Lewis Short
(adjective) : auspĭcālis, e, id.
* Of or pertaining to divination, suitable for auguries, auspicial: pisciculus,Plin. 32, 1, 1, § 4: dies,Mamert. Pan. Maxim. 6.—* Adv.: auspĭ-cālĭter = auspicato, with the appropriate taking of auguries: ponere gromam,Hyg. Limit. Constit. p. 153 Goes.
Charlton T. Lewis, Charles Short, A Latin Dictionary