shells inhabited by Paguri. 



Iophon hyndmani, B., rock, off Arran Ids. 

 Ceeatosa — Aplysilla rubra, Hn., do. 



CCELENTEBATA. 



Hydeoida. 



Hydractinia echinata, Flem., abundant. 

 Bougainvillea (?) 

 Glytia johnstoni, Aid. 

 Obelia flabellata, Hincks. 

 Obelia geniculata, Linn. 

 Campanidaria neglecta, Aid. 



* Dr. Hanitsch has written some further notes about some of these 

 species of Sponges Avhich will be found as an Appendix at the end of this 

 paper (p. 213). 



