290 THE ENTOMOLOGIST. 
sraciliores ; tarsi omnes concolores; ale ampliores; anticarum 
stigma et areola radialis latiores; posticarum area radialis a 
branchiali remota, et in 2 areolas partita.”’ 
Itseems strangethat Marshall, when preparing his Monograph, 
should not have noticed the discrepancy between the descriptions 
of Wesmael and Haliday. The species appears to be scarce, the 
only specimen I have seen being in Morley’s collection, a female 
which was captured by the late Rev. E. M. Blomfield at Guestling 
in 1889. This insect expands 16 mm., and agrees in every par- 
ticular with Haliday’s description, the radial areolet of the hind 
wing being very distinctly geminated by a transverse nervure. 
Z. discolor (Wesmael). (Fig. 3.)—Strange to say the male 
of this species is unknown. Wesmael, the original describer, 
saw only three females; Bignell bred the same sex only; Morley’s 
single specimen is a female, as are also all the many specimens 
I have bred. 
A large and graceful insect, 63 to 8 mm. in length, and 
expanding 15-20 mm. I possess a specimen which is but 5 mm. 
in length and expands only 12 mm.; this case, however, is 
quite exceptional, and may probably be attributed to malnutri- 
tion of the host. ‘The wings are somewhat infumated, the 
apical halves more distinctly so, and noticeably iridescent. 
Marshall very correctly describes the cocoon as “elongate, oval, 
white, and thin, with a medial zone of a denser texture forming 
a white band.’ This medial band is scarcely visible when the 
cocoon is empty. Thecocoon is much thinner and more shining 
than that of Z. infumator, 74 to 11} mm. in length (fig. 10). It 
is constructed underground. 
Bred by me many times from larve of Cabera pusaria from 
July 27th to August 8th, and again from September 27th to 
October 10th ; also frequently from larve of Boarmia repandata 
between May 5th and May 28th; and once from a larva of 
Gonodontis bidentata, August 18th, 1912. 
In October, 1911, I took a small larva of Boarmia repandata, 
which, being kept in a warm cupboard, fed up, and when full 
grown produced a larva of this parasite on January 31st, 1912. 
From this I should judge that in the ordinary way the species 
passes the winter within the body of its host, either as an ovum 
or small larva. 
NEW SPECIES OF GEOMETRIDA FROM FORMOSA. 
By A. E. Wineman, F.E.S. 
Semiothisa kanshireiensis, n. sp. 
@. Pale brown thickly sprinkled with dark brown and blackish; 
subbasal and medial lines blackish, each originating in a black spot on 
the costa, slightly curved, interrupted and edged with orange ; post- 
medial line blackish, indented below costa, wavy towards dorsum, 
