Manchester Memoirs, Vol. Lx. (191 6), No. 2. 



Text-fig. 1. — Holoptychius jlemingii, Ag. Restoration of head 

 (dorsal and right lateral aspects). Cl., Clavicle ; Fr., Frontal ; 

 I.T., "Intertemporal"; Ju., Jugal ; Or., Operculum; Pa., Parietal ; 

 P.O., Post-orbital ; P.Op., Pre-operculum ; P.P., Post-parietal ; P.T., 

 Post-temporal; Qu.J., Quadrato-jugal ; S.Ci.., Supra-clavicle ; Sq. , 

 Squamosal; S.T., Supra-temporal ; S.Op., Sub-operculum ; Tab.. 

 Tabular. Whenever possible, bones are referred to under the names 

 by which they are known in Amphibia, but the nomenclature of the 

 clavicular apparatus is that of fish. 



