576 NOTES AND EXHIBITS. 



Mr. Hedley exhibited, on behalf of Mr. Whitelegge, and read 

 the following note on specimens of a species of Glaucus frequently 

 washed ashore on the coast : — "A species of GlaiLcus is frequently 

 washed ashore on the coast of N.S.W., the determination of which 

 puzzled myself and my scientific friends. The Monograph of this 

 genus in the Challenger Reports quotes several species whose 

 illustrations and descriptions occur in works of which no copies 

 exist, so far as I am aware, in Australia. On being favoured by 

 Mr. Whitelegge with some fine specimens collected by him at 

 Maroubra Bay, near Sydney, I referred them to Prof. Dr. R, 

 Bergh, of Copenhagen, the highest authority on this and other 

 orders of nudibranchiate mollusca. Dr. Bergh replied to my 

 enquiries with his usual kindness and courtesy, and as such 

 information may be of equal service to my fellow students, the 

 following extract from his letter is here given: — 'I have examined 

 the Glauci you sent. According to the anatomy the animal is 

 absolutely the circum-equatorial Gl. atlanticus, Forster. The 

 drawing you sent seems to represent the varieties of the species 

 which I formerly described as Gl. lineatus, gracilis, and longi- 

 cirrhus (Anatom. Bidr. til. Kundsk. om iEolidierne, Danske 

 Vidensk. Selsk. Skrif. R. 5. Naturvidensk. og Mathemat. Afdel. 

 vii. 1864, pp. 285-295, Tab. vm. a, viii. b) ; they represent 

 certainly merely varieties. The Gl. lineatus seems moreover to 

 be the Gl. Peronii, Less., and the Gl. Jlagellum, Blumenbach ; 

 whilst the Gl. longicirrhus very likely is identical with the Gl. 

 pacificus of Eschscholtz.' " 



Mr. Deane exhibited a few specimens of Eucalypt timbers with 

 a view of showing that their characters are not without value as 

 an aid in the determination of species. After referring to Dr. 

 Woolls' recent paper in the last number of the Proceedings, Mr. 

 Deane pointed out that in his opinion more than one recognised 

 species would yet have to be subdivided as had already been found 

 desirable in the cases of E. leucoxylon, E. paniculata, and others ; 

 a belief which he thought was certainly well grounded in the case 

 of one of the species illustrated by the specimens on the table. 



