mantum

(Pius XI seated upon the papal throne in papal mantum, with Cardinal deacons in cappa on either side)

More Rare Images: Good Friday with Pius XI in the Sistine Chapel 2009

The pope, wearing the falda, amice, alb, cincture, pectoral cross, stola, cope (mantum), and tiara is carried into the basilica on the sedia gestatoria under the canopy and with the two flabella borne on either side.

The Catholic Encyclopedia, Volume 12: Philip II-Reuss 1840-1916 1913

Further we must note the papal mantum, which differs little from an ordinary cope except that it is red in colour and somewhat longer.

The Catholic Encyclopedia, Volume 4: Clandestinity-Diocesan Chancery 1840-1916 1913

In the eleventh and twelfth centuries the immantatio, or bestowal of the mantum on the newly elected pope, was regarded as specially symbolical of investiture with papal authority.

The Catholic Encyclopedia, Volume 4: Clandestinity-Diocesan Chancery 1840-1916 1913

a large cloak she had made for him (mantum majorem quem de cannabe fecit).

The Catholic Encyclopedia, Volume 3: Brownson-Clairvaux 1840-1916 1913