NOVITATES ZOOLOGICAE XXIII. 1916. 209 



Labelled by Warren " albiplaga Warr." — evidently without consulting his type, 

 which is smaller and duller, without the white median patches of the forewing, and 

 with SO 1 stalked with the other subcostals. 



Subfamily GEOMETELNAE 

 53. Hyposidra apioleuca spec. nov. 



<$, 50 mm. Head and body black. 



Forewing with costa moderately strongly arched towards apex, termen oblique, 

 shallowly concave between SC 5 and M 1 ; dull brown-black, with rather thick, slightly 

 deeper black antemedian and postmedian lines very faintly indicated ; a white apical 

 band, at the apex itself clouded with the ground-colour, especially at costa and 

 between SC 5 and E 1 ; proximal edge of this baud extending from costa 7 or 8 mm. 

 from apex to termen just in front of M 1 , very slightly lunulate inward between the 



veins. Hindwing with termen waved, a slightly more definite excision between 



the radials, the tooth at E 3 noticeable but not large ; without white marking. 



Underside nearly as upper, forewing with slightly more noticeable whitish 

 irroration and clouding on the black parts, hindwing in addition with a slightly 

 paler tone along costa and distal area. 



Medan, Doloc Baros Estate, Sumatra, May. Type in coll. L. B. Prout. 



A NEW ORTHOSTIXIS (Family GEOMETR1DAE). 



By LOUIS B. PROUT, F.E S. 



Orthostixis impura spec. nov. 



? , 40 mm. Head and body concolorous with wings ; tip of palpus blackish. 



Forewing above much less white than in the other species, almost drab-grey ; 

 markings essentially as in cribraria Hb., but with the antemedian row of dots 

 forming a much stronger curve, the indefinite ones on C and SO being placed 

 6-5 mm. from the base, that on M 7 mm. from base (almost at the origin of M 2 ), 

 that on SM 2 scarcely 5 mm. from base ; postmedian row of dots only weakly 



curved ; all these dots small ; those of the termen rather strong. Hindwing 



concolorous, marked almost as in cribraria ; cell-dot and terminal dots strong. 



Underside concolorous, but with the costal and distal areas of the forewing 

 somewhat darkened ; cell-dots strong ; both wings with a weak postmedian and 

 rather stronger terminal series. 



Troödes, Cyprus. July 7, 1911 (J. A. Buckuill). Type in coll, Tring Mus. 



With only a single specimen, and that a ? , it is impossible to decide whether 

 this maybe merely a local form of cribraria ; it was received as " ? calcularia Led." 

 The connective bar between C and SC of the hindwing is present, but exceedingly 

 slender. 



