234 LEPIDOPTERA- HETEROCERA 
with short projecting clasper. vinculum rounded, eighth sternite terminating in two lobes (cArysolineata 
leucospilota). 
Early stages unknown. 
Closely related to odis, differing chiefly in the form of the discocellulars, especially the incur- 
vature of DC' of the forewing. We have seen one aberrant example of chrysolineata in. which, in the 
hindwing, DC? is an almost straight continuation of DC?, but the oblique course of the two, and the 
lack of any incurve in DC? still keep the form distinct from Iodis. It is just possible the genera will prove 
to intergrade through some forms akin to Berta acte and fersimilis (in which the hindwing lacks the 
typical excision of Berta) and Iodis opalaria or iridescenus (in which the discocellulars of the Amdwing are 
inclined to assume the Bería course), but at present there is no difficulty at all in keeping the two genera 
apart. The very long 9 palpus, the shape of the hindwing, and to some extent of forewing (costa and 
termen inclined to be more rounded) and the separation of M! of forewing at its origin from R*, usually 
afford further distinctions. 
Type of the genus : Berta chrysolineata, Walker (1862). 
Geographical distribution of species. — India to N. Australia, W. Africa. 
SEgcTION I. — Hindwing with termen more or less crenulate. 
1. B. chrysolineata, Walker. 
a. Berta chrysolineata chrysolineata. India with Ceylon, Dutch New 
Berta chrysolineata, Walker, List Lep. Coll. Brit. Mus. Vol. 26, p. 1621(1862). Guinea. 
Thalera chrysolineata, Hampson, Fauna Ind Moths, Vol. 3, p. 516 (1895). 
b. Berta chrysolineata zygophyxia. Singapore, Bali. 
Berta chrysolineata zygophyxia, nov. subsp. 1), Prout. 
c. Berta chrysolineata leucospilota. N. Australia. 
Euchlovis leucospilota,Turner,Trans.Roy.Soc.S. Austral. Vol.28, p.221 (1904). 
Berta chrysolineata,T urner, Proc.Linn. Soc. N. S. Wales, Vol.35,p. 564 (19010). 
2. B. vaga (Walker). Borneo. 
Thalera vaga, Walker, List Lep. Ins. Brit. Mus. Vol. 22, p. 595 (1861). 
Berta vaga, Swinhoe, Lep. Het. Oxford Mus. Vol. 2, p. 405, t. 6, f. 8 (1900). 
3. B. acte (Swinhoe). Assam, Ceylon, ? W. China. 
Thalera acte, Swinhoe, Trans. Ent, Soc. Lond. p. 6, t. 1. f. 13(1802) 2). 
Euchloris acte, Swinhoe, ibidem, p. 175 (1894). 
4. B. albiplaga, Warren. N. India. 
Berta albiplaga, Warren, Proc. Zool. Soc. Lond. p. 357. t. 31, f. 5 (1593) 
5. B. discolor, Warren. Padang. 
Berta (?) discolor, Warren, Novit. Zool. Vol. r, p. 380 (1894). 
6. B. olivescens, Warren. Fergusson Island. 
Berta olivescens, Narren, Novit. Zool. Vol. 3, p. 287 (1896). 
SEcTION II. — Hindwing with termen not crenulate. 
7. B. persimilis (Warren). Niger to Cameroons. 
Chloromma persimilis, Warren, Novit Zool. Vol. 4, p. 36 (1897). 
ri) Berta chrysolineata zygophyxia, nov. subsp. — Shape and markings as in the Indian race c/rysoZrzeafa of the dull olive, 
moderately white-marked type, but with different venation, SC! of forewing arising just before end of cell (therefore well before R*, whereas in the name- 
type it is stalked to beyond R1), not anastomosing with C; forewing on the average rather broad, a rather conspicuous white spot in its apex. Singapore 
(2 Q), Bali (2 3), all in coll. Brit. Mus. Will probably prove a constant form, or even species. 
2) Geomefra acte on type label. 
