770 THECLA. By Dr. M. Draudt. 



and in the marginal area of the forewings; the markings like in the following species, but more faded and more 

 indistinct. The $ is above biown, in the basal area suffused by violettish-blue. beneath less lilac. Castro 

 (Parana). 



Icmona. Th. leniona Hew. (154 e), described only in the $, is larger, above gi-eyish-brown, distally dark-brown. 



Beneath greyish-brown, on the forewings a postdiscal, straight, white band and two antemarginal rows of 

 white lunular spots, particularly distinct towards the apex. Hindwings with a white undulate median line, at 

 the cell-end in front of it 2 white streak-spots as in cupentus. Marginal area mai-ked like on the forewings; the 

 anal spot and a spot being pushed in more proximally between the median veins black, bordered above by red. 

 Brazil. 



lausus. Th. lausus Cr. (= libanius Cr.) (154 e) undoubtedly has close relations to cambes, for which reason 



we include it here. Above it resembles the said species, of a purer and more extensive milky lilac-blue, the 

 scent-sjiot almost as it is there, but the upper brownish-grey part nearly just as large as the lower one, being 

 deep velvety-black. The $ is duller and almost whitish. Beneath purple-brown with broad, purely white 

 markings, on the hindwings arranged almost as in cambes with a very prominent white trapezoid-spot at the 

 costal angle; the spot of the anal lobe is quite black. Distributed from Nicaragua to the Amazon. 



48. Mycon-Group. 



viycon. Th. mycon Godm. d- Salv. (152 g). Above extremely lustrous ultramarine-blue with a very large, 



cinnamon-brown scent-spot filling up half tlie cell, and a nan-ow black margin. Beneath light greyish-brown 

 with a very fine, proximally brown, distally white discal stripe being broken on the hindwing and forming 

 a W at the proximal margin; in front of the border there are indistinct, small lunular spots, between the median 

 veins a large red spot being proximally more yellow, distally black-pupilled; between this spot and the anal 

 lobe being distally black, then white and proximally reddish-yellow, there is bluish-white dusting on a brown 

 ground. Tiie $ is above brown, towards the proximal margin, particularly on the hindwings, spread over by 



mure.r. a pale blue. From Mexico to Colombia. The southern form from Brazil (Rio Grande), murex Drc. (152 h), 

 is somewhat darker and duller blue with a larger scent-spot and a broad black margin, beneath lighter with 

 a less angled discal stripe. 



49. Thyesta-Group. 



ihyesla. Th. thycsta Hew. (152 g) and its nearest allies exhibit some resemblance to the Jrescj'a-group in the 



marking beneath, but the linear markings arc finer and more streak-like. The shape of the wings and the upper 

 surface is quite different: above metallic indigo-blue with a broad black apex of the forewing and costal margin 

 of the hindwing. The scent-sjiot is double: the part in the cell is black, obliquely outside above it is tlie distal 

 brown part which is not at all reproduced in the badly executed figure. The under surface is greyer than in 

 the figure, the W ouglit to be placed nearer to the proximal angle. Colombia, Amazon. 

 canhtiiis. Th. catiinlus Drc. (154 e) differs from the preceding by almost entirely blacki.sh-brown forewings, 



only the proximal margin is strewn witli blue, also the hindwings are opalescent blue only in the inner-marginal 

 half. The under surface is browner, the markings fainter, placed nearer to the border and without any white 

 dusting before the anal angle. Venezuela, Bolivia. 



pharns. Th. pharus Drc. (152 k) is larger than thyesta, also the scent-spots larger and more intensely pro- 



minent ; the blue has a somewhat greenish tinge and is more extensive than in caninius. The under surface 

 is darker, the lines straighter. Amazon (Para), Bolivia (Songo). 



mdkitio. Th. radiatio Drc. (152 k) has the same scent-spots, but quite black forewings, and on the hindwings 



also only the disc is purple-blue. The under surface is dark-brown, the forewings almost without any markings. 

 At the anal angle the red spot is absent. Amazon. 

 mundilia. Th. munditia Drc. (152 i). In this species only the distal brown part of the scent-spot is present, the 



black spot in the cell-end is visible in an oblique exposure to light, but it does laot contaiii any scent-scales; 

 it is a very small species, the blue as extensive as in caninius, but more slate-blue. Under surface reddish- 

 grey, in the ^^ lighter, with the markings of thycsta (152 g). The $ is above unicolorously brown. British Guiana. 



jactator. Th. jactator Drc. (152 i) entirely re.sembles thyesta (152 g) beneath, but it differs greatly above: 



on the blacki-ih-brown forewings with a radiantly blue proximal part there is at the cell-end a rather large, 

 deep velvety-black scent-spot ; hindwings likewise blue with a black distal margin of about 1 mm width. Paraguay. 



50. Avoca-Group. 



nvoca. Th. avoca Hew. (154 f) is above lustrous blue with a green reflection, dark-brown margins and a 



small, round, red-brown scent-.spot. Beneath red-brown with a violet purple tinge, with a postdiscal white 

 macular band and small, whitish-dusted antemarginal spots of the forewings. Hindwing in the larger anal 



