THECLA. By Dr. M. DRAimT. 765 



exhibiting a deeper purple-blue and an oval, somewhat smaller scent spot. Beneath the ground-colour is of 

 a somewhat deeper tinge, the two small white spots on the forewing bordering on the basal red are absent, 

 and the hindwings exhibit a second red spot at the inner-marginal base. Peru. 



Th. minyia Hew. (150 h) is above lustrous blue, of a somewhat greenish tinge, the apical half blackish- minyia. 

 brown, in it lies the small round greyish-brown scent-spot. The under surface is ochreous-browii, the bases 

 of the wings red, on the forewings bordered by two, on the hindwings by one white spot, the former two distally, 

 the latter proximally bordered by black; the forewings exhibit yet a white oblique band at the cell-end, the 

 hindwing at the proximal margin the beginnings of a white undulate line, between it and the black anal angle 

 there is some greenish or bluish-white dusting. French Guiana to the Amazon. 



Th. porthura Drc. (150 h) is above deeper ultramarine blue, the scent-spot is placed in the dark purple- xjorthura. 

 blue. The under surface is more ochreous-yellow on the hindwings, the forewings are without the two small 

 white basal spots, but on the hindwing a black, bluish-white-ringed eye-spot borders on the basal red, the black, 

 distally white postdiscal extends as far as to the centre of the wing, and mostly there is even yet a small 

 white spot at the costal margin, the anal angle is more extensively green. Panama to Colombia. 



Th. rocena Hew. (150 k a gemma-'^) has no scent-spot, but such a broad black costal margin that the mceyia. 

 deep violettish-blue remains confined to the basal inner-marginal half of the forewing. Beneath similarly marked 

 as the preceding, but the ground more greyish-brown. Below the cell of the forewing is a large black spot; 

 behind the cell, between the lower radial and lower median veins, there is a white arcuate line; the anal angle 

 of the hindwing extensively strewn with metallic green, between the median veins a jet-black spot bordered 

 above by orange. Colombia to the Amazon. 



Th. fessa MscTilr. described only according to 1 $, seems to me to belong here. Above dark-bro\^Ti, /essa. 

 towards the base with a bluish-grey tinge. Under surface yellowish-brown, marked almost like atena (150 h), 

 but the forewings without any marking, the hindwing with the costal-marginal eye-spot of amplus (150 k) 

 and its allies, but without any basal red; farther outside there is another smaller white clot bordered distally 

 by black; postdiscally, towards the proximal margin, a white, towards the base black undulate line, towards 

 the margin whitish-blue dusting, at the anal angle a black spot being yellow towards the base. Surinam. Fore- 

 ^\^ngs 15 mm long. 



Th. atena Heiv. (150 h) is above brilliant-blue, towards the margin suffused in purple with a round, atena. 

 brownish-grey scent-spot in the upper cell-corner, and a broad black apex. Beneath like the preceding, but 

 on the forewing a white oblique band at the cell-end, proximally bordered by black, forming on the lower median 

 vein an acute angle projecting outside. The markings of the hindwings are bluish white, analwards very much 

 metallic green dusting. Guatemala to the Amazon. 



Th. geba Hew. (150 h) resembles the preceding above, perhaps of a slightly greener tinge, beneath geba. 

 darker brown, the discal band of the hindwing more developed and especially behind the middle of the cell 

 moved farther towards the base, all the markings a little more intense, the bluish-white still deeper blue. Before 

 me from Bolivia and Colombia. 



Th. melleus Drc. (150 i) entirely resembles atejia beneath, but above the blue is much less lustrous melleus. 

 and strongly reduced by the apex and also the distal margin of the hindwing being much broader black. The 

 scent-spot is the same. Colombia. 



Th. floregs Drc. (150 i) is likewise very closely allied to the preceding, on the forewings lustrous and flore^. i,j^I^I^ 

 extensively blue as atena, on the hindwings lighter blue. Beneath the ground-colour is darker, more leaden- 

 coloured, towards the margin with a coppery lustre; the white line of the hindwing runs more uniformly and 

 is less broken. Amazon (Tapajos). 



Th. ravus Drc. (150 i) is compared with minyia (150 h) by the author, above with a smaller, rounder ravus. 

 scent-spot and a lighter, reduced blue. The under surface is brighter red-brown, the white spots bordering 

 the basal-red are absent, so is the red colour on the hindwings, but the costal-marginal eye-spot is present instead. 

 Amazon. 



Th. color Drc. (150 i) resembles somewhat athymhra above, it is of a more brilliant blue than the color. 

 latter, without any scent-scales, but with a dark spot in the distal half of the cell. Beneath lighter, almost without 

 any basal red, only faintly tinged lilac-reddish, on the forewings with a postdical row of moon-spots, the markings 

 only feebly expressed. Guiana. 



Th. sista Heiv. (151 a) initiates a special subordinate group of species resembling each other very s(>fa. 

 much, with a much more slender structure and more delicate wings, partly almost diaphanous. Above brilliant 

 blue with broad black margins and a quite uncommonly large scent-spot of a brown colom\ being extended 

 from the distal half of the cell almost to the proximal half of the radial and median veins. Beneath all these species 

 are indiscriminately almost of the same colour and marking, grey with bluish-white transverse lines, on the 

 hindwings broken, forming a W towards the anal part, anal margin lustrous metallic grass-green, in it two 

 black spots bordered above by yellow, at the base of the costal margin of the hindwing an isolated white spot. 

 Guiana, Colombia, Brazil. 



