Geometridae in the Joicey Collection. 113 



Fore loing opaque brig-lit green, slightly irrorated with 

 white ; costal margin broadly (towards apex narrowly) white 

 with strong red-brown irroration ; antemedian line white, 

 very fine or almost obsolete, sinuous ; a small white mark on 

 DC^; postmedian line white, almost or altoo-ether broken into 

 a thick oblique mark from beyond two-thirds costa, a thick 

 spot between R^ and M\ almost or quite connected with a 

 larger terminal spot between the same veins, and a large spot 

 on hind margin near tornus ; a white subtermiiial line indi- 

 cated by a few anterior dots ; termen somewhat dotted with 

 white at veins ; fringe green, with a white line at base and 

 white spots opposite the veins. ^ 



Hind wing with a white dot on DC^, the postmedian 

 markings reversed, that on hind margin being small, that on 

 costa large, almost reaching apex ; the spot between R^ and 

 M^ smaller than on fore wing, more bracket-shaped ; mid- 

 terminal spot as on fore wing. 



Underside much whiter, with the markings shadowy ; fore 

 wing with costal margin nearly as above, narrowly bordered 

 behind by a bright green shade. 



Bidi, Sarawak, 1907-08 (C. J. Brooks), 4 cJ c? • 



9. Spaniocentra isospania, sp. n. 

 (PI. VII. fig. 22.) 



? .—32 mm. 



Very similar to the forms of megaspilaria $ in wliich the 

 tornal blotch is least darkened (reddish, largely overlaid with 

 lilacine scales). Hind tibia with terminal spurs onlg*. 



Fore wing with the dark irroration at base of costa and 

 underlining the white costal edge stronger ; tornal blotch 

 narrower and shorter (not crossing R'' — in paratype not 

 crossing M^), the narrow purple distal edging, on tlie other 

 hand, better developed, forming small triangular projections 

 on the veins. 



Hind wing with corresponding distinction in the distal 

 edging. 



Jiombay (C. H. Druce). A paratype from the same 

 locality in coll. Brit. iMus. 

 • Except for the difference in the tibial armature I should 



* In my iudication of this as a normal generic character for " both 

 sexes " I was misled by a wrongly determined isospania in the British 

 Museum collection ; both in megaspilaria, Guen., which belongs here by 

 its J armature, and in its race (?) pannosa, Moore, the $ has all four 

 spurs. 



Ann, & Mag. N. Hist. Ser. 8. Vol. xx. 8 



