Ms. Douce 118 in the Bodleian Library, Oxford is a Psalter made for Joffroy d’Aspremont and his wife during the late 13th century .
Folio 12r shows in the lower marginalia a stag’s head emerges from a (dextral) snail shell opposing a grotesque with nun’s head and bird’s legs. Two hybrids meating…; perhaps a subtle variation on the knight v. snail theme?
Another malacohybrid is on folio 16r, where in the upper margin a sinistral shell has a human head with horns.
Both shells are stylised and ornamented as imaginary species.
 BLO, inv. Ms. Douce 118, 30 ff.