409 



WEDNESDAY, APRIL 27th, 1881. 



The President, Dr. J. C. Cox, E.L.S., in the Chair. 



MEMBERS ELECTED. '. ^ » s>/ 



E. P>. Kingdon, Esq. ; Dr. Craig Dixson ; Dr. Thomas DixsoH 

 and Dr. Sehuette. 



DONATIONS. 



Journal of the Royal Microscopical Society, Vol. I., pai't 1, 

 series 2, from the Society. 



Results of Rain and River observations for 1880, Recent 

 changes in the surface of Jupiter, and Thunder and Hailstorms 

 in N. S. Wales, from H. C. Russell, E.RA.S. 



papers read. 



Description of a new species of Australian Amplexa. 



By Professor Ralph Tate, F.Gr.S., &c. 



Amplexa turrita, spec. nov. 



Shell somewhat fusiformly turreted, thin, covered with a pale 

 horn-coloured epidermis which is squamosely raised at the sutures 

 and on the longitudinal carinae. Whorls five and a half, with 

 distinct sutures ; body whorl carinated, obliquely flattened 

 posteriorly, and ornamented anteriorly with about five longi- 

 tudinal ridges; penultimate whorl subquadrate with two 

 prominent keels, one on the angle of the whorl, the other near 

 the anterior suture. External surface with transverse thick 

 strice of growth somewhat cancellated by the spiral ridges and 

 intermediate lines. Spire exserted, scalariform, acute. Aperture 

 ovate, subangulated posteriorly, about three-fifths of the length 

 1 A 



