206 



The spire is more or less concealed. The outer lip is broadly 

 reflected, prominently margined, and is furnished with 20 

 prominent teeth ; the inner lip has 18 narrow elongate teeth. 



Dimensions. — Length, 17*5; width, 11; greatest height, 9, at 

 7 mm. from the posterior end. 



Localities. — Miocene ; Muddy Creek. Older Pliocene ; Dry 

 Creek-bore, near Adelaide. 



The species-name is a public acknowledgment of the valuable 

 aid rendered to geologic science in South Australia, more par- 

 ticularly in reference to Tertiary Geology, by Mr. W. J. Jones, 

 Conservator for AVater. 



7. Cypraea eontusa, McCoy. 



Reference. — C. (Luponia) eontusa, Pal. Vict., Decade Y., tab. 

 49, tigs. 3-3c, 4-4a (1877). 



Shell globular ; spire slightly projecting, consisting of three 

 slightly convex whorls, the apex obtuse and prominent ; anterior 

 canal very short. Surface irregularly reticulated witli small 

 contusions or irregular polygonal bruise-like depressions. 



Dimensio7is. — Length, 30 ; proportional width, y^y% ; height, 



7 

 100* 



Localities. — Eocene. Muddy Creek ! ; Schnapper Point ! ; 

 (McCoy); River Murray Clifis, rather common, but usually 

 dwarfed ! 



8. Cypraea subpyrulata, n^ec. nov. 



Shell cylindroid or narrowly oval-oblong ; spire exposed, the 

 rounded periphery of the penultimate whorl exsert and constricted 

 above and below ; the body-whorl arises abruptly from the suture 

 with a well-rounded curve to the highest point of the low back, 

 w^hich is a little behind the middle ; surface smooth. 



Aperture rather wide, shortly loop-like behind, without a dis- 

 tinct posterior canal, anteriorly produced into a short straight 

 beak with efluse lips. Outer lip margined, inconspicuously re- 

 flected, denticulated (about 25), slightly roundly-extending beyond 

 the spire. Inner lip with a slight ridge-like thickening at the 

 anal insinuation and confluent with outer lip, there are about 20 

 long narrow^ tooth-ridges. 



Dimensions. — Length, 25-5; width, 13; height, 11. 



Locality. — Eocene ; Muddy Creek (common). 



This species is somewhat intermediate in outline between 

 C. jyaraUela and C. pyrulata ; from the former it diflfers by its outer 

 lip more arched and projecting behind, by its less abrupt front- 

 truncation, and its short anterior canal ; from the latter by its 

 cylindroid outline. 



9. Cyprsea braehypyg-a, >ipec. nor. 



Allied to C. subpyrulata, but is much attenuated to the front 



