GEOMETRIDAE. 



119 



i. Thalassodes charops, sp. n. 



53-54 mm. Face green. Palpus in J I J, in $ over 1|, terminal seg- 

 ment in both sexes moderately elongate, about f of second segment ; green, 

 beneath white. Vertex and base of antenna white ; occiput green. Thorax 

 and abdomen above green, with a conspicuous whitish longitudinal line ; beneath 

 and at extremity white. Legs white, the anterior brown on inner side ; hind 

 tibia in dilated, with hair-pencil, terminal process reaching middle of first 

 tarsal segment. 



Fore wing with apex rather acute, termen oblique, almost straight, very 

 faintly sinuous, tornus pronounced ; M 1 separate ; American green, with short 

 and not very copious white strigulae ; costal margin white, mostly as far as C, 

 at base only very narrowly ; lines white, very slender ; antemedian weak, 

 very oblique outwards, anteriorly obsolete ; postmedian straightish ; fringe 

 white. Hind iving with termen only very weakly bent in middle ; M 1 stalked ; 

 concolorous with fore wing ; a white cell-spot, slightly angular on base of R 2 , 

 slenderly outlined with brown-red ; postmedian line of the normal Thalassodes 

 form, but very weak posteriorly ; fringe white. 



Under side much paler, not strigulated ; the white markings showing 

 faintly ; fringes white. 



Upolu : Malololelei, 2,000 feet, type 30.vi.1924 ; allotype $, 21.xi.1924. 



Savaii : Fagamalo, 1 1925. 



A fine species, not manifestly closely allied to any other. Thalassodes 

 leucoceraea Prout, 1925 (Malay Peninsula), and T. floccosa Prout, 1917 (Malay 

 Peninsula and Java), share with it the white cell-spot of the hind wing, but 

 otherwise their shape, the non-separation of M 1 of the fore wing and the different 

 scheme of markings suggest that the present species has been independently 

 evolved. The whole genus, even including its few African representatives, is 

 very homogeneous. 



This species will be figured, in colour, on a plate which will appear in 

 Part III, Fascicle 4. 



2. Thalassodes chloropis Meyrick. 



Thalassodes chloropis Meyrick, Trans. Ent. Soc. Lond., 1886, p. 204, 1886 (Fiji). 



% " Thalassodes veraria Guenee " (Bethune-Baker, Proc. Zool. Soc. Lond., 1905, p. 94, 1905 (Fiji)). 



Upolu : Malololelei, 1 & 22.iii.1924, 1 $, 22.ii.1924, 3 $$, 24.ii.1924, 3 $?, 

 21.iv.1924, 2,000 feet; Apia, Vailima, 1 <j>, 14.viii.1922 (Armstrong); Apia, 



