THECLA. By Dr. M. Dratjdt. 755 



hindwing near the base; only one red eye-spot between the tails, between it and the black anal spot white 

 dusting. Colombia: Rio Aguaca Valley (Fassl). 



Th. aurorina sp. nov. (159 a) is undoubtedly the most magnificent species of this group, above almost aurorbm. 

 like aurora, radiantly light-blue with a large blackish-brown scent-spot filling up nearly the whole cell, and 

 a moderately broad black apex, the margins otherwise very narrow black. Beneath blackish-brown, at the proxi- 

 mal margin of the forewing somewhat lighter, marked like coelicolor (167 b), but the lines beautifully light-blue, 

 on the forewings bent uniformly; on the hindwings, in front of the border, indistinct darker spots in the spaces 

 between; only one red spot of the tail. Colombia: Canon del Tolima; Quindiu Pass (Fas.sl). 



Th. thargelia Burm. (159 a) is closely allied to this group, though greatly deviating. Above plainly thargelia. 

 greyish-brown, the (J with a blue disc, on the hindwing the black marginal line is proximally whitishly bordered 

 towards the anal. Beneath just as dark greyish-brown with whitish postdiscals being proximally finely bordered 

 by black, on the hindwings running straight from before the middle of the costal margin to the lower median 

 vein close in front of the border, in order to form towards the inner-margin a very high, pointed W; the sub- 

 marginals are far off from the border, broader black, proximally white, analwards there are behind it 2 large 

 orange, black-pupilled spots. The marginal line distinct, proximally on the hindwings very fine white. Fringes 

 whitish. Abdomen beneath ochreous-yellow. Argentina. 



Th. cadmus Fldr. (149 c) has, like the following, a much rounder shape of the wings, above in the cadmtis. 

 basal half of a radiant greenish-blue, outside blackish-brown, before the anal angle with the beginnings of a 

 blue marginal line. The $ is a little duller, more silvery. The under surface is red-yellow, again with the same 

 light-blue linear markings which, however, are here much more dentate, particularly on the hindwings. Common 

 in Panama, Colombia, Bolivia, Venezuela, Guiana. 



Th. timaeus Fldr. (149 c) is above bluer, the apex of the forewing somewhat more pointed, the tails timaeus. 

 shorter. Beneath, the forewings have only one bluish-white transverse line, and at the apex there are 1 or 2 

 white dots, the lines on the hindwing are not so dentate, running more uniformly. Colombia, Bolivia. 



Th. petelina Hew. (149 d) not lying before me is placed here. Above very much like the two preceding peielhia. 

 ones. Beneath red-brown, on both wings a white discal streak, behind it 3 white transverse lines; on the hind- 

 wing, besides, a moon-shaped spot near the base, in the centre a light-blue macular band and behind it a broad 

 red-brown, white-bordered band; the spot of the tail and the anal spot brown, proximally bordered by light- 

 yellow. From Costa Rica and Panama. 



22. Havila- Group. 



Th. adamsi Drc. (148 h) is difficult to place; as it is compared with havila by the author, it may adamsi. 

 be placed here, although it has no scent-spot and has 2 tails, for which reason it would have perhaps been better 

 placed to the aegides- or danaus-giou'p (p. 753). Above lustrous greenish-blue, towards the margin more purple; 

 distal margin narrow black. Beneath chocolate-brown with bluish-white lines. Peru. 



Th. havila Hew. (148 b) is not well recognizable from Hewitsos's figure being copied here. The havila. 

 (J is above deep ultramarine-blue, towards the margin of a purple lustre. Scent-spot oblong, double, the part 

 in the cell browner than the blackish part behind it; anterior angle of the hindwing particularly broad black. 

 The under surface is greyish brown with 3, towards the anal angle somewhat convergent lines of a blue scaled 

 striation, those towards the margin broader and more faded; between the median veins of the hindwing a 

 small red-yellow, black-margined eye-spot. Abdom-en beneath orange-yellow. Colombia. 



Th. margaritacea sp. nov. (153 b). Upper surface light greenish-blue, with a mother-of-pearl gloss, margariia- 

 entirely without the black margin, only the fringes blackish grey. The brown scent-spot small, procumbent- '^'^° 



oval, pointed at both ends, behind the cell. Hindwings remarkably long-stretched; in the specimen before 

 me there is only one tail, but there seems to have been a short small tail also at the upper median vein. Under 

 surface of the forewings opalescent greenish-blue with a narrow, blackish-grey costal margin and apex, 

 the place of the scent-spot prominent as a small hunch ; hindwings blackish-grey, sparsel}^ strewn with green, 

 in the cell and towards the proximal margin covered with long hair. A little before the middle of the costal 

 margin, in the subcostal spaee, a bluish-green streak-spot; in front of the border 3 rather closety adjacent, 

 bluish-green silvery lines, indistinct, consisting only of scattered, single scales. Anal lobe as m danaus (149 b), 

 to which it may also be allied, somewhat split. 1 c? from Muzo, Colombia. (Coll. Fassl.) 



Th. celelata Hew. (149 c) is likewise a species difficult to place. Above something like cadmus (149 c), cclelata. 

 beneath brown, marked like havila (148 b), but on each of the wings one whitish line nearer to the base; the 

 costal margin of the forewing is strewn with white, all the white lines broad, somewhat faded and strewn with 

 brown. Described from Brazil. 



