Each spandril contains an angel, holding a trumpet or other musical instrument.
"Account of a Tour in Normandy, Vol. II. (of 2)"
Dawson Turner
On the right side of the nave, at the spring of the arches, between two of the piers, is a centaur armed with a bow, cut in the stone, and on the opposite spandril are two goats, disposed back to back, also cut in the rock.
"Castles and Cave Dwellings of Europe"
Sabine Baring-Gould
In the spandril above the outer archway is carved, 'amid elegant scroll-work and foliage, an arm, vested in an ermine maunch, the hand grasping a golden fleur-de-lys'-the old coat-armour of the Mohuns; and on the other spandril 'three lions passant in pale,' the bearing of the Carews.
"Devon, Its Moorlands, Streams and Coasts"
Rosalind Northcote