14 



Transactions. — Zoology. 



Thorax more or less strongly crested anteriorly and often pos- 

 teriorly. Abdomen more or less distinctly crested towards 

 base. 



Probably cosmopolitan, but relatively much more numerous 

 in New Zealand than elsewhere. Larvae 16-legged, feeding on 

 grasses and low plants. 



Abdomen partly rosy 

 not 



A. Hindwings rosy 



grey 



B. Forewings distinctly green 



C. All veins conspicuously pale 



)) not )f )) •• •• •• 



D. A distinct short blackish median streak from base 

 No black basal streak . . 



E. A dark brown interrupted discal patch from first 



line to hindmargin 

 No such patch 



F. A black dash above anal angle . . 

 No black supra-anal dash 



G. Black dash broadly suffused with dark fuscous 



,, ,, slender, defined 

 H. Orbicular and reniform very small or obsolete 



,, ,, ,, large 



I. Lower edge of reniform forming a white semi- 

 annular mark 

 Lower edge of reniform not defined 

 J. Orbicular conspicuously pale-margined . . 



,, not ,, ,, . • • . 



K. A conspicuous interrupted dark fuscous dash above 



anal angle . . . . . . . . 



No such dash 

 L. Subterminal with two long teeth below middle 



reaching hindmargin 

 Subterminal without teeth reaching hindmargin . . 

 M, Costa suffused with white 



„ not suffused with white . . 

 N. Markings grey 



,, reddish-brown 

 O. Orbicular oblique, suboval 



,, roundish or obsolete . . 

 P. Reniform marked posteriorly with an oval white 



or yellowish spot . . 

 Eeniform not marked posteriorly with an oval 



white or yellowish spot 

 Q. A sharply-marked dark fuscous triangular mark 



above anal angle . . 

 No such defined mark 

 R. Reniform followed by a dark fuscous spot 



,, nou ,, ,, ,, . • 



S. Forewings brown 



)» f^rcy •• ■• •• •• 



T. Antennas of male shortly bipectinated . . 



,, „ fihform 

 U. Orbicular white 



,, not white .. 



A. 



B. 



25. pictula. 



26. rhodopleura. 

 21. plena. 



C. 



18. disjungens. 

 D. 



B. 

 K. 



19. paracausta. 

 F. 



G. 

 H. 



20. polychroa, 



23. mutans. 

 I. 



J. 



33. composita. 



34. steropastis. 



38. stipata. 



36. 07noplaca. 



41. ustistriga. 

 L. 



M. 

 O. 



35. arachnids. 

 N. 



40. Ugnana. 



39. 1-ubescens. 

 P. 



S. 



29. vitiosa. 



Q. 



37. dotata. 

 R. 



31. tartar ea. 



30. ochthistis. 

 T. 



U. 



24. agorastis. 

 28. pelLitis. 

 W. 



V. 



