DREPANIDIDiE. 
813 
Hemignathus obscurus (Gm.). (10-4.) Akialoa. 
Certhia obscura Gmelin, Syst. Nat. vol. i. pt. i. p. 470, 1788 : Sandwich 
Islands. (Fig. Av. Lays. pi. 49 ; Av. Haw. pi. 28.) 
Distr. —(Hawaii) Hawaiian Islands. 
Hemignathus lanaiensis Rothsch. Long-billed Akialoa. 
Hemignathus lanaiensis Rothschild, Bull. Brit. Orn. Club, vol. i. 
p. xxiv, 1893 : Lanai. (Figs. Av. Lays. pi. 48.) 
Distr. —Lanai, Hawaiian Islands. 
Hemignathus ellisianus (Gray). Yellow-fronted Akialoa. 
Drepanis (Hemignathus) ellisiana Gray, Cat. Birds Trop. Isl. Pac. 
p. 9, 1859 (1860) : new name for obscurus Licht., not Gm.: 
Oahu,Sandwich Islands. (Fig. Av. Lays. pi. 47 ;-Av. Haw. pi.27.) 
Hemignathus lichtensteini Wilson, Ann. & Mag. Nat. Hist. 1889, p. 401 : Oahu. 
Distr. —Oahu, Hawaiian Islands (extinct). 
Hemignathus procerus Cab. Grey-backed Akialoa. 
Hemignathus procerus Cabanis, Journ. f. Ornith. 1889, p. 331 : Kauai. 
(Fig. Av. Lays. pi. 46 ; Av. Haw. pi. 26.) 
Hemignathus stejnegeri Wilson, Ann. & Mag. Nat. Hist. 1889, p. 401 : Kauai. 
Distr. —Kauai, Hawaiian Islands. 
Genus SASSIUS R. & H. 
Sassius Rothschild & Hartert, Bull. Brit. Orn. Club, vol. xlvi. p. 51, 
Jan. 30th, 1926. Type (by monotypy): Sassius simplex R. & H. 
Sassius simplex R. & II. 
• Sassius simplex Rothschild & Hartert, Bull. Brit. Orn. Club, 
vol. xlvi. p. 51, 1926 : Sandwich Islands. 
Distr . — Hawaiian Islands (extinct). 
Genus HETERORHYNCHUS Lafr. 
Heterorhynchus Lafresnaye, Mag. de Zool. 1839, pi. 10. Type (by 
monotypy): Heterorhynchus olivaceus Lafr.= Hemignathus lucidus 
Licht. 
Heterorhynchus lucidus (Licht.). (10-4 & 5.) 
Oahu Akiapoalaau. 
Hemignathus lucidus Lichtenstein, Abhandl. der Konigl. Ak. Wiss. 
Berlin, 1839, p. 451, pi. 5. figs. 2 & 3 : Oahu. (Fig. Av. Lays, 
pi. 53; Av. Haw. pi. 29.) 
3 Q 2 
