I' L A C U N A. 



I'LATK V. 



Spocies .'). (Mils. Hrit.) This slu'll lias the same tbrin iioniiiilly n^ F lacuna 



[■i.A.TNA L,N,oi.NL I'la. testa cra,siu,culd. opurd, 1 /''«'■«"«"• 1* is of a more solid and opaque texture, 



.„l,orhicu/<,ri, alhoUl. rom,,la,u,td, uUus purpureo- ='"'^ "'"^ lani.nitbrm teeth diverge as widely as they do 



aun;,.,>a nrhulat.i, iridrs.mti ; .Imtihus Md,- '" "'^' ''''"'"'"' ■"""■ 



ieqitalihc.-i, eloni/iitis, nctii. /dtissinu': (Itixnjentilms. 

 Lincoln's I'lacisa. Shell rarher thick, opaque, sut>- 



orbicular, whitish, tiatteiied, mottled with purple l--^, . ; 



and gold and iridescent within ; teeth nearly : 



equal, elongated, straight, widely divergent. Ivepreseiits a variety of Fhtruaii hitiatu nobk, beau- 



GltAV. Proc. Zooi. Soc, IS-lN. tifully mottled inside with t.-rtnise-sliell loh.uriiig. 



Ihih. Australia. 



