4(3 



This is quite a homogeneous group, if, as should plainly be done, we 

 . sclude Operhoptera {Chebnatobia) from it, which, though included in il by 

 M. Guenee, should. I think, form the type of an equivalent group. 



As regards the larval and pupal characters, we are, from our imperfect 

 knowledge, not in a position to lay down any characters peculiar to the group. 

 Gruene'e gives the following characters: " Larvae more or less elongated, with- 

 out any eminence; slightly or not al all attenuated, cylindrical, or distinctly 

 flattened; mostly green, with distinct lines; head generally small and globu- 

 lar; living sometimes exposed, sometimes contained in a folded leaf, on trees 

 and low plants. Pupae contained in cocoons.'' 



As regards the sequence of genera, I have placed Eupithecia first and 

 lowest, in accordance with the plan of arrangement of the species. 



Synopsis of the Genera. • 



Species small ; fore wings long aud narrow ; hind wings short, inner edge shorter than the 



outer edge Eupithecia. 



Species large ; hind wings large ; costa straighter and palpi shorter than in Petrophora . . . . Glaucopteryx. 



Species smaller than in Glaucopteryx; palpi long and slender; wings with many lines Plemyria. 



Wings short and broad ; front of head very full aud convex Kpirrita. 



Differs from Petrophora in venation; first three intercostal venules much shorter than in 



Petrophora Tin in. 



Wings large and squarish, oblong; apex very obtuse; fore wings with smoky bauds Hydriomena. 



Fore wings falcate ; head narrow ; palpi long; hind wings shorter than in Glaucopteryx . . . Petrophora. 



Antenna' pectinated or ciliated ; outer edge of hind wings sometimes bent Ochyria. 



Antenna? always simple, scarcely ciliated; hind wings not bent, sometimes scalloped ; spe- 

 cies often black, with white lines aud spots Rheumapiera. 



Head broad : vertex tufted ; palpi short ; fore wings broad; hind wings produced Auticlea. 



Fore wings largo; bind wings small, scalloped; both wings with numerous wavy lines ...Phibalapteryx. 



Palpi short; wings with distinct white and dark zigzag lines; hind wings cared and 



tufted Ili/driit. 



Wings acute ; palpi long ; hind wings eared, scalloped Scotosia. 



Palpi long ; hind wings with very deep scallops Triphosa. 



Hind wings very small, with a lobe in the male Lobophora. 



Fore wings narrow, acute, subfalcate ; hind wings narrow Carsia. 



Species entirely black, with a white hand ; wings short, broad, much rounded at the apex. Jiaptria. 



Hind tibiae swollen ; tarsi very short; otherwise like Baplria but with metallic scales Haliommata. 



Antenna' heavily ciliated ; palpi very short ; fore wings large; hind wings small Beteroplu lp*. 



Fore tibia> armed with spines; fore wings very long and narrow Lithostege. 



EUPITHECIA Curtis. Plate 1, fig 1.* 



Chlorocystis, Tephroclystia, Dyscymatoge, Tarachia, Leucocora, Arcyonia, Eucymatogc Hiibu., Verz., 323-324, 



1818. 

 Eupithecia Curt., Br. Ins., pi. 04, 1823-40. 

 Larentia Treits. (in part), Schm. Eur., vi, 75, 1828. 

 Eupithecia Steph., Norn. Br. Ius., 44, 1829. 

 Larentia Dup. (in part), Leo. France, viii (v), :*,58, 1830. 



* The figures referred to in connection with the genera represent the venation. 



