Zuulogicul Sucictij. 211 



and Serial Crystalline Forms," by Mr. Wm. Mitchell. Connminirated 

 by Professor lialfuiir. 



4. "Ou Macadamia, a genus of Proteacese," by Dr. George 

 Lawson. 



The genus referred to is Macadamia (Midler), described in the 

 'Trans, of the Pliilos. Inst, of Victoria,' vol. ii. p. 72. It is a native 

 of subtropical Australia. 



ZOOLOGIC.VL SOCIETY. 



July 14, 1857.— Dr. Gray, F.R.S., V.P., in the Chair. 



On Stoastomid.e as a Family, and on Seyen proposed 

 New Genera, Sixty-one New Species, and Two New 

 Varieties from Jamaica. By the Hon. Edward Chitty. 



[Concluded from page 150.] 



Genus VII. Lindsleya. 



Shell glohose-conir. 



Lindsleya Lindsleyana, Chitty. See Stoastoma Lindsley- 

 anum, Adams. Mon. Stoast. Ad. 1849, p. 12; Cat. Phan. p. 229. 



Half. Manchester back-woods. 



Lindsleya Pickeringiana, Chitty. 



Hab. ?, ? Manchester, ? Yallahs Hill. 



Form, globose-conic. Colour, very pale horn. Scidjiture, 1/ 

 strong blunted rounded spiral carinse, within each interspace one or 

 rarely two very fine carinfe : on the upper whorls 5, with a fine one 

 in each interspace. Spire, well elevated, with straight outlines. 

 Apex, rather sharp. Whorls, .5, well rounded, with a deep suture. 

 Aperture, almost exactly semicircular, rather depressed below. La- 

 brum, rather curvilinear in its plane, very slightlv produced above, 

 pectinated stronglv by the strong carina?. Ltihhun, moderatelv de- 

 tached from body-whorl, very slightly curved to the right below ; on 

 a plane with the labrum above, slightly lower below. UmbUicus, 

 moderately deep and broad. Labral lamella, produced broadlv, but 

 sinking immediatelv into the umbilicus. Operculum, moderatelv 

 concave, with a rather broad margin, with, on the labral side, 5 or 6 

 raised lamellae converging towards the umbilicus, the labral side close 

 to its lower extremity bending to the right like the labium, and at 

 its very extremity furnished with a fine linguiform projection which 

 spreads slightly over the labium. 



Height 0-086, greatest breadth 0-14, lea.st breadth 0-086. 



Named in compliment to John Pickering, Esq., a collector of 

 British shells. 



This shell in many respects resembles L. Lindsleyana, but is much 

 larger, and its proportions under measurement are very dissimilar ; 

 its aperture is wider, and a])ex much sharper. 



14* 



