BULLETIN OF THE liliOOKLTK EXT. SOC 



Descriptions of some new species of G-eometridae. 

 By Geo. 1). Hulst. 



Cidaria nocticolata, sp : nor. 



Expands i % inches. Head; front ash gra) - , above lighter. 



Thorax gray, tegulse lined posteriori}- with black. Abdomen brown- 

 ish gray above, light gray below; legs ashen, the fore pair darker on tibiae 

 and tarsi and on the latter striped round about with whitish: hind legs 

 russetty towards ends. 



Fore wings, rather broad, — angulated at-apex, exterior margin much 

 rounded; color light gray, a broad indistinctly black band about % from 

 base becoming obsolete posteriorly. A narrow line, dark, very faint, just 

 within the discal spot which is black prominent. Another band beyond 

 faint and hardly traceable and yet beyond a broad marginal band most 

 distinct at apex and % from apex along outer margin. The inner edge 

 of this band is deeply scolloped and the band is divided with a scolloped 

 line of light ashen. Margin with narrow line of black. 



Hind wings without lines — light towards base, darker faintly russet 

 towards outer edge. Discal spot distinct. 



Beneath much lighter than above. Discal spots apparent; third line 

 on fore wings more distinct, the others less so. An indistinct median line 

 on hind wings. Fringes light. 



3 specimens, Colorado. 



Oidaria semiatrata, sp.nov. 



Expands i% inches. Antennae, head, thorax and abdomen uni- 

 form ash gray. 



Fore wings, much curved at apex which is sharply angulated, round- 

 ed on outer margin and at posterior angle; base black followed by a dark 

 gray band edged with white lines indistinct except along costa; a triangu- 

 lar patch of black along costa formed by dark gray band beyond includ- 

 ing discal spot, joining the first dark gray band at posterior part of wing; 

 beyond another black band suffusing with preceding on inner side, dis- 

 tinct irregular swelling out at middle on outer side; then a light gray sub- 

 marginal band containing row of black spots more distinct towards costa. 

 Discal spot black distinct. 



Hind wing light at base and anterior edge — ashen somewhat broken 

 with white along outer and inner edges. 



4 specimens, Colorado. 



