378 GEOMETRID.E. 



SECT. II. Wings clothed with hair-like scales ; claspers of male * 

 large and exserted. 



A. (Polyphasia). Antennae of male ciliated. 



3724. Larentia truncata, Hiifn. Berl Mag. iv, p. 602. 

 Geometra russata, Schiff. Wien. Verz. p. 113. 

 Phalaena immanata, Haw. Lep. Brit. p. 323. 

 Cidaria subapicaria, Moore, P. Z. S. 1867, p. 663; C. $ S. 



no. 3871. 

 Cidaria calamistrata, Moore, P. Z. S. 1867, p. 662, pi. 33, tig. 6 ; 



C. $ S. no. 3847. 



Cidaria cinereata, Moore, P. Z. S. 1867, p. 662; C. $ S. no. 3850. 

 Polyphasia albiangulata, Warr. P. Z. S. 1893, p. 373. 



The typical form has the head, thorax, and abdomen fuscous 

 and grey. Fore wing with the base grey-brown, with waved 

 subbasal line ; a chestnut antemedial band angled below costa and 

 edged by waved black lines ; the medial band broad and white, with 

 two waved black lines on it, which enclose a black discocellular 

 speck and form an annulus and figure-of-8-shaped mark below the 

 cell, its outer edge oblique from the costa to vein 4, where it is 

 doubly toothed, then inwardly-oblique and strongly toothed to 

 inner margin ; a dentate grey submarginal line, with chestnut 

 between it and the marginal band. Hind wing pale fuscous 

 brown ; underside with cell-speck and irregularly curved line. 



The Himalayan form nearest to the typical European form is 

 calamistrata, which differs in the abdomen and hind wing being white ; 

 cinereata has the whole base of fore wing rufous, the grey of the 

 medial band extending over the whole outer area except the apex 

 and a chestnut submarginal spot on inner margin, the waved lines 

 and edges to the band obsolescent ; in another form the area 

 between end of cell and outer angle is suffused with pale rufous. 



Another set of forms are grey suffused in parts with fuscous, or 

 with the medial band of fore wing clear grey. 



The form immanata, of which typical specimens occur in the 

 N.W. Himalayas, has the medial band dark ; whilst another form 

 has the fore wing uniform rufous, except for the four waved lines, 

 which are whitish ; and another form with the dark band has its 

 white edges connected by a bar above vein 1. 



Subapicaria is a dark form from Sikhim, usually with a 

 prominent white patch on the costa of fore wing beyond the 

 medial band ; the hind wing black-brown ; another form has the 

 cell-spot on a large white patch extending to the costa, and the 

 postmedial line white throughout : the form albiancjulata has a red 

 antemedial band ; an oblique white bar from middle of costa to 

 lower angle of cell ; the postmedial line replaced by a white band 

 angled outwards almost to the margin at vein 4 and acutely in- 

 wards below vein 2, sending a tooth inwards below vein 6, and 

 with a red maculate band, most prominent near costa, beyond it. 



Hob. Nearctic and Palrcarctic regions ; Himalayas : Khasis, 

 :*6-42 millim. 



