CENSUS OF THE OLDER TERTIARY FAUNA OF AUSTRALIA. 391 
but is probably Older Tertiary. The genus is new for beds of this 
age. 
Family SrruTHIOLARIIDE. 
Genus Pelicaria, 
Harris states that Buccinwm scutulatum, Martyn, is not the 
type of Gray’s Pelicaria, but B. vermis, Martyn ; and that there- 
fore Pelicaria falls in synonymy with Struthiolaria; he proposes 
Tylospira as the generic name. 
Family Conip2. 
Genus Conus. 
Messrs. Cossmann and Harris have attempted to bring some of 
our Eocene Cones into subgeneric groups as under :— 
Subgenus Stephanoconus, Mérch. 1852. 
The shells of this group are distinguished from Conus, s.3., by a 
more elongate spire, crowned by obtuse tubercles near the superior 
suture. Example, C. Hamiltonensis, Tate. 
Subgenus Lithoconus, Morch. 
Distinguished by the absence of sutural crenulations, by the 
aperture dilated in front and with a rather deep posterior sinus. 
Examples, C. Dennanti, C. pullulescens, C. cuspidatus. 
Subgenus Chelyconus, Morch. 
Spire elevated, last whorl convex near the suture, rounded at 
the shoulder, posterior sinus not very deep. Example, C. Ralphii, 
Tenison- Woods. 
Subgenus Leptoconus, Swainson, 1840. 
Examples, (. heterospira, C. extenuatus, C. acrotholoides, 
C. Murravianus, and C. ptychodermis, C. ligatus, Tate. 
Genus Hemiconus, Cossmann, 1889. 
Hemiconus Cossmannt, spec. nov. (Plate 19, fig. 11.) 
Shell biconic, spire about one-third the total length ; embryo 
relatively large of one and a half smooth whorls, apex obtuse 
hemispheric, the tip somewhat lateral. Spire-whorls five, the 
first and second concave by the development of a spiral rounded 
