marine biological station at port erin. 23 



Dredging Expeditions. 

 On June 5th the whole day was spent in dredging and 

 tow-netting from the ''Mallard " (under the charge of 

 Captain Batchelor of the Salvage Association) to the West 

 and South of Port Erin, at the following localities : — 



1. Three miles West of Fleswick, 20 fms., 6 hauls of 

 the dredge ; good varied ground, old shells, &c. i^mongst 

 the species obtained were : — Halisarca dujardinii, Sitber- 

 ites domuncida, Glathria seriata, Aplijsilla (/) sulpliurea 

 {green), Sarcodictyon catenata, Sertiolarella tenella* 

 Diphasia pinaster * Gellaria fistulosa, Carinella linearis, 

 Pahnipes membranaceus, Porania pulvillus, Stichaster 

 roseus, Balanus porcatus, XantJio rividosa, Atelecyclus 

 septemdentatus, Crania anomala, Pandora incequivahis, 

 Pecten striatits. 



2. Fourteen miles West of Dalby, 60 fms., 2 hauls of 

 dredge ; bottom sticky blue clay-mud t : here were found, 

 Lagena hertwigiana,* Jaculella acuta, Hyperammina 

 arhorescens, Plumularia catha7'ina, Brissus lyrifer, Pan- 

 tlialis an'stedi,* (a representative of the rare family Acoetidae. 

 This addition to our local fauna has only been once before 

 taken in British Seas, by Dr. Gw5m Jeffreys, 35 miles off 

 the Skerries, Shetland, depth 75 fms. — as recorded by 

 Prof. M'Intosh), thirty species of Polyzoa \nc\\x^\i\gBeania 

 mirahilis. Cellar ia fistulosa, C. sinuosa, and Stomatopora 

 granulata.* 



3. Eight miles West of Fleswick, 33 fms., 3 hauls of 

 dredge ; here were, Sarcodictyon catenata, Aglaoplienia 

 myriopliyllitm,Dipliasia pinaster ,* Ecliinocyamus pusilliis, 



* New to the district. 



tXhe presence of this clay-mud in this deep depression of the Irish Sea 

 may possibly — if it can be regarded as a glacial deposit— be considered 

 confirmatory of the theory of glaciation of this neighbourhood held by the 

 Glacialists' Association, according to which tliere was a great movement of 

 ice through the North Channel, and downwards between Ireland and the Isle 

 of Man to St. George's Channel, and so out to sea. 



