Curia Hostilia

Orberg refers (in Cap XXXVI of LLPSI ) to the Curia Hostilia as follows:

‘… tunc vero in antiquam curiam Hostiliam…’

Is Hostiliam an adjective in this case: hostilius, -a, -um…?

Is Hostiliam an adjective in this case: hostilius, -a, -um…?

Yes.

http://en.wikipedia.org/wiki/Curia_Hostilia

Thanks Qimmik