500 



NOTES AND EXHIBITS. 



Mr. Henn exhibited a collection of 43 species of Mollusca of 

 the Family Rissoiidre, collected by himself in Port Jackson. The 

 following, which are found also in Tasmania, are now for the first 

 time recorded from Port Jackson : — Rissolna elongaf.a, Petterd; 

 E. liadla, Petterd; R. spirata, Sowerby; R elagaatida, Angas; 

 Rissoia cijcl.ojtoui'i, Ten.-Woods; A*. Maccoyi, Ten. -Woods; R. 

 Fetterdi, Brazier [—pulcheUa, Petterd). No less than sixteen 

 species are apparently new; and Mr. Henn promised a paper 

 dealing with them at a future date, after he had compared them 

 with the RissoiidiB of the neighbouring colonies. He also 

 exhibited specimens of S'y^ifer Lodderce, Petterd, and Haininea 

 cyinbaluni, Q. and G., found by Mrs. Henn at Long Bay in 

 October, 1893; T itrhonilla, erubesoe^is, Tate; Crosseia lablata, Ten.- 

 Woods; and Zfiidora Tasmanica, Ten.-Woods, found by himself 

 in shell sand at Middle Harbour, all previously unrecorded from 

 New South Wales. 



Mr. Edgar R. Waite contributed the following note on 

 The Ra7ige of the Platypus. 



Mr. Oldfield Thomas (Brit. Mus. Cat. of Marsupialia, p. 390) gives 

 the northern range of the Platypus {Ornithnrhi/nchu.i ana/inns) 

 as "southwai'ds of 18° S. lat.," and quite recently Prof. W. 

 Baldwin Spencer (Horn Expedition Report. Summary, p. 179) 

 writes of the "absence of Platypus in the north-east," and 

 evidences this as assisting the conclusion that the primitive 

 Monotreme fauna entered Australia from the south. 



While agreeing with Prof Spencer's inferences, it will be useful 

 to point out that the northern range of the Platypus is more 

 extensive than has hitherto been believed. 



Some little time ago, on this question being raised, a letter was 

 addressed to one of the Australian weekly newspapers (" The 

 Bulletin "), and several replies were received. While some of the 



