However, Placostegus tricuspidatus sensu Langerhans (1880, 1884) see Placostegus langerhansi fide Zibrowius 1973: 75. [details]
Not stated, but H. augeneri is evidently named after taxonomist Hermann Augener [details]
Not stated, but the species H. monroi is evidently named after C. C. A. (Charles Carmichael Arthur) Monro, who had ... [details]
Zibrowius (1973: reports a holotype "Annobon, coll. Arnold SCHULTZE, 7.XI.1911 (holotype, ZMH V. 8724)." The basis ... [details]
Regarded to be undeterminable by Zibrowius (1973b), it is tentatively placed in Filogranella based on its general ... [details]
Omphalopomopsis fimbriata sensu Bellan (1964, 1965) is a synonym of Placostegus assimilis [details]
The locality "Malembe", in Zaire (now Democratic Republic of Congo) could not be found. A coastal georeference of ... [details]
Isla Tortuga, off Isla Annobón, Equatorial Guinea, Gulf of Guinea, Gazetteer -1.4055° 5.6562° [details]
Pointe Noire, Congo, West Africa. Gazetteer estimated geolocation -4.7858° 11.8361° [details]