GEOMETRIDAE. 



121 



timoclea, the hind tibial process vestigial (in T. chloropis well developed), M 1 

 of the fore wing just stalked (in T. timoclea and generally in T. chloropis separate). 

 The face appears to have been green. The wing-length slightly exceeds that of 

 T. chloropis, the apex of the fore wing is minutely produced, its termen almost 

 straight, moderately oblique, and the bend in the mid-termen of the hind wing 

 is weak. 



5. Thalassodes pilaria Guenee. 



Thalassodes pilaria Guenee, Spec. Gen. Lep., ix, 361, t. xv, f. 2, 1858 (Tahiti). 

 Thalassodes quadraria Guenee," 'Rebel, Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. Kl., 

 Ixxxv, 428, 1910 (Samoa). 



Upolu : Apia, 1 13.ix.1923 (Swezey and Wilder) ; 1 $, 14.ix.1923 (Swezey 

 and Wilder) ; 2 2 $$, undated (Woodford) ; 1 <J, I $ in Mus. Tring, 2.xi.l924, 

 1 % vi.1925 ; 1 £ (very worn). 



Tutuila : Pago Pago, 1 i.1924 (Steffany), 1 



Manua : Tau, 3 20, 23.ii.1926 (Judd) ; Ofu, 2 <J<J, 2 27.ii.1926 

 <Judd). 



This species differs from T. chloropis in the face being red-brown (the face 

 in both species is unfortunately very liable to injury), the third segment of the 

 palpus and the terminal process of hind tibia rather shorter (the process in 

 the $ of T. chloropis being nearly half as long as the first tarsal segment) and 

 in having M 1 of the fore wing stalked with R 3 . Under the name T. quadraria, 

 Rebel writes : " Upolu, 3, of which 1 $ Vaimea 7 June and 1 $ Malifa 10 June 

 quite agree ; face red-brown, quite as in Indian." It is perhaps legitimate to 

 conjecture that the third example, not mentioned in greater detail, belonged 

 to T. chloropis. 



T. pilaria is now known to occur in Fiji, Samoa, the Society Islands, and 

 Pitcairn Island. On the first-named islands, according to Veitch and Green- 

 wood (Proc. Linn. Soc. N. S. Wales, xlvi, 507, 1921, xlix, 154, 1924), the larva 

 has been found on Rosa, sp., Ricinus communis, Inocarpus edulis, Mangifera 

 indica, and Eugonia indularis. 



Pyrrhorachis Warren. 



Nov. Zool, iii, 292, 1896.— Prout, Gen. Ins., 129, p. 238, 1912 ; Lep. Cat., 14, p. 162, 1913.— 

 Turner, Proc. Linn. Soc. N. S. Wales, xxxv, 569, 1910 (Pyrrhorhachis, ex err.). 



This compact little genus comprises only a few very closely related species ; 

 certain others of doubtful affinity, provisionally referred to it, would be better 



