Mr. A. G. Butler on a new Gentis of Diurnal Lepidoptera. 49 



latera vesicae euntes pone earn pauUo magis approximati paralleli ad 

 segm. ultimum currunt. Vasa efferentia duo, a testibus inter ductus 

 deferentes ad vesicam seminis ducta, vidisse videor, glandulas 

 accessorias vero nullas. 



Antennce primi paris pauUo ultra marginem scuti pertinent. Pedes 

 quoque extensi ultra marginem scuti porriguntur. Pedes primi et 

 secundi paris ut in $ fere sunt : tertii et quarti paris vero diversi, 

 instrumentis copulatio?iis instructi. Stipes pedum tertii paris art. 1™ 

 transversum habet, postice in angulum obtusum productum ; art. 2' 

 quoque transversus et parum longior est, postice eminentia (capsula 

 seminis) magna, forma fere mammae, ad apicem antice, supra, 

 procursu forma fere digiti, antrorsum et foras directo praeditus. 

 Art. 3^ priori paullo longior est, ad basin illius fere crassitudine, 

 versus apicem angustatus, diametro maxima parum longior. Rami 

 ut in $ fere. In pedibus quarti paris art. P stipitis transversus 

 est, postice subdilatatus, obliquus et bis rotundatus ; art. 2^ crassus, 

 oblongus, in apice et postice rotundatus, in latere anteriore supra pro- 

 cursibus duobus conniventibus, obtusis, anteriore crassiore, infra 

 vero dente armatus. Rami subaequales, inferior, ut in pedibus tertii 

 paris, verticula paullo intra medium in duos articulos divisus. 



Color (exemplorum in spiritu vini asservatorum) albicans, sub- 

 pellucidus. In feminis dorsum trunci distinguitur vittis duabus ad 

 longitudinem ductis violaceis, e maculis parvis ejusdem coloris for- 

 matis, quae vittae ovarii sunt, per cutem dorsi perlucentis. 



[In a note appended to this paper, Prof. Thorell says, with re- 

 gard to his species A. coregoni, that its range is not confined 

 to Sweden. It is found in other parts of Europe, and has pro- 

 bably been confounded, by many of the older authors, with A. 

 foliaceus { = A. delphinus, Miill.) : this is the case, at least, with 

 Hermann, who, in his ' Memoire Apterologique ^ (1804), p. 131, 

 pi. 5. fig. 3, and pi. 6. fig. 11, describes and figures A. coregoni 

 under the name of A. delphinus, although the synonyms (Miil- 

 ler^s and Lofling's) which he cites refer to A. foliaceus,~\ 



XII. — Description of a new Genus of Diurnal Lepidoptera be- 

 longing to the Family Satyridae. By Arthur G. Butler, 

 F.Z.S. 



[Plate IL] 



The species which represents the present genus was described 

 by Mr. Frederick Moore in his ' Catalogue of the Lepidopterous 

 Insects in the Museum of the East India Company,' vol. i, 

 p. 234. n. 503, as a species of Mycalesis ?, for which he pro- 

 posed the generic name of Theope. 



Unfortunately this name had been previously used for a genus 

 of Erycinidae, which was characterized by Prof. Westwood at 

 page 439 of ' The Genera of Diurnal Lepidoptera.' 



Ann. ^ Mag, N, Hist, Ser.3. Fo/.xix. 4 



