GEOMETRIDAE. 



(Corals and Atolls, p. 354, 1910) records, " Chloroclystis tenuilinea Warren " 

 from Cocos Keeling Is., not uncommon in June and August, the larva green, 

 with darker markings, and slightly hairy, feeding on the sticky flowers of Pisonia 

 and pupating among them. But I suspect this is an error of determination ; 

 the only Chloroclystis I have seen from that locality (1 $ in Mus. Brit., 3 in 

 Mus. Tring) is a remarkably lepta-like species. 



Gymnoscelis Mabille. 



Ann. Soc. Ent. Fr., (4), vii, 656, 1867 — Meyrick, Tr. Ent. Soc. Lond., 1892, p. 65, 1892.— Hampson, 

 Faun. Brit. Ind., Moths, iii, 388, 1895.— Turner, Proc. Roy. Soc. Vict., xvi, 224, 1904.— 

 Dietze, Biol. Eupith., 15, 1913.— Dolerosceles Meyrick, Tr. Ent. Soc. Lond., 1889, p. 480, 1889. 



Differs from Chloroclystis in the absence of the proximal spurs of the hind 

 tibia. A small intermediate genus, Calluga Moore = Sillophora Warren, with 

 a single proximal spur (SC 1 of fore wing as in Chloroclystis) and divisible on £ 

 characters into several sections, may prove to be represented in Polynesia by 

 a race, or races, of C. costalis Moore, which is already known to be represented 

 in New Guinea by C. (S.) albiviridis Warren (1907), and in Queensland by G. 

 cissocosma Turner (1904) ; or of Calluga (Megatheca) catocalaria Snellen (1881, 

 Celebes) = C. purpurea Warren (1897, Penang) = C. lobata $ Hampson (1912. 

 Ceylon), which is scattered over the islands of Malaya and Melanesia. 



Of Gymnoscelis about sixty species are known, but the number is likely 

 to be greatly increased when they have been more thoroughly studied, since 

 the majority are small and obscure ; and often confusingly alike. On the 

 other hand, some of them clearly have a very wide distribution. Of the known 

 about five species are Palaearctic, and some ten are African, the rest Indo- 

 Australian, with a rather high percentage in Queensland — probably because the 

 Australian Geometridae are being carefully studied by a competent entomologist, 

 Dr. A. J. Turner, while in many other parts of the region the small species are 

 almost entirely neglected. 



Specialised <$ sections are rarer and less striking in this genus than in the 

 preceding genera. Perhaps the most striking is Iramba Moore, with its curiously 

 tufted middle and hind tibiae. This is represented in India and Malaya by the 

 type species G. tibialis Moore, and in Australia by G. lophopus Turner (1904) 

 = G. homogona Turner (1907), and may be expected to occur in many other 

 parts of the region. 



