32 
WATERHOUSE 
Family PIERXIRE 
Ovum —“ Very tall and slender, tapering toward a much smaller 
rounded summit, provided with a variable number of dis¬ 
tinct longitudinal ribs, and crossed by frequent transverse 
finer raised lines.”—(Scudder.) 
Larva —Usually smooth, cylindrical, often gregarious. 
Papa —Angulated, more or less pointed at either end ; attached 
by the tail and a central girdle. 
Imago —Of moderate size ; six perfect legs in both sexes, without 
spurs, claws bifid. 
This family contains “ the whites ” and “ the yellows.” 
Many of the species are delicate insects. By following some 
modern authors, several of the species enumerated below would 
be considered as mere varieties, but in the present state of our 
knowledge I prefer to leave them as they are at present 
determined, until the full seasonal changes, which I believe to 
be very great, are thoroughly worked out. 
60. TERIAS, Swainson. 
Zool. Ill. i. pi. 22, 1820-21; Butler, P.Z.S. 1871, p. 526; 
Misk. Proc. Boy. Soc. Q’ld. 1889, p. 256 ; Butler, Ann. Mag. 
Nat. Hist. 1898, p. 56-82. 
I am totally opposed to splitting up the variously-marked 
forms and considering ' them as distinct species. Out of over 
fifty specimens of T. hecabe caught on one day, I was not able 
to pick out two that were marked identically. I am only able 
to recognise from amongst my long series six distinct forms. 
The following arrangement of the species with their synonyms 
must only be considered provisional, as seasonal forms occur. 
195. T. vtego, Wallace, Trans. Ent. Soc. Bond. 1867, p. 328. 
JButler considers our form distinct,, and has called it 
T. papuana. 
Hab. Cape York. 
T. hecabe, Linn. Syst. Nat. x. p. 470, 1758. 
Butler considers our form distinct, calling it T. sulphurata, 
Butler, with eleven other species all described by himself as 
synonyms. He says : “ Ranges from Northern Australia north¬ 
wards to Timor, Aru and New Guinea, thence eastward to New 
Ireland, appearing just to touch the Solomons ; more to the south 
it ranges to the Loyalty, New Hebrides and Fiji Islands. 
Hab. Cape York to Sydney. 
T. heela, Macl., King’s Surv. Aust. ii. App. p. 460, 1827. 
The type in the Macleay Museum has a beautiful pink suffusion 
on the underside of the hindwings : this is the rarest form. 
Hab. Brisbane to Cape York, Sydney P 
