New Palaearctic Geometridae 481 



behind SC 5 well developed. Hind wing with the postmedian slightly 

 curved, much less bent and sinuate than in propinguata. 



Underside similarly differentiate by the course of the post- 

 median. 



West China, Omei, August 4, 1921, type; August 1, 1921, paratype 

 (G. M. Franck). 



An interesting link between propinguata and corioidea Bastelb. 



6. Calostigia stilpna sp. nov. 



$ , 29 mm. Face smooth, very slightly prominent (as in aqueata 

 Hb., austriacaria H.-Sch., etc.) ; white. Palpus H ; light brown on 

 outer side. Vertex whitish, tinged with brown. Antennal pectinations 

 rather short, slightly fusiform, inclined to be appressed to the shaft. 

 Thorax and abdomen slender ; brownish- white. Fore leg in part dark- 

 irrorated, leaving the ends of the joints whitish. 



Wings strongly glossy. Fore wing rather narrow, triangular, the 

 costal margin and termen little curved ; whitish, rippled with numerous 

 olive-grey wavy lines of varying distinctness, a thin subbasal (at about 

 2 mm.), a thick one proximal to the slightly darkened outer area and 

 especially two rather sharply defined ones bounding the median area 

 the most strongly developed ; median area rather narrow (3 mm. at 

 costa, 2 mm. at hindmargin), its darkening almost inappreciable except 

 against the postmedian line, which is rather more deeply lunulate- 

 dentate than the others but is only a very little bent outward between 

 E 1 and M 2 ; cell-mark strong, slightly elongate ; the bisected bands 

 proximally and distally to the median area as usual rather clear white, 

 especially the distal ; terminal line fine and weak, interrupted at and 

 midway between the veins ; fringe very weakly chequered. 



Hind wing rather strongly elongate (much as in austriacaria) ; 

 whitish, very weakly shaded with grey from base to postmedian line 

 (which is very weakly expressed), a little more strongly in distal area ; 

 cell-dot minute, subobsolete ; the white (very feebly bisected) outer band 

 noticeably broader than on fore wing; terminal line as on fore wing; 

 fringe not chequered. 



Both wings beneath glossy white, quite weakly but about uniformly 

 marked, much as in normal aqueata. 



Digne, received from Staudinger and Bang-Haas. 



Probably near varonaria Vorbr. and Miill.-Eutz(" Schmett. Schweiz.," 

 ii, 63), which is only known to me from the description, but is said to 

 32 , 



