v. 42. Adders and cerastes.]

Vipereum crinem vittis innexa cruentis.

Virg. Aen. l. vi. 281.

—spinaque vagi torquente cerastae

. . . et torrida dipsas

Et gravis in geminum vergens eaput amphisbaena.

Lucan. Pharsal. l. ix. 719.
So Milton:

Scorpion and asp, and amphisbaena dire,

Cerastes horn’d, hydrus and elops drear,

And dipsas.