16 Transactions. — Zoology. 



(4). Thorax and abdomen grey mixed with white and black, 

 collar mixed with reddish-ochreous, and with a transverse 

 blackish line, outer edge of patagia blackish. Legs ochreous- 

 whitish, suffusedly mixed with blackish. Forewings moderately 

 dilated, costa slightly sinuate, apex obtuse, hindmargin waved, 

 rather oblique, rounded beneath ; pale ochreous, towards costa 

 irrorated with dark fuscous and whitish, in female more whitish ; 

 lines slender, dentate, obscure, dark fuscous ; first anteriorly 

 whitish-margined, second posteriorly white-margined on lower 

 half ; spots hardly perceptible ; a slender black sinuate streak 

 from base to middle, margined beneath rather broadly with 

 dark ochreous-brown to first line, terminating beneath a rather 

 broad posteriorly dilated dark ochreous-brown discal patch 

 extending from first to second line, between which and inner 

 margin the ground-colour is irrorated with white ; the discal 

 dark patch is continued beyond second line to hindmargin, 

 where it is dilated and extends over lower f , becoming blackish- 

 fuscous, cut on veins 3 and 4 by light streaks terminating in 

 whitish arrow-headed spots extending into cilia, and containing 

 a double whitish mark on anal angle : cilia pale ochreous mixed 

 with whitish and dark fuscous. Hindwings dark grey mixed 

 with white ; an irregular obscurely marked darker post-median 

 line ; a dark fuscous interrupted hind-marginal line ; cilia whitish 

 mixed with grey. 



Castle Hill ; two specimens, taken by Mr. J. D. Enys. 



20. Mam. polychroa, n. sp. 



Male, female. — 34-36 mm. Head and palpi dark fuscous 

 mixed with grey -whitish. Antennae fuscous, in male moderately 

 pectinated. Thorax with angles subprominent, small anterior, 

 median, and posterior crests ; fuscous irrorated with whitish, 

 with black angulated anterior and sinuate lateral lines. Abdomen 

 grey, and tuft ochreous-whitish, someames reddish-tinged. Legs 

 dark fuscous, irrorated with vrhite. Forewings moderately 

 dilated, costa almost straight, apex obtuse, hindmargin crenu- 

 late or waved, obliquely rounded ; light reddish-fuscous, densely 

 suffusedly irrorated with grey white-tipped scales, discal space 

 darker; a short black median streak from base; a short suffused 

 black very obhque streak from inner margin near base, con- 

 nected with apex of basal streak by a dull green spot ; sometimes 

 a dull green dorsal suffusion before middle; spots outlined first 

 with dull green and then with black ; orbicular rather large, 

 roundish, claviform roundish, incomplete, reniform oblong, 

 posterior half paler and sometimes clear white ; lines slender, 

 dentate, indistinct, black ; subterminal very slender, whitish, 

 anteriorly margined with greenish and partially with black, 

 preceded towards inner margin by a triangular blackish spot, 



