sobrinus, Periophthalmus Eggert [B.] 1935:95, Pl. 9 (figs. 37-38) [Zoologische Jahrbücher, Abteilung für Systematik, Geographie und Biologie der Tiere (Jena) v. 67; ref. 13880] Loe Arafali, Eritrea, Red Sea; Somalia, northwestern Indian Ocean. Possible syntypes: MSNG 7892 (1) + 23257 (2) = now 2 in 7892. Comments on types for Periophthalmus sobrinus Eggert 1935: Konstantinidis et al. 2016:[5] [ref. 34503] as 14 syntypes. •Synonym of Periophthalmus argentilineatus Valenciennes 1837 -- (Murdy 1989:32 [ref. 13628]). •Valid as Periophthalmus sobrinus Eggert 1935 -- (Dor 1984:253 [ref. 29757], Hoese 1986:799 [ref. 5670], Maugé 1986:400 [ref. 6218], Poll & Gosse 1995:111 [ref. 24781], McKay & Miller 1997:1466 [ref. 24951]). •Synonym of Periophthalmus kalolo Lesson 1931 -- (Kottelat 2013:419 [ref. 32989]). Current status: Synonym of Periophthalmus kalolo Lesson 1831. Gobiidae: Oxudercinae. Distribution: Red Sea and northwestern Indian Ocean (if valid). Habitat: freshwater, brackish, marine.