♦PIsldium obtusale, C. Pfr. 



*P. nltidum, Jenyus. 



*P, grass i ess I an um, Dupiiy. ■{ 



*P, pusillum, Gmel. 



♦P. personatum, Maleu. 



n8 The hish Naturalist, June, 



♦Planortols splrorbis, L.— Abundant in the lakes, and all var. Uu. 



cos to ma . 



^ Both occurred in a little brackish lake 



Hydrob.a ventrosa, Mont.) ,,ear Kilronan, the habitat recorded 



H. Jenklnsi, Smith. ( ^y Mr. Stelfox. 



'This genus is well represented on the 

 island, and occurred in all the 

 freshwater lakes. I did not keep 

 the gatherings from each locality 

 separate, but all were submitted to 

 Mr. B. B. Woodward, of the British 

 Museum, who kindly examined and 

 found these five species among 

 them. P. viiluim, Held. { = P. gas- 

 siessjamwi, Dupuy) has been re- 

 corded also by Mr. R. Standen in the 



jfournal of Conchology, 1896, page 180. 

 Cork. 



IRISH SOCIETIES. 



EOYAL ZOOLOGICAL SOCIETY. 



Recent gifts include a large Rhesus Monkey from Mrs. Topping, two 

 young Ring-tailed Capuchins from Mr. R. Casement, C M.G. ; a Ring- 

 tailed Lemur from the Marchioness of Waterford, two Hedgehogs from 

 Mr. W. R. Dalton, a Cane Rat from Captain Corsallis, a Collared Peccary 

 from Mr. J. B. Leudrum, a Kestrel from Mr. S. J. Rawson, a Barn Owl 

 from Miss E. Fitchener, a Grass Parrakeet from Colonel J. G. Adamsou, 

 a Ring-Ouzel from Mr. R. M. Barrington, eleven Lesser Red-polls from 

 Mr. W. W. Despard, and a Curlew from Dr. G. B. Crawford. 



Many animals have been acquired by purchase or exchange, the most 

 noteworthy being a young male Chimpanzee, three Barbary Apes, a 

 Pine-Marten, a Reindeer, a pair of Golden Eagles, and two pairs of 

 Alpine Choughs. 



The male Chimpanzee, who replaces the lamented "Barney," is an 

 exceptionally handsocie specimen rejoicing in the name of " Mr. James." 

 Neither Barbar\' Apes, Peccarries, nor Reindeer have been on view in the 

 Gardens for several years past, so that the new arrivals will doubtless 

 prove a great attraction to visitors. 



BELFAST NATURALISTS' FIELD CLUB. 



March 2.— Zoologicat^ Section. — R. Welch, M.R.I.A., read a 

 paper on " Variation due to Environment, illustrated mainly by the 

 Mollusca." Mr. Wei<ch, introducing this subject for discussion, first 

 referred to the special susceptibility of plants to variation due to their 

 environment, giving examples of very marked cases due to differences 

 in soil. He exhibited specimens of Pyrola, Sisymbrium, Orchis, &c., 

 from Mr, N. Carrothers' herbarium. Passing to the Mollusca, he gave 

 instances of restricted areas where white-shelled forms of species, usually 

 found with dark shells, are common. Altitude seems at times to affect 

 the size and colour of shells very much, and specimens were exhibited 

 to illustrate these points. The question of variation in size, texture, 



