58 



there are, moreover, other uiiicolorous white species of very 

 similar appearance in the Oecoj>1i(>rid(r and Gelechiad(^, which 

 might very easily be mixed with them, even by a skilled observer. 

 The superficial resemblance of these various forms is very great, 

 but I am unable to determine whether they imitate one another 

 or a common model, or whether the very simple resultant may 

 not have been produced independently by similar development 

 under analogous circumstances, without direct imitation of any- 

 tliing; for instance, the end desired might have been conspicuous- 

 ness. 



1. Forewings with three ochreous-brown fascia?. 



53. opliiogrativina. 

 " without fascite. 2. 



2. Forewings with darker longitudinal discal streak. 3. 



without " " " " 4. 



3. Forewings with dorsal half wholly light fuscous. 



55. strigata. 

 " " " " not " " 54. synaula. 



4. Forewings with tips of hindmarginal cilia orange. 



59. luteotactella. 

 " " " white. 5. 



5. Sides of face orange. 57. cosmopis. 



" "' not orange. 6. 



6. Sides of face fuscous. 58. argenteUa. 



" " ochreous-white 56. orectis. 



53. Xyl. opiiiogramma, n. sp. 



Female 24-28 mm. Head orange. Palpi pale yellowish, second 

 joint dark fuscous externally on lower f, terminal joint whitish, 

 anterior edge fuscous. Antenna? ochreous-whitish. Thorax sil- 

 very-white, with a transverse ochreous-brown bar behind collar. 

 Abdomen whitish-ochreous. Legs dark fuscous, middle pair 

 banded with ochreous-whitish, posterior pair pale yellowish. 

 Forewings elongate-oblong, costa slightly arched, apex obtuse, 

 hindmargin straight, little oblique ; silvery-white ; markings dark 

 ochreous-brown ; a slender costal streak from base to ^ ; three 

 narrow irregular fascia^, first very near base ; second from 

 beyond middle of costa to before middle of inner margin, slightly 

 sinuate inwards on lower half ; third from costa before apex to 

 anal angle, rather angulated inwards in middle, lower extremity 

 connected with middle of second fascia by an irregular bar : cilia 

 whitish-ochreous, base more yellowish-ocherous. Hindwings 

 whitish-ochreous, yellowish-tinged, towards apex suffused with 

 light grey ; cilia as in forewings. 



Duaringa, Queensland ; three specimens received from Mr. G. 

 Barnard. Larva, according to Mr. Barnard, residing in a barri- 



