FAM. GEOMETRID/7E 71 
The genus, as here understood, seems quite a natural one, in spite of a tolerable amount of 
variation in the shape of the termen of both wings, and some variation in the length of the third palpal 
joint. We have indicated as sectional the genera which have been accepted by some systematists, but 
do not attach great importance to them. The section CAloroglypAica presents the most distinct facies, but 
Megalochlora alone shows most of the principal varieties of shape. 
Type of the genus : Hifparchus papilionaría ( Linné) — Phalaena Geometra papilionaria, Linné ( 1829). 
Geographical distribution of species, — Palcarctic Region (chiefly the eastern part) and 
N. India. 
SECTION I, — Hindwing with termen crenulate, third joint of palpus shortish to moderate, 
C antenna bipectinate to apex, hair-pencil very small (Hipfarchus, Leach). 
I. H. papilionarta ( Linné). IEurope to Japan. 
Phalaena Geometra papilionaria, Linné, Syst. Nat. (ed. 10), Vol. 1, p. 522 (1758). 
Phalaena prasinaría, Hufnagel, Berl. Mag. Vol. 4, p. 506 (1767). 
Geometra papilionaria, Hübner, Samml. Eur Schmett., Geom. t. 2, f. 6 
(17962); p. 16 (1800 ?). 
Terpne papilionaria, Hübner, Tentamen, p. 2 (1806?). 
Hipparchus papilionaria, Leach, Edinb. Encycl. Vol. 9 (1j, p. 134 (1815). 
Holothalassis papilionaria, Hübner, Verz. bek. Schmett. p. 285 (1826 ?). 
Geometra herbacearia, Ménétriés, Mél. Biol. Acad, Sc. St-Pétersb. Vol. 3, 
p. 112 (1859) (ab.). 
Geometra papilionaria ab. cuneata, Burrows, Ent. Record, Vol. 17, p. 202 
(1905) (ab.). 
Geometra papilionarta ab.subcaerulescens, Buxrows,ibidem,p.202 (1905) (ab.). 
Geometra papilionaria ab. subobsoleta, Burrows, ibidem, p. 202 1905) (ab.). 
Geometra papiltonaria ab. deleta, Burrows. ibidem, p. 203 (1905) (ab.). 
Geometra papilionaria ab. alba, Gillmer, Soc. Ent. Zürich, Vol. 24, p. 42 
(1909) (ab.). 
SECTION II. — Forewing with apex subfalcate, both wings with termen otherwise smooth, 
palpus with third joint rather short to moderate, c' antenna with apex simple, hair- 
pencil strong (Loxochila, Butler). 
2. H. smaragdus (Butler). N. India. 
Tanaorhinus smaragtus, Butler, Ann. Mag. Nat. Hist. (5), Vol. 6, p. 128 
(1880) 
Loxochila smaragdus, Butler, Proc. Zool. Soc. Lond. p. 615 (1881); Ill. Het. 
Coll. Brit. Mus. Vol. 6, p. 69, t. 117, f. 5 (1886). 
Geometra smaragdus, Hampson, Fauna Ind. Moths, Vol. 3, p. 495 (1895). 
3. H. flavifrontaria (Guenée). India. 
Nemoria flavifrontaria, Guenée, Spec. Gén. Lép. Vol. 9, p. 346 (1858). 
Loxochila mutans, Butler, Proc. Zool. Soc. Lond. p. 615 (1881), 
Geometra flavifrontaría, Hampson, Fauna Ind. Moths, Vol. 3, p. 496, f. 220 
(1895). 
4. H. pratti, nov. sp. 1), Prout. Central China. 
Geometra flavifrontaria, Leech, Ann. Mag. Nat. Hist. (6), Vol. 20, p. 234 
(1897) (nec Guenée). 
1) Hipparchus pratti nov. sp. — 2,50 mm. Very similar to /avi/ronfaria, Guenée, build somewhat more robust, palpus somewhat 
longer, both wings with costa somewhat longer, colour brighter green, forewing with SC' anastomosing strongly with C, postmedian line of forewing 
broader, somewhat oblique (from costa ; mm. before apex to inner margin 8 mm. írom tornus), termen slightly less straight. Ichang, Tune, r888 
(Mrs. Pratt); type in coll. Brit. Mus. 
