222 



I have not seen examples from Table Cape, but there cannot be 

 any doubt 'hat they are conspecific with the Muddy Creek types 

 of C. sublahiata. 



3. Crossea lauta, ■■^ptc. no v. 



Shell globosely turbinated, with a large tumid body-whorl and 

 very low broad conical spire. 



Whorls four, convex, smooth and shining. Body-whorl with a 

 narrow inf rasutural band and a few obsolete linear-sulcations at 

 the base. Aperture broadly oval ; outer lip stoutly variceally 

 thickened, sharply margined behind ; columella much arched ; 

 umbilical chink wide and deep, bordered by a stout, rather sharply 

 elevated, furnicular rib. 



Dimensions. — Length, 3 ; width, 3 ; height of aperture, 2 ; 

 width of aperture, 1*5. 



Locality. — Miocene. Muddy Creek ! 



C. lauta somewhat resembles in shape C. 2n-incej)s, but has a 

 variced outer lip ; in which latter character it agrees with 

 C. lahiata and C. sublahiata, but is readily distinguished from 

 them by its globose profile. 



Genus Scalaria. 



synopsis of species. 



I. Peristome entire ; no hasal rib. 



1. Shell costated, with or without varices ; aperture circular 



[Clathrus]. 

 No varices ; costse lamellar ; spirally lineate, 



1. S. interstriata. 



2. Shell variced; spirally linear-punctate-grooced ; peristome 



thick [Nodiscala]. 

 Whorls subangular ; costse thick, evanescent behind. 



2. S. basinodosa. 

 Whorls rounded. 



Suture crenate-dentate ; coarsely punctured. 



3. S. j^rionota. 

 Suture plain ; finely punctated. 4. *S'. Hatniltonensis. 



3. Shell lamellate-costated ; with or without varices ; umbilical 



chink margined by -a, funicular rib adherent to the pillar 

 [Crisposcala]. 

 Lamella? distant, pointed behind ; spirally lirate and 

 striate. 5. S. echinophora. 



II. Peristome entire ; base rvith a concentric rib. 



4. Shell lamellate-costated, with or without varices ; impunct- 



ate ; basal keel ending at inner angle of aperture adjac- 

 ent to the funicular rib [CirculoscalaJ. 



