•*'^P'- 1 Field Naturalists' Ch(h — Proceedings. 53 



EXHIBITS. 



By Mr. F. Cudmore. — Fragment of tusk of the American 

 Mastodon (Late Tertiary formation), from Alaska, North 

 America. 



By Mr. C. French, jun. — Ten species of scale insects from the 

 Mallee, Warburton, and Gembrook ; life-history of Glass-wing 

 l^utterfly, Acrcea andromacha, found breeding on passion fruit 

 plants at Mysia, Northern Victoria (first record for Victoria) ; 

 specimen of Chequered Swallow-tail Butterfly, Papilio sthenelus, 

 taken on Salvia plants near Melbourne last summer (a rare 

 butterfly in Victoria). 



By Rev. A. J. Malier. — Specimens of orchid, Pkrostylis nutans, 

 Nodding Grecnhood, from Wonthaggi. 



By Mr. H. B. Williamson. — Clock-case made of Sheoke, 

 Casuarina, sp., by Mr. G. A. WiUiamson. 



After the usual conversazione the meeting terminated. 



CoRRECTiox. — By an unfortunate slip the words " Craufurd " 

 and " Munro " were transposed in the title of the plate in the 

 August Naturalist. A corrected slip is forwarded herewith 

 for attachment to the plate. 



The Black Snail. — At the January meeting of the Club 

 {Vict. Nat., xxxvi., p. 134) a question was asked regarding the 

 nature of the food of the Black Snail, Paryphanta airamentaria. 

 In a paper by Miss Olive Davies, M.Sc, which appeared in 

 the Proceedings of the Royal Society of Victoria in 1913, an 

 account is given of the anatomy of this snail and of the allied 

 species, P. compacta, both of which are said to be carnivorous. 

 Miss Davies says : — " The radula is large, as is usual in the 

 carnivorous land mollusca." This radula, or lingual ribbon, 

 measured in the specimen examined by Miss Davies about 

 20 X 5 mm., which is about five times the area of that of an 

 ordinary slug or snail of equal size. Miss Davies found in the 

 radula about 98 rows, each containing approximately 118 

 teeth. A specimen of similar size recently examined bore 

 about 108 rows, each containing on an average over 150 teeth. 

 The teeth are sharp spines, with an inferior enlargement to 

 strengthen their adhesion to the radula, and are curved — 

 those near the middle slightly, but the marginal ones much 

 more so, as well as being shorter. The radula strikingly 

 resembles that of Testacella, a European slug bearing a 

 rudimentary shell, and which is said to live on earthworms. 

 The disposition of the teeth, and their form, are almost identical, 

 except that in Testacella the points are barbed. The; oceanic 

 snail, lanthina, which feeds on Acaleph.'e, is said to have a 

 radula of similar character,— W, M. Bam:. Kew, jotli Ma^•, 

 1920. 



