chilcae, Psammobatis Hildebrand [S. F.] 1946:61, Fig. 12 [Bulletin of the United States National Museum No. 189; ref. 2161] Chilca Bay, Peru. Holotype (unique): USNM 127785. •Valid as Psammobatis chilcae Hildebrand 1946 -- (Chirichigno F. & Vélez D. 1998:89 [ref. 24555]). •Synonym of Sympterygia brevicaudata (Cope 1877) -- (McEachran 1982:887 [ref. 5381], Weigmann 2016:102 [ref. 34211]). Current status: Synonym of Sympterygia brevicaudata (Cope 1877). Arhynchobatidae. Distribution: Southeastern Pacific (if valid). Habitat: marine.