Fulgoroidea — Flatidae and Hypochthonellidae 
475 
principalis St&l 
1865 Flaloides 'principalis St&l, Ofv. Svenska Vet. Akad. Forh. 22: 
159 [n. sp.] 1 
1870 F\latoides] ( Cerfennia ) principals] Stal, Ofv. Svenska Vet. 
Akad. Forh. 27: 775 [Comparative note] 
1886 Flatoides principalis Atkinson, Jour. Asiatic Soc. Bengal 55: 80 
[Described] 2, 3 
1902 Flatoides principalis Melichar, Ann. Nat. Hofmus. Wien 17 : 208; 
PI. IX, Fig. 6 [Described, illustrated, catalogued] 4 :178 [Key] 
1923 Rabocha principalis Melichar, Gen. Insect. 182: 110 [Catalogued] 1 
Equals Flatoides [ principalis Still] 
Localities: 1 British Malaya. 2 Malacca. 3 Siam. 4 Malay States. 
Genus Gaja Distant 
Orthotype G[aja] definitiva [n. sp.] 1906 Distant, Fauna of British 
India 3 : 460 
Type Gaja definitiva 1923 Melichar, Gen. Insect. 182: 110 
Q a j a 1906 Distant, Fauna of British India 3: 460 [gen. n.] 
:449 [Key] 
1912 Waterhouse, Index Zoologicus No. II 1912: 112 
[Listed] 
1920 Cockerell, Proc. United States Nat. Mus. 57: 240 
[Comparative note] 
1921 Cockerell and Sandhouse, Proc. United States Nat. 
Mus. 59 : 457 [Comparative note] 
1923 Melichar, Gen. Insect. 182: 105 [Key] :1 10 [De- 
scribed, catalogue of species] 
1924 Cockerell, Proc. United States Nat. Mus. 61 (13) 
:9 [Comparative note] 
1929 Schulze, Kukenthal and Heider, Nomenclator 
Animalium 3 (11) :1332 [Catalogued] 
1939 Neave, Nomenclator Zoologicus 2: 431 [Cata- 
logued] 
definitiva Distant 
1906 Gaja definitiva Distant, Fauna of British India 3: 460; Fig. 248 
[n. sp., illustrated] 1 
1923 Gaja definitiva Melichar, Gen. Insect. 182: 110 [Catalogued] 1 
Localities: 1 Ceylon. 
facialis Distant . 
1906 Gaja facialis Distant, Fauna of British India 3: 46L; 
[n. sp., illustrated] 1 
Fig. 
250 
