Zoulofjicul ^ocietij. , 211 



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

 by Professor Balfour. 



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

 Lawson. 



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

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

 of subtropical Australia. 



ZOOLOGICAL SOCIETY. 



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



On SxOASTOMlDiE AS A FaMILY, AND ON SeVEN 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 globose- conic. 



Lindsleya Lindsleyana, Chitty. See Stoastoma Lindsley- 

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



Hab. Manchester back-woods. 



Lindsleya Pickeringiana, Chitty. 



Hab. ?, ? Manchester, ? Yallahs Hill. 



Form, globose-conic. Colour, very pale horn. Sculpture, 17 

 strong blunted rounded spiral carinse, within each interspace one or 

 rarely two very fine carinse : 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 curvihnear in its plane, very slightly produced above, 

 pectinated strongly by the strong carinse. Labium, moderately de- 

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

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

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

 sinking immediately into the umbilicus. Operculum, moderately 

 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 shghtly over the labium. 



Height 0-086, greatest breadth 0-14, least 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 apex much sharper. 



14* 



