GEOMETRIDiE. — HIPPARCHUS. 177 



sub"-lobose, obtuse : maxiUce elongate. Antenna; bipectinated to the apex in 

 the males, the pectinations slender and elongate, but decreasing gradually in 

 leno'th towards the base and apex ; simple, but pubescent within, in the 

 females : head small, rather broad : thorax slender, velvety : wings slightly 

 expanded during repose, the hinder margins of all rounded, but of the 

 posterior obscurely sinuated towards the apex ; the anterior with two strigae, 

 the posterior with one, corresponding with the hinder one on the anterior : 

 abdomen slender, carinated above, stouter in the females. Larva with 12 legs, 

 slLghtly hairy, elongate, flattened beneath ; head obtuse : pupa enclosed in a 

 dehcate web amongst leaves. 



The rounded wings of this genus, united to their dissimilar tex- 

 ture and hue, the discrepancy in the form and structure of the 

 palpi, and the diversity of the larva, sufficiently indicate the pro- 

 minent characters of this genus; which I have named as above, 

 from its being a section of Treitschke's genus EUopia, in order to 

 prevent the adoption of a new term. 



Sp. 1. fasciaria. Alls riifis,antidsfasci& media saturation strigae albidce utrCique 

 adnata. (Exp. alar. 1 unc. 5 — 7 lin.) 



Ph. Ge. fasciaria. Linne.—E\.. fasciaria. Steph. Catal. part \\. p. 122. No. 6480. 



Clear rufous, the anterior wings with a broad angular central band, bordered on 

 each side with whitish : posterior with a single whitish curved striga, forming, 

 as it were, a continuation of the hinder margin of the fascia of the anterior, 

 the inner edge bordered with a darker red than the rest of the wings : crown 

 of the head and shafts of the antennae whitish. Female rather larger and 

 paler, without the darker shade between the strigae on the anterior wings. 



The form of the band on the anterior wings varies shghtly, the sides being 

 sometimes parallel to each other, at other times both indented. 



Caterpillar rufous, varied with fuscous and white, with the head red : it feeds 

 on the pine :— the imago appears about the middle or end of June. 



Not common : I have occasionally taken a specimen or two in 

 the fir plantation at Birch-wood, and in 1827 I found two in a 

 similar situation near Ripley. " Great Orton."— r. C. Hey sham, 

 Esq. " Flisk, N. "Rr—Rev. J. Fleming. 



Genus CLXXXII.— Hipparchus, Leach. 



Palpi distinct, porrected, hairy, approximating at the apex Uke a beak ; the 

 terminal joint exposed, very distinct, triarticulate ; the basal joint short, 

 slightly robust ; second elongate, attenuated 5 apical lanceolate : maxilla rather 

 short, concealed between the palpi. Antenna; moderately pectinated hi the 

 males, the pectinations incurved and vanishing towards the apex of the 



