THE HYDROID FAUNA OF THE WEST OF SCOTLAND 159 



Typical Specimens from Loch 



specimens. 1 Lome, 3O-iiofms. 



Stem, length . . . . .0.15 mm. up to 0.70 mm. 



Stem, diameter . . 0.051-0.063 mm. -54 mm. 



Hydrotheca, length of primary 



hydrotheca .... 0.31 mm. 0.33-0.49 mm. 



Hydrotheca, total length includ- 

 ing additional margins . . 0.42 mm. 0.56-0.66 mm. 



Hydrotheca, diameter . . 0.11-0.13 mm. 0.10-0.13 mm. 



Gonangium stalk, length . ? 0.17 mm. 



Gonangium, length of body . 0.28-0.38 mm. 



Gonangium, greatest diameter . ? 0.17 mm. 



CLYDE SEA AREA. KYLES OF BUTE off Tighnabruaich, on 

 Thuiaria tenera. BARRIER PLATEAU Sound of Sanda, 22 

 fms., on Campanularia vertirillata ; between Sanda Is. and 

 Ailsa Craig, 24 fms., on Tint i aria lonchitis, Diphasia attentuata, 

 and Hydrallmania falcata. 



MULL OF CANTYRE, 50 fms., on Haleciitm muricatum ; 64 fms., 

 on Antennularia ramosa and Abictinaria filicula. 



SOUND OF JURA, 17-25 fms., on Campanularia verticillata. 



SOUND OF MULL, 68 fms., off Duart Castle; 70 fms., on Abictinaria 

 abietina. 



FIRTH OF LORNE, 10-30 fms., c. on Diphasia pinaster ; 30-110 fms., 

 on' Aglaophenia titbulifera 70-80 fms., on Diphasia pinaster 

 and Thuiaria cupressina; 60-70 fms., on Eudendrium lapilla re 

 and Diphasia alata. 



40. OPERCULARELLA LACERTA (Johnston). 



CLYDE SEA AREA. BARRIER PLATEAU Sound of Sanda, 22 fms., 



on Campanularia verticillata. 

 LOCH ETIVE, 70 fms., r. on Hydrallmania falcata. 



41. CAMPANULINA REPENS, Allman. 

 FIRTH OF LORNE, 60-70 fms. (M.). 



42. CUSPIDELLA GRANDIS, Hincks. 



FIRTH OF LORNE, 30-110 fms., on Aglaophenia tubitlifera. 



43. CUSPIDELLA HUMILIS, Hincks. 



FIRTH OF LORNE, 30-110 fms., on Aglaophenia tubulifera; 50-70 

 fms., a solitary hydrotheca on Bougainvillia ramosa (?). 



1 From north of Cape Wrath, 125 metres. 



