182 LIVERPOOL MARINE BIOLOGY COMMITTEE REPORT. 



Tuhulifora lohulata, Hassall. * 



Extremely abundant off Maughold Head, Isle of Man 

 (Hincks). 



Ramsey Bay, on Mytilus (Lomas). 



Tuhulipora flabellaris, Fabricius. 



Tubipora Jlabellaris, Fabr. 



Tuhulipora phalangea, Couch, Johnst., Hincks, Busk. 



Colwyn Bay (Shrubsole). Not previously recorded in our 

 district. 



Genus Idmonea, Lamouroux. 



Syn. Tuhulipora, Lamk 



Tuhulipora, subgenus Idmonea, Smitt. 



Two British species. 



Idmonea serpens ^ Linn. 



Tuhij)ora serpens, Linn., &c. 

 Millepora tuhuhsa, EUis and Sol. 

 Tuhulipora serpens, Flem., Johnst., Busk, &c 



Generally distributed. Extremely abundant on the shore 

 at West Kirby, on Hydrallmania falcata (Lomas). The 

 specimens vrere collected from among the masses of sea weed 

 left by the tide at high water mark, and they differ con- 

 siderably from those forms which are found on shells and 

 stones, &c. This species affords a good example of the 

 changes which a form may undergo when placed under 

 varying influences. The same form also dredged in the 

 Welshman's Gut (seven fathoms), and Hilbre Swash, 

 "Merry Andrew" expedition (ten to eleven fathoms). Sea- 

 combe (Byerley). Colwyn Bay (Walker) ; Holyhead (Higgin). 



Genus Diastopora, Lamouroux. 



Syn. Tuhulipora (sp.) Johnst., &c. 

 Patinella (sp.) Busk, Hincks. 



Four British species. 



