AUGIADES SYLVANUS. 145 



base and just reaching out to the eyes, are long, and form the free 

 maxilla-case already noted, which is received into a slight hollow in 

 front of the 5th and 6th abdominal segments, and is supported by a 

 pointed extension of the wing apices. All these appendages are 

 transversely striated, but, for the most part, these striations are very 

 smoothed down ; the free portion of the maxilla is, however, quite 

 rough with very fine circular ridges (like a rat-tail file). The wings 

 are very smooth though really wrinkled like the other appendages, 

 and the veins and Poulton's line (marginal vein) are very distinct 

 as raised lines (Chapman). 



Time of appearance. — The species is single-brooded, appearing on 

 the wing in most seasons, continuously, for six to eight weeks, its 

 earliest appearance depending largely on the season, and may be as 

 early as May (April in 1893) and as late as July. May examples are 

 usually rare, from mid- June to end of July is the usual period in 

 Britain. Abroad, the time of appearance varies according to altitude 

 and latitude — at Locarno in April and May ; at Broussa it appears in 

 May ; from June to August, at 900m. elevation, in Eoumania ; 

 from the end of May to mid- July in Anhalt (Gillmer) ; and mid- 

 June to end of July (once on May 15th) in the Baltic Provinces 

 (Nolcken) ; we usually find it worn in the Alps of France, Italy and 

 Switzerland from 4000ft. -6000ft. at the end of July and early August. 

 There may, in some seasons, be an occasional specimen of a second brood, 

 but even this is very doubtful, and we suspect greatly all general records of 

 double-broodedness, e.g., at Salzburg, May 7th- June 23rd and July 25th- 

 September 12th (Fritsch). The following dates will illustrate the varia- 

 tion according to season and place. Continental records : June 21st, 

 1871, very abundant in Jersey (Luff) ; June 24th- July 13th, 1883., at 

 Carlsbad (Becher) ; June 14th-16th, and again July 19th-23rd, 1890, 

 at Tancarville (Leech) ; May 22nd, 1891, in Corfu ; June 4th, 1891, at 

 Malamocco (de la Garde) ; abundant in the Vallon des Fleurs, Nice, July 

 1st, 1893 (Bromilow) ; July 28th-August 8th, 1894, at Courmayeur ; 

 July 25th-26th, 1896, at ' Gresy-sur-Aix ; June 18th-26th, 1897, 

 at Fontainebleau ; July 28th-August 1st, 1897, at St. Michel de Mauri- 

 enne ; August 10th-19th, 1897, at Susa, scarce and apparently over 

 (Tutt) ; June 20th-July 2nd, 1898, at Saeterstoen (Chapman) ; one 

 specimen worn, early August, 1898, at Pre St. Didier (Tutt) ; June 

 21st to end of month, 1899, at Susa (Brown) ; July lst-12th, 1899, at 

 Fusio ; July 22nd-31st, 1900, at Guarda (Chapman) ; June 26th-28th,, 

 1900, at Berchtesgaden ; June 29th-July 2nd, 1900, at Buda-Pesth 

 (Lang) ; August lst-3rd, 1900, at Larche ; August 18th-24th, 1900, at 

 Gresy-sur-Aix (Tutt) ; June 23rd-24th, 1901, at Mont Seny (teste 

 Nicholl) ; June 26th-30th, 1901, distributed throughout the Foret 

 d'Arques and occurring abundantly (Moore) ; July 18th-20th, 1901, at, 

 Tragacete ; July 28th, 1901, at Albarracin (Chapman) ; July 30th, 

 etc., 1901, abundant but worn at Torre Pellice (Tutt) ; May 29th- 

 July 4th, 1902, at Hyeres (Powell) ; July 5th-30th, 1902, at Villars. 

 (Moss) ; July 12th, 1902, at Aigle (Sheldon) ; July 25th, 1902, at Gresy- 

 sur-Aix ; July 29th-31st, 1902, at Annecy (Tutt) ; June 26th-July 1st,. 

 1902, at St. Georges (Wheeler) ; April 20th, 1903, a single newly-emerged 

 specimen at Locarno (Tutt) ; July 2nd, 1903, at Entrevaux (Pow T ell) ;: 

 July 26th, 1903, very large 2 s at Vesubie, with T. acteon (Rowland- 

 Brown) ; July 27th, 1903, at Roche, near Aigle ; July 28th and August 



