AGRIADES C0RID0N. 77 



gives (op. cit.) a series of figures to illustrate the results. He 

 says r " This species produced, through refrigeration, only forms 

 which display a reduction, of the ocellation. It is especially the 

 eye-spots of the hindwings which tend to disappear. In the $ in 

 fig. 2, the eye-spots of the hindwing have nearly, in fig. 8, entirely, 

 disappeared, also, in both, the basal spots of the forewing are 

 wanting. Some transitional examples, which exhibit very clearly the 

 gradual diminution of the ocelli, I have omitted to put into the illus- 

 tration, in order not to exceed the limits of one plate. An insect 

 analogously marked with the artificially produced fig. 3, was taken by 

 Sigmund Hetz, of Wiirtzburg,. on July 1st, 1903, near Dissentis, in 

 Switzerland, and is illustrated in fig. 4. The most extreme aberrant 

 form of my experiment series, is, however, given in fig. 5. In this, 

 not only are all the ocelli wanting, but also the black elements of the 

 marginal markings, only the orange-yellow spots of the latter remain 

 in an extremely elementary condition. The discoidal spot of the fore- 

 wing is represented by a thin black line. The ground colour of the 

 underside is clear white. The specimen, a $ , corresponds with the 

 ab. cinnus, which Hiibner has represented by a 2 specimen, and 

 illustrated in his Europ. Schmett., figs. 830-1. In this £ cinnus of 

 Hubner's, the ground colour of the outer half of the forewing is also 

 strikingly white, and of all the markings only the discoidal spot and 

 the orange lunules of the outer margin remain." 



Time of Appearance. — The species is as distinctly single-brooded 

 in Britain and Central Europe, as its ally A. thetis is double-brooded. 

 Throughout Britain, Northern and Central France, Switzerland, North 

 Italy, Germany, Austria, Hungary, Bulgaria, the Balkan peninsula, 

 Roumania and Russia, the central tableland of Spain, etc., the species 

 is single- brooded, rarely occurring until July, and most abundant from 

 the third week in July until the second week in September, continuous 

 emergences taking place in most seasons and most years over this 

 period, with occasional earlier and later emergences in special seasons, 

 and sometimes being continuously on the wing for from ten to twelve 

 weeks. But over a certain part of South France, extending from 

 Nimes in dept. Gard through Vaucluse, Bouches-du-Rhone, the littoral 

 of Var, and the Alpes-Mari times, and entering Liguria, there appears 

 to be at least a partial, if not very complete, second- brood, the first 

 brood occurring in Gard in early May (Tutt), Vaucluse (H. Brown), 

 Bouches-du-Rhone (Siepi), Var, April-May (Chapman, Tutt), Liguria, 

 May 22nd (Biachier), June lst-13th (Bartel). etc. At Ste. Maxime, 

 Pardigon, etc., the April-May brood is very abundant, all eggs laid 

 there hatching in a few days, and larvae fullfed in July, suggesting a 

 complete second-brood (teste Chapman), but, in the Bouches-du-Rhone, 

 Siepi notes the May brood as a " very partial " one, and details are 

 still wanting as to this brood in this district, whilst the early examples 

 to Pont-du-Gard, etc., appear singly. In the Alpes-Maritimes (Cannes 

 district), Milliere states that it occurs in June and again in September. 

 In the hotter parts of the Basses-Alpes, Digne, etc., the species occurs 

 in June (first week appears to be the earliest record), whilst it is 

 noted at l)igne as late as October 16th, in 1902 (Rowland-Brown). 

 Whether it is double-brooded in Liguria or not is quite open to doubt. 

 At present the earliest date is May 22nd, 1903, at Chiavari (Biachier), 

 but Bartel's elates June, lst-18th, 1901, are no earlier than the 



