AND THEIR TRANSFORMATIONS. 3 



PSODOS, Treitschke. 

 The wings are broad and rounded ; the antennae simple in both sexes ; the spiral tongue long and slender ; the 

 palpi small, porreeted, and densely clothed with long hairs, the terminal joint being very minute. Mr. Curtis 

 considers this genus as forming the connecting link between this family and the Noctuidae, by means of the 

 genus Brepha ; but Boisduval places it at the end of the Gcometridaj, regarding it as forming the passage to 

 the Pyralidse by means of tlie genus Ilercyna. The transformations are, unfortunately, unknown. The species 

 are Alpine. Boisduval separates Equestrata, under the generic name of Torula, on account of the difference in 

 the markings and habit of the wings. 



Species 1. — Psodos thepidaria''. — (Plate LVII., Fig. 1.) — Expanse, J. inch. Blackish brown ; fore wings 

 rather narrow, sooty black at base, with a very short, almost obsolete black line ; a nearly central, oblique, dark 

 fascia, with crenated edges ; dilated towards the costa, inclosing a black dot ; beyond this, in certain lights, is to 

 be seen a broad, nearly obsolete striga, of a pale blackish hue, terminating in a black costal spot : hind wings 

 nearly concolorous, blackish brown, but with indications of spots and strigaa, as in the fore ones ; apical margin of 

 all the vrings spotted with black. Very rare. Found, at the end of June and beginning of July, on the summit 

 of the mountains of Scotland. 



■ SvNoNTME. — Geametra trcpidaria, Hubner ; Haworth ; Stephens ; Curtis ; Wood, Ind. Eat. fig. 449. 



Species 2. — Psodos alpinata''. — (Plate LVII., Fig. 2.) — Expanse one inch. All the wings brown black, 

 with a large, irregularly oval patch of orange beyond the middle of each wing. Probably not truly British. 

 Two specimens in Mr. Curtis's collection are stated by Haworth to have been taken at Hoi wood, (Holywell,) near 

 Bromley, in Kent, by Mr. Plastead. It is found on the Alps in July. 



'■ Synonymes.— GeoTTie/ro alpinata, Wien. Vera.; Treitschke ; Geome<ro eyues/ra/a, Fabricius; Curtis, Brit. Eut. pi. 42'1 ; Ha- 



Hiibner; Stephens; Wood, fijr. 450. worth. 



Geometra equesiraria, Esper; Boisduval. 



SPERANZA, Curtis. 

 The antenna are bipectinated in the males ; the pectinations rather short, and scarcely extending to the apex ; 

 the spiral tongue long and slender ; the palpi porreeted, thickly clothed with scales, not concealing the terminal 

 joint, which is distinct, small, and oval. The body is slender ; the wings somewhat triangular ; the fore ones 

 with a tubercle on the upper side, near the base. The caterpillars are slender, lineated, and smooth ; resting, 

 extended at full length along the branches ; the perfect insects fly by day, and when at rest carry their wings erect. 



Species 1.— Spebanza britnneatac.— (Plate LVII., Fig. 3.)— Expanse, 10 or 11 Unes. Fore wings in the 

 male dirty orange, with four very indistinct, dusky, sinuated, transverse strigse, and a small duskyspot in the middle; 

 hind wings paler, with two very obscure dusky strigBB, and a central spot. The female dull orange, with the -/.s'. 

 strigffi broader and more distinct. Found, about the middle of July, "flying in the beat of the day over high 

 heath which covers the hiUocks amongst the pine-trees in Blackwood, near the shores of Loch iiannoch." — 

 (Curtis, loc. cit.) 



' Syhosymes.— Geomrtroir«nnea(a,Thuiiberg.; Stephens; Wood, , Speranza syharia, Curtis, Brit. Ent. pL 225. 

 Eg. 451. 1 ? £«pis(er)a (Bdv.) quinqimriii, Hiib. (pinetaiia HDb. $ ). 



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