Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Phorcis, ĭdis, v. 2. Phorcus, A. (†
2. Phorcus, i (also Phorcys, yos, and Phorcyn, ȳnos, acc. to Prisc. p. 690 P., but acc. to Serv., Verg. A. 5, 240, these forms are not used in Lat.), m., = Φόρκος, Φόρκυς, and Φόρκυν, son of Neptune, father of Medusa and the other Gorgons, and of the Grœœ, who was changed after death into a sea-god, Cic. Univ. 11, 35: Phorci chorus, Verg. A. 5, 240; or, Phorci exercitus, i. e. sea-gods, id. ib. 5, 824: pater Phorcys, Val. Fl. 3, 726; Luc. 9, 645.
Hence,