FAM. GEOMETRIDZE 243 
consists largely of isolated specimens from scattered localities we have been unable to obtain much 
insight intothe limitsof the species, range of geographical or of individualvariation, and the like questions. 
Type of the genus : M:xocera parvulata (Walker) — Nemoria (?) pavvulata, Walker — Mixocera 
indecretata, Warren (nec Walker) (1901). 
Geographical distribution of species. — 5. India, Africa, N. to E. Australia. 
SUBGENUS I. — Antenna in cf dentate or subpectinate, with fascicles of cilia 
(Mixocera, Warren) (Pl. 5, Fig. 18). 
1. M. parvulata (Walker). Bombay to Ceylon,S. Africa 
Nemoría (?) parvulata, Walker, List Lep. Ins. Brit. Mus. Vol. 26, p. 1559 
(1862). 
Euchloris rectifasciata, Hampson, Fauna Ind. Moths, Vol. 4, p. 566 (1896) 
(nov. syn.). 
Mixocera indecretata, Warren, Novit. Zool. Vol. 8, p. 206(1901) (nec Walker |. 
2. M. frustratoria (Wallengren). S. Africa. 
Eucrostis frustratoria, Wallengren, Wien. Ent. Monatschr. Vol. 7, p. 150 
(1863). 
Eucrostis frustatoria, Walker, List Lep. Ins. Brit. Mus. Vol. 35, p.1610|1866). 
? Euchloris oleagina, Warren, Novit. Zool. Vol. 4, p. 38 (1896) (nov. syn.) 1). 
? Microloxia (2) serraticornis, Warren, ibidem, p. 42 (1897). 
? Mixocera serraticornis, Warren, ibidem, Vol. 8, p. 206 (1901). 
3. M. albistrigata (Pagenstecher). Tropical Africa. 
Eucrostis albistrigata, Pagenstecher, Jahrb. Hamburg. Anst. Vol. 10, p. 252 
(1893). 
Mixocera albimargo, Warren, Novit. Zool. Vol.8, p 206 (1901) (nov. syn.) 2). 
SUBGENUS II. — Antenna in both sexes shortly pectinate (Gynandria, Turner). 
4. M. latilincata (Walker). N. to S. E, Australia. 
Geometra. latilineata, Walker, List Lep. Ins. Brit. Mus. Vol. 35, p. 1605 
(1866). 
Eucrostis latilineata, Meyrick. Proc. Linn. Soc. N. S. Wales (2), Vol. 2, 
p. 868 (1888). 
Mixocera latilineata, Warren, Novit. Zool. Vol. 8, p. 206 (19or). 
Gynandria latilineata, ''urner, Proc. Linn. Soc. N. S. Wales, Vol. 35, 
p. 576 (1910) 
SUBGENUS III. — Antenna in Gf simply ciliated, in Q very minutely ciliated 
(Thelycera, nov., Prout; type : Mixocera hemithales, Prout). 
5. M. hemithales, nov. sp. 3), Prout. British E. Africa. 
1) We have not seen Wallengren's type, but the synonymy seems fairly safe. In any case serra£rcor?is is clearly the same as oZeagima. 
2) Pagenstecher merely gives the cj antenna of his a/A/s/r£gafa as « ciliated », but his whole description fits the subgenus JMzxocera so perfectly 
that it can hardly possibly be referred to a. ZeZycera unknown to us — especially as itoccurs in such widely separated localities as Portuguese East Africa 
and Angola — and we consider the synonymy here given to be practically quite certain. It is, indeed, not absolutely inconceivable that all the three 
Mixocera here registered are but forms of one protean species. 
1) Mixocera (Th*lycera) hemithales, nov. sp. — dG, 23 mm. Face, palpus, upper part of foreleg, antennal shaft above and 
postorbital rim brown-red, head otherwise pale grcen (tinged with ochreous —? discoloured). Thorax pale green above, whitish beneath; abdomen 
whitish. Forewing pale yellow green, costa narrowly whitish ochreous; a straight, thick whitish line from costa at r 1/2 mm. from apex to inner 
margin at about 3 mm. from tornus, no other markings; fringe whitish. Hindwing white, unmarked. Underside of forewing greenish white, of hind- 
wing clearer white. Fort Hall, Kenya District, British East Africa, about 4000 feet, 2 November, 1902 (S. L. and H. Hinde). Type in coll. Oxford 
Mus., presented by the captors. The specimen is slightly faded, and it is likely that an absolutely fresh specimen would more nearly approach the 
coloration of the foll wing species. A Q from Salisbury, Mashonaland, February, 19oo (G. A. K. Marshall)and a smaller Q from Bulawayo, 21 November, 1902 
(F. Eyles), both in coll. Brit. Mus., may likely belong to the present species. 
