Crathis, The name of two riuers, the one in Greece, the other in Calaber.
Lewis and Short: Latin dictionary
Crāthis, ĭdis, m., = *kra=qis, a river in Magna Graecia, whose water was said to redden the hair, now Crati or Gratti, Plin. 3, 11, 15, 97; 31, 2, 9, 13; 31, 2, 10, 14; Ov. M. 15, 315; id. F. 3, 581.