Genus HIIYACICHT7TYS Eoulenger 
Rhyaclohthys BOULENGER, Ann. Mag. Nat. Hist., London, sen. 7 , vol. 3, 
p. ? 6 ?, 1901.- (Type Platyptera melanocephala (KT7HL and VAN HASSELT) CUVIE 
Platyptera aspro (KUHL and VAN HASSELT) VALENCIENNES, virtual monotype. 
Rhyacichthys BCULENGER proposed to replace Platyptera (KUHL and VAN 
HASSELT) CUVIER 
■) 
Pjatypte.ra (not MEIGEN IS 03 ) (KUHL and VAN HASSELT) CUVIER, Eegne 
Animal, vol. 2, ed. 2, p. 248, 1829 . (Type Platyptera melanocephala 
0 and VAN HASSELT) CUVIER, designated by JORDAN and EVERMANN, Genera 
of Fishes, pt. 1, 1917, p. 130.^ 
Platypterus SWAINSON, Nat. Hist. Animals, vol. 2, p. 183 , 1839 . (Type 
P latyptera melarocephala (KUHL and VAN HASSELT) CUVIER. Platypterus 
SWAINSON proposed to replace Platyptera (KUHL 
; 
