CENSUS OF THE OLDER TERTIARY FAUNA OF AUSTRALIA, 399 
Genus Mangilia. 
Outer lip varicose, labrum and columella smooth, sinus distinctly 
notched 
No typical species have yet been described from the Australian 
Tertiaries. MU. bidens, T..Woods, is transferred by Cossmann to 
Clathurella, and M. gracilirata of the same author belongs to 
Columbella. 
Subgenus Oythara. 
Columbelliform, labrum more or less denticulated within. 
Examples, Mangilia obsoleta and M. (Oythara) glabra, Harris. 
Family Naticip&. 
Genus Natica. 
Subgenus Lwnatia, Gray. 
This name is substituted for Naticina. 
Subgenus Stigmaulaz. 
Includes Natica (Naticina) limata and arata, Tate. 
Family CaLyPTR&IDZ. 
Sigapatella is included in Calyptrea. 
Family SoLaRiip&. 
Genus Heliacus, D’Orbigny, 1842. Syn. Torinia, Gray, 1847. 
Example, Solarium Wannonensis, Ten.-Woods. 
Family VERMETID2. 
Genus Thylacodes. 
Six species are referred to this genus by me in Trans. Roy. Soc. 
S. Aust., 1893, including Vermetus conohelix, Ten.-Woods. Ver- 
metus is unknown in our Older Tertiaries. 
Family EvLiMip2. 
Subularia is in substitution for Leiostraca, if it be worth retain- 
ing as a subgenus of Hulima. 
Family TURBONILLIDA. 
Odontostomia is the accepted amended spelling of Odostomia. 
Syrnola, according to Dall, 1892, is only entitled to subgeneric 
