PuW. 3. IJ. 19-20. THECLA. By Dr. M. Drat'DT. 785 



with a broader black margin, above and beneath absent white costal-marginal diffuse spots vary greatly, 

 if larger series are to be looked at. It lies before me from the Amazon and Colombia. 



Th. orocana Drc. (15()b), however, is undoubtedly a different syjecies; it has above all no tail, but oronma. 

 an extended, inwardly curved anal lobe of the hindwing, as some species of the nmyntor-gvovi'g (p. 762). The 

 colour above is a lighter, radiant greenish-blue, the apex of the forewing is very Inxiad black; whereas in orohiit 

 and ornhiana the blue colour of the hind\\'ing above the upper radial vein extends constantly in the shape of 

 a bow into the bro«n costal margin, it runs here below the said vein straight on to the distal margin. Beneath 

 there is little difference: the blue discal stripe of the forewing is absent, on the hindwings there are at the anal 

 angle but very sparse golden-green scales. Peru, Colomljia (Canon del Tnlima). 



78. Hyacinthus-Crou]). 



Th. hyacinthus C'r. (156 b) is above sky-blue with a narrow black margin; beneath the forewings Jijiannilntx 

 are greenish-bhie with a narrow black margin and two bands before the distal margin, the hindwings exhibit 

 a yellowish-l)rownish band from the middle of the jiroximal margin to the costal angle, broadly bordered in 

 black, and black sjtots before the distal margin. West Indies. 



Th. pholeus Cr. (= philanthus Stoll) (156b) is a little similar, above peacock-blue, the V brown; iilmUnH. 

 f)n the under siu'face the J is greenish-blue, the $ yellowish-grey with black bands and a yellowish-brownish 

 stripe on the hindwings as in the preceding. — Whereas the northern specimens from Surinam and Cayenne 

 always exhibit some small, metallic greenish-blue spots in the median black band of the hindwing, the southern 

 specimens from Brazil and Colombia are always without them, they may therefore be denominated meridio- nicridionii- 

 nalis fonn. nor. (156 b). — At l)oth the habitats there occur small r?,^ with a brown ground-colour above like . ,.''■•' 



the V;': teminalis form. nov. 



Th. selina Heir. (15(i b) camiot be justly called a distinct species, as long as a (J fitting to it has not sclimi. 

 been ascertained. The $ does not differ from that of pholeus above, but beneath the forewings are unicolorously 

 brown with 2 darker submarginal bands; on the hindwings the costal margin next to the base is broad red- 

 brown, otherwise as in pholeus. The most positive assertion for the Ciualification of the species is the fact 

 that in the black median band there are always greenish-blue spots which are forever absent in southern speci- 

 mens of pholeus. Brazil, Ecuador. 



Th. nautes Cr. (153 b) is larger, above darker with a small, darkbrown scent-spot and broadly darkened iKiutc^. 

 veins. The under surface is very characteristic and unmistakable. In the ^J the proximal half of the forewing 

 is peacock-blue, but not in the $ which is also above brown. Ecuador, Amazon. 



Th. elis Cr. (156e) preponderanfly differs by its under surface; the forewing exhibits in the disc c/i.s-. 

 3 or 4 black, hlue-pujiilled eye-spots standing below each other; on the hindwing there is at the costal nuxrgin 

 nearer to the base another black, blue-pupilled eye-spot; the yellowish-grey longitudinal stripe extends towards 

 the costal angle, in ii'iutes between the radial veins to the distal margin. Brazil. 



Th. bactriana Hew. (156 c) we insert here on account of the under surface resembling somewhat burlrimia. 

 j)holeus, though it is otherwise quite isolated. Above light-blue with a broadly black apex and a large, light- 

 ringed scent-spot. Beneath yellowish-brownish with similar spots and bands as pholeus. Amazon. 



79. Enipusa-Group. 



Th, enipusa Heir. {= tympania Heir., bethulia Hew., halciones Rtlr.) (156 c) is above deep blue, rnipmta. 

 in the larger apical half black. The under surface is light grey with fine brown postdiscal lines, distally bor- 

 dered by white, proximally by a very fine orange-yellow, on the hindwing beginning with an outwardly displaced 

 streak-spot at the costa; c^uite indistinct, small, submarginal lunular spots are only visible on the hindwing 

 by being on both sides dusted in Avhite; at the anal angle there is a small black spot, being above bordered 

 at first by white, then by orange; proximally follows a white-dusted part, then between the median veins again 

 an orange, small sjiot. Distributed from Mexico to the Amazon and Bolivia. 



Th. purpuriticus Drc. (156 c) is above just the same, beneath darker, on the hindwings between the imrimriii- 

 median veins before the l)order much more extensively dusted by orange, the submarginal shades placed nearer ""^ 



to the postdiscal and more proximally. Colombia. 



Th. tarena Hew. (156 c) is most similar, above hardly different, but the costal margin of Ihe hindwing tunna. 

 is broadly brown. The under surface ist more biTn\n, the lines as in empusii. but more indistinct, the red spot 

 of the tail placed more proximally. Guiana. 



Th. gentiana Drc. (15() d) differs above from titremi by a xcvy large, black, oval scent-spot being proxi- (/niliana. 

 nuxlly surrounded by slate-blue scales. Beneath like the preceding, tlie lines still weaker and a little straighter, 

 the red spot removed more towards the margin, t'olombia. 



V 99 



