tgog. Coi,GAN. — Dublin Marhie Biology. \-ji 



The numbers in the foregoing list indicate, for the univalves, 

 the perfect shells found in the material, for the bivalves, the 

 number of united or double valves. The predominant species 

 were Rissoa parva, R. striata^ R. scinistfiata, Ven7cs oval a, and 

 Asiarie triangularis^ single valves of the two last named being 

 innumerable. In addition to the mollusca, this abnormally 

 rich haul included one broken specimen of the well-known 

 coral, Caryophyllea Smithii^ and numerous specimens of another 

 coral, the minute Sphenoirochus Wrightii, two of my largest 

 specimens of the latter measuring exactly ^ inch. 



Malahidb Creek and River. 



May 30th. — The results obtained from the 1907 dredgings 

 on this ground encouraged the Committee to continue its 

 work here during 1908, and the first trip was made on this 

 day. Dredging in the river below the railway bridge gave 

 three interesting opisthobranchs, Elysia viridis^ one specimen 

 an inch long, Rimcina Hancocki, three specimens, and Lima- 

 pontia nigra^ one specimen. The occurrence of the two latter 

 species in 2 fathoms of water is worthy of note, as both species 

 are usually quite littoral. Mr. Gamble dredged Limapontiain 

 Valentia Harbour, from about the same or a somewhat greater 

 depth ; but it seems probable that both there and at Malahide 

 this species "was carried down b}^ strong currents from some 

 purely littoral habitat, so that its occurrence in these stations 

 is no more indicative of normal habitat than is the presence 

 of living alpine plants at low levels by mountain streams. 



June 17th. — A second half day at Malahide was spent 

 in dredging, partly in the Creek above the railwaj^ bridge 

 and partly in the River below it. In the Creek, one .speci- 

 men of Chiton ruber was taken along with three Runcinas 

 and numerous living specimens of Rissoa menibi^anacca ; in the 

 River, no less than 33 individuals of Doto coro7iata were found 

 on Hydralhnania, and on the common sponge, Halichondria 

 panicea^ one specimen each oi Eolis Drunimondi and E. atiran- 

 tiaca. The last-named Eolis is new to Dublin and to Kast 

 Ireland waters, the onl}' previous Irish records being for 

 Valentia Harbour and Ballinakill Harbour on the West. The 

 Malahide specimen was \ inch long, and showed bright red on 



