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new species of Bibionidae [Plecia 3, Dilophiis 1, and Scatopse 2) are descri- 

 bed in this paper. In addition three old-recorded species, Bibio imitator^ 

 ^Valk. ; Plecia dimidiata, Macq. ; and Dilophus loncjirostris^ Macq., are re-de- 

 scribed; and it is pointed out thai JB . /uivipetiiiis, Macq. ; B. rußcoxis^ Macq. ; 

 and B. helioscops, Sch., are all identical with B. imitator, described by Wal- 

 ker in 1835, a species which appears to have a very wide distribution. Of 

 five other species of this genus described by Macquart, and one by Jaennicke, 

 recorded from Australia in Walker's "Notes", the descriptions are not acces- 

 sible to the author. — Mr. Brazier exhibited specimens of a land-shell, 

 Sululina ocfona, Chem., collected by Mr. E. L. Layard at Canala, east coast 

 of New Caledonia, in a coffee plantation. The species is peculiar to Cuba 

 and other West Indian Islands, but evidently it has been introduced into New 

 Caledonia at some recent date, though under what circumstances is at present 

 a mystery. — Mr. Sidney Olliff exhibited a series of earthen cocoons of 

 Cephalodesmius armiger, Westw., a beetle of the family Scarabaeidae, some 

 containing larvae or pupae, and others specimens of immature perfect insects. 

 The cocoons had been dug up in a garden at Parramatta at a depth of about 

 eight inches. — Mr. Macleay exhibited four specimens of a species of 

 Carp from the Wingecaribee River, and read the following explanatory note : 

 — "The fishes now exhibited were found in a waterhole close to the Winge- 

 caribee River at Elvo, Burradoo, during the last week, by Mr. W. R. Campbell. 

 The waterhole was so nearly dry that the little water remaining in it was as 

 thick as mud, and the fishes must have died very shortly if left in it. Mr. 

 Campbell, therefore, had the holes emptied, and the fishes (several hundred) 

 placed in the river in the immediate vicinity, with the exception of the four 

 specimens sent to me and now exhibited. I find them to be American 

 Cyprinidae of the genus Carpiodes, Rafinesque [Sclerognathus oiNdlenciennes)^ 

 a genus consisting of several species, all belonging to the freshwaters of the 

 United States. I have not been able to make out the exact species. It would 

 be interesting to know how and when the fish was introduced into this 

 country, where its acclimatization, as far as Wingecaribee is concerned, seems 

 to have been so perfectly successful." — Dr. Cox stated that he wished to 

 place on record the regularity with which the large green Cicada makes its 

 appearance each year in the neighbourhood of Sydney. For the last 17 years 

 he had noted the dates, which he found to range from October 14th to 30th. 

 — Mr. Fletcher read a letter from Hon. Dr. Creed, M.L.C. , to the Pre- 

 sident, calling the attention of the Society to the sudden appearance of 

 myriads of mice in various country districts of this colony, and suggesting 

 that the subject was one worthy of investigation, as, owing to the destruction 

 of crops and food for stock, the matter was becoming one of economic im- 

 portance. Mr. Fletcher pointed out that the subject was one which had not 

 been entirely overlooked, since in the Society's Proceedings for 1887, p. 447, 

 would be found a paper by Mr. K. H. Bennet, giving particulars of an invasion 

 of rats in the western portion of N. S. Wales during February, 1887. — 

 Mr. Fletcher exhibited some young specimens of Peripatus Leuckarti^ Sang., 

 the progeny of one of the three living specimens exhibited at the Society's 

 meeting in June last. The mother, for a period of four months, lived in a 

 tin with damp moss and decayed leaves, but died a few days ago after giving 

 birth to four young ones. These, when discovered (they were then a few days 

 old) last Wednesday, were about 7 mm long when extended, and nearly 



