1908. COI.GAN. — Dublin Marine Biological Co?nmitiee. 109 



Emargiuula fissura, 5. 

 Fissurella grseca, 5. 

 Trochus Montacuti, 32, many 



living. 

 Rissoa proxima, i. 

 Adeorbis subcarinatus, 2. 

 Defrancia linearis, 9. 

 Pleurotoma rufa, r. 

 Utriculus truncatulus, 3. 

 Cylichna cylindracea, 3. 

 Dentalium entails, 2. 



Leda miuuta, 2 living, 

 Astarte triangularis, 13 living. 

 Venus ovata, 27 

 Cardium fasciatum, 2 

 C. nodosum, 6 

 Psammobia tellinella, 3 „ 

 Pecten tigrinus, 4 valves. 

 Tellina crassa, 4 ,, 

 T. donacina, 8 ,, 



Thracia papyracea, 10 valves. 



»» 



»» 



Another scrape in 15 fathoms about a quarter of a mile S.E. 

 of Dalkey Island gave 43 species, the most interesting of these 

 being — 



Trochus Montacuti. 37. 

 Rissoa costata, i. 

 R. semistriata, 6. 

 R. punctura, 6. 

 R. reticulata, 2. 

 Velutina laevigata, 2 living. 

 Troplion muricatus, 8. 

 Odostomia spiralis, 2. 



Cerithium perversum, 2. 

 Eulima distorta, i. 

 Leda minuta, 2 living, 7 valves. 

 Cardium fasciatum, 15 living, 1 1 valves 

 C. nodosum, 5 „ 18 „ 



Psammobia tellinella, 4 „ 11 

 Lima Loscombi, i valve. 

 Thracia distorta, i 



)> 



}> 



The dredgings made in Killiney Bay from the Sound to near 

 Shanganagh river yielded no species of interest. 



August 24. — Messrs. Butler, Colgan, and Hinch spent a 

 half day in dredging at Malahide, chiefly in the shallow water 

 of the River, as the channel is called by which the great creek 

 or lagoon of Malahide is filled and emptied by each flow and 

 ebb of the tide. A few scrapes were made in the open sea 

 outside of the bar, but the sandy ground gave us no results of 

 interest. In the river itself, however, we were more success- 

 ful. This is the locus classicus of two nudibranch species, 

 Proctonotns rnncroniferus and ^olis Farrani^ discovered here 

 more than 50 years ago by Messrs. Alder and Hancock in 

 company with Dr. Farran. The whole of the river from the 

 bar to the railway bridge was dredged by us rather thoroughly, 

 partly by rowing and partly by towing the boat and dredge 

 from the sandy banks of the channel. The best reach of the 

 river was found to lie above the wooden landing stage of the 

 Island ferry in low water soundings of not more than two 

 fathoms. 



