Publ. 6. Xll. 1919. THECLA. By Dr. M. Dratdt. 753 



19. Ematheon-Ciiouj). 



Th. etnatheon Cr. (149 d.e) is an extremely rare species of which only 2 specimens have become ciixiflimn. 

 known hitherto, and most peculiarly from Surinam and Peru, so that it is certainly a very widely distributed 

 animal. Above deep-blue, on the forewing in the disc a purple-violet reflection with a very large black discal 

 spot; distal margin narrowly black. Beneath, the black ground exhibits white and brown irroraticjn. 



Th. busa Godm. d- 8alv. (149 d) is above somewhat similar, deep-blue, in the disc a purple reflection, Uuxn. 

 in which the large black cell-spot is situated; the margin is somewhat broader black. Beneath dark brown 

 with silvery-grey tran.sverse speckles l)eing united to broad areas behind the middle. From Mexico to Costa 

 Rica. 



Th. perpenna Godm. d- Salv. (149e) from Panama is much smaller and of lighter colours with a pfrpvnna. 

 broad blacJv a])cx (if the forewing and a smaller discal spot without the spot at the cell-end. 



Th. undulata Hew. (149 e). Above lustrous green like viriilirans ( 149 f), without tlie scent-sjiot, beneath Kinhdatd. 

 marked abnost just like bnsa, but lighter brown. The 9 is above a little duller and bluei' with broader blackish- 

 brown margins. Lying before me from Colombia and Brazil (Itaituba). 



20. Tolmides-Crouj). 



Th. tohnides FIdr. (149 a) is allied to the preceding groujj and forms the transition to the aegides- iolmides. 

 group. Above lustrous blue with moderately broad black distal margins. In the black anal part of the hindwing 

 we notice the beginnings of a blue marginal line. Beneath greyish-brown with very similar linear markings 

 like those of the following group, in the basal part darker. The nomenclatural type occurs more to the south 

 than the form hyas Godm. <£• Salv. (149 b) from Mexico, Guatemala, Costa Rica and Panama.. The ^ of it has ht/a.<t. 

 above much narrower black margins and is beneath more chestnut-brown, the linear markings are less distinctly 

 prominent. 



Th. danaus FIdr. (149 b) likewise closely approaches to this type, though it might also better form ihnxms. 

 a group for itself. Above more greenish-blue. Beneath blackish-grey witli-bluish-white linear markings: on the 

 forewings only one oblique, bent line behind the cell, the margin somewhat darker; the proximal line of the 

 hindwing is removed inwards in the broad subcostal area, the distal one gets jaggy towards the anal part, the 

 space between it and the somewhat darkened margin is slightly dusted in whitish. The anal lobe is split off 

 like in the fews-group. Colombia, Bolivia, Peru. 



Th. tityrus FIdr. (149b) is above radiantly greenish-blue, the broad black margin shaiply defined. lUynifi. 

 Beneath brown; on the forewing 2 white postdiscal lines, disappearing in the whitish proximal margin, the 

 proximal one forms proximally an acute angle in the submedian area, the distal one is a little broader. Hindwing 

 before and in the centre with 2 white lines, the latter forms at the proximal angle a distinct W. then the costal 

 margin up to the lower median vein is followed by a coherent band of a magnificent deep carmine colour, on 

 both sides bordered by white, next to it between the median veins a black spot; in front of the border yet 

 a fine white line. Lying before me from Colombia, from the Rio Negro. 



Th. appula Heu\ (149 c) which we include here is apparently very rare; it is compared with ddiiau.s oppuJa. 

 by Hewitson, but it differs greatly from all those known, exhibiting also resemblances to phoenissa (152 e) 

 or hnvila (148 b). Before me is also a ^ which is above duller blue than the o which exhibits a small black 

 scent-spot in the upper cell-corner, with broader black margins. Beneath light brown, the space between the 

 two proximal white lines somewhat darkened, behind it extensively dusted in whitish. Colombia, Venezuela 

 and Bolivia. 



2L Aegides-Group. 



Th. aegides FIdr. (148 h) is above blue with rather broad black margins without a sexual spot; uen'idcx. 

 in front of the border of the hindwing is, particularly distinct in an anal direction, a bluish-white line; fi'inges 

 orange-brown; the $ is of somewhat duller colours. The under surface is cinnamon-red with 3 fine l)luish-white 

 transverse lines proceeding on the forewing from somewhat thicker and more purely white costal spots; on the 

 hindwing, close before the border, there is a fourth, similar line; anal lobe black interspersed with cinnamon- 

 brown scales; above it the proximal margin is somewhat sinuous and here there is a thicker white s])ot. Vene- 

 zuela, Colombia. — form, amplitudo Ore. (149 b) has only half as broad black margins and a violet tinge in (iniiililiido. 

 the blue; it is the form flying in Ecuador. — On the contrary, the form flying more to the north in Central 

 America (Mexico and (hiatemala), furina ^ror//;;. t{' Salv. (148 h), has much broader distal nuirgins and a darker, inrhia. 

 more blackish-brown under surface. 



Th. cyda Godm. d- Salv. (148 h) resembles barba (149 a) above by the very broad black distal '*/*'• 

 margins and the lustrous blue colour; beneath it scarcely differs from aegides; both sexes are equally coloured. 

 Costa Rica. 



V 95 



