PLATE 3 



Figures 1 and -. J'tilratti O>VY/OOJM'V, n. sp. Type. Diameter, 8.0 nun.; 

 altitude, 5.0 nun. 



Figures 3 and 4. I'tilrtila orcf/onen.^in, n. sp. Paratype. Enlarged 5.5 di- 

 ameters. Showing elevation of spire and slight formation 

 of marginal carina. 



Figures 5 and (i. I'ah'tilti orcf/oiiciibiN, n. sp. Para type. Enlarged 5.5 di- 

 ameters. Spire much elevated and marginal carina more 

 pronounced. 



Figures 7 and 8. }'<ilrtilii orei/oneii^is, n. sp. Paratype. Enlarged 5.5 di- 

 ameters. Spire depressed, dorsal carina present. 



Figures 9 and 10. I'alriild f'ef/oiirn.\iti, n. sp. Paratype. Enlarged 5.5 di- 

 ameters. Spire depressed, basal carina present. 



FFignres 11 and 1^. Valrata orcf/onrn^ix, n. sp. Paratype. Enlarged 5.5 

 diameters. Spire greatly elevated, marginal car : na present. 



Figures i:> and 1 I. I'lilrdtn orcf/oiirnxis, u. sj>. Pamtype. Enlarged 5.5 

 diameters. Spire greatly depressed, basal earina present. 



Figures 15 and Hi. I'dlrtild oref/onni.^is, n. sp. Paratype. Enlarged 5.5 

 diameters. Spire normal; dorsal and basal carinse present. 



figures 17 and 18. r<ilnit/i orci/niK'tit-ix. n. sp. Paratype. Enlarged 5.5 

 diameters. Spire elevated, dorsal, marginal and basal 

 carina 1 present. 



20 



