Isis as a Serpent
Isis with Serpent Tail, 2nd century CE
Sculpture; Ceramic, Terracotta, 6 9/16 x 3 3/8 in. (16.6 x 8.6 cm)
Gift of Jerome F. Snyder, LACMA M.80.202.222

The museum photo shows more detail

James H. Charlesworth shares two more examples
The Good and Evil Serpent: How a Universal Symbol Became Christianized, page 133

"The broken one depicts an Isis with a serpent's body, a high crown (polos), and a torch. Both are similar to the first-century BCE sandstone stele of the snake-bodied Isis and Dionysus in the British Museum.

"Isis was portrayed not only as partly serpentine, but also holding a cobra, or with two large serpents. Like Asclepius who appears ubiquitiously holding a staff around which is curled a serpent, Isis is also imagined as an upraised cobra with its hood extended. It is now clear that the Egyptian Isis cult was active in Rome, especially in the coastal cities, like Venice, ancient Ostia, and particularly Aquileia."(Good and Evil Serpent, page 132)