462 



South American V. chüensis^ but also because unanswerable arguments are 

 brought forward to establish the validity of Gray's genus Velasia^ which is 

 in consequence reinstated. Mr. Ogilby reviews Castelnau's account of the 

 Victorian Lampreys, and shows that author's Geotria australis was an adult 

 Velasia ; that his Neomordacia Howittii was founded on an individual of the 

 same species which had but just completed its metamorphosis, and finally 

 that his Yarra singularis is probably described from an ammocoete of the 

 same; and he points out that if he is right in his deductions the Australasian 

 species must take the name of Velasia singularis, — Mr. Henn exhibited 

 a collection of 43 species of Mollusca of the Family Rissoiiclae, collected by 

 himself in Port Jackson. The following, which are found also in Tasmania, 

 are now for the first time recorded from Port Jackson: — Rissoina elongata, 

 Petterd; R. Badia, Petterd; R. spirata, Sowerby; R. elegantula, Angas; Ris- 

 soia cyclostomuj Ten. -Woods ; R. Maccoyi^ Ten.-Woods \ R. Petterdi^ Brazier 

 [:= pulchella, 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 Rissoiidae of the neighbouring colonies. He 

 also exhibited specimens of Stylifer Lodderae, Petterd, and Haminea cymba- 

 lum, Q. and G., found by Mrs. Henn at Long Bay in October, 1893; Turbo- 

 nilla erubescens, Tate; Crosseia labiata, Ten.-Woods; and Zeidora iasmanica, 

 Ten.-Woods, found by himself in shell sand at Middle Harbour, all previ- 

 ously unrecorded from New South Wales. — Mr. Edgar R. Waite contri- 

 buted a note on the range of the Platypus. The northern habitat is exten- 

 ded to 16° 45' S. and localities quoted on the Gulf of Carpentaria 140° 56' 

 E., the most north-westerly point hitherto recorded. — Mr. Froggatt ex- 

 hibited an Arachnid from the New Hebrides, belonging to the genus T/iely- 

 phonus (Fam. Phrynidae) ; and a very fine specimen of the Bag-shelter of a 

 moth (genus Teara) from Quirindi, N.S.W. Also, on behalf of Mr. Lyell, 

 of Gisborne, Victoria, who was present, specimens of the rare butterfly lal- 

 menus myrsilus. Doubl., bred by Mr. Lyell. Also, for Mr. Maiden, a bunch 

 of curious horn-like galls (Fam. Cynipidae) upon the twig of a Eucalypt. — 

 Mr. T. Whitelegge exhibited a rare and curious Isopod, Amphoroidea 

 australiensis, originally described from N.S. Wales by Dana in 1852, since 

 when it appears to have escaped notice. The specimen exhibited was obtai- 

 ned on seaweed at Maroubra Bay last June; when alive it was bright olive- 

 green, and of a similar tint to the seaweed to which it was adhering. — Mr. 

 Ogilby contributed a note pointing out that there are two genera of recent 

 rough-backed Herrings in our waters, both of them generically distinct from 

 Diplomystus, which may be briefly characterised as follows: — 



a. Maxillaries narrow, Z^j^ to 4 in the diameter of the eye. Jaws, pa- 

 latines, and tongue toothed. Eight branchiostegals. Dorsal inserted well in 

 front of the middle of the body; anal moderate, its base as long as its distance 

 from the caudal ; ventrals inserted beneath the anterior third of the dorsal. 

 Scales with smooth posterior border. Potamalosa. 



Fresh-water Herrings, represented by a single species, the "Australian 

 Shad", Potamalosa novae-hollandiae (Cuvier and Valenciennes), Ogilby. 



a . Maxillaries broad, 2Y3 to 2Y2 ^^ the diameter of the eye. Teeth 

 entirely absent. Four branchiostegals. Dorsal inserted behind the middle of the 

 body; anal rather long, its base much more than its distance from the caudal ; 

 ventrals inserted in advance of the dorsal. Scales pectinated. Hyperlophus. 



