T. arguta -5- 
Trochosmilia arguta Reuss, Duncan. 
PI. figs. 
1873. Trochosmili a arguta , Duncan, Quart. Jour. Geol. Soc. 
London, Vol. XXIX, p. 552, PI. XIX, fig. 3. 
The following are Duncan's notes: 
"Some specimens from the limestone of St. Bartholomew, and 
in the collection of the University of Upsala, so closely resemble 
this species * from the Castel-G-omberto Oligocene that I am dis- 
posed to consider them geographical varieties. 
Var . with a few more costae than the type. 
* Reuss, Denkschr. Akad. Wiss. Wien, math.-nat. Cl. Band 
xxviii, p. 140. 
