ITHOMEiS; TMETOC^LENE. By J)i'. A. Seitz. 653 



19. (iciius: Itliomi'is But. 



This genus is hardly to he separated from tlie preeeding; the differenees stated (for instapf-e in tlie 

 veins) are very slight, some are also erroneous. The third palpal joint is said to be in Itliumeis coniform, in 

 Nahida knob-shaped. Indeed some Ithomeis exhibit the terminal joint of the j^alpus just as rbtuse as the Ndhhia. 

 Maybe that the forewing of the ItJiomeis is not quite so round a>; it is in the latter. Moreover, we ma\ con- 

 clude a certain alliance already from the mimicry common to both genera. There are about a dozen of foims 

 known, the models of which are generally Ithomiins, a fact being expressed aheady by the name. 



I. aereila *S'w;. (1:27 b). Wings with a dull glassy disc and broad black margins filled up -with red-brown, mril/a. 

 In the foiew ing a wliite obliiiue liand. Peru, Bolivia; not very rare. 



I. astrea Fldr. (127c). Quite similar to nereUrt, but larger, in phice of the white oliliipie band we it^lnu. 

 notice on the forewing an irregular, curved vitreous band. Before me only from Peru, Init described from \'ene- 

 zuela. — In delecta Stich. from South Brazil (Blumenau) or Venezuela the marginal band is said to be more ilr/,r/<i. 

 filled up witli brown and the vitreous spots of the sidiapical band of the forewing are more isolated. — heliconina hrlinniiiia. 

 Bat. (127 c) is an equally coloured species, but smaller, the vitreous areas are reduced and beneath lacteous; 

 from the Amazon and Peru. Tliere are ti'ansitions to typical nstrea, as heUronina varies greatly at any rate, 

 so that for instance the brown filling in the margin of the wings may disappear nearly altogether. The appea- 

 rance of the (75<ren-forms presumably confoiins with the species of Leucothyri-s and Napeogenes flying at the 

 same habitats. — satellites Baf. has the size of helicon ina, but the subapical vitreous liand of the forewings salrllilrs. 

 being regular there is irregular here, being strangulated in the middle, the spots of the forewings almost white; 

 from the Rio Tapajoz. 



I. mimica Bat. (= corinna Stgr.) (127 c). This form is likewise connected with the preceding by niimini. 

 transitions. It is characterized by the lacteous discal spots and the very broad orange distal band. From Co- 

 lombia to Ecuador. It imitates Napeogenes of the coreHW-group, just like the following. 



I. corena Fldr. (127 e) from Colombia differs from the preceding by its larger size, a broader orange rurciui. 

 sjDot at the inner margin of the forewing, and by the orange band of the forewing being broader than that of 

 the hindwing, while in mimica it is just the reverse. Beneath the vitreous spots are almost as transparent as 

 above, scarcely powdered with white. The species varies enormously in size and may drop from the size of 

 an astrea. down as far as to a small heliconina. The orange band may also be lighter yellow or more brownish 

 red, continuous or interrupted. Where it is separated to a large subapical spot, as on the Upper Rio Negro, 

 a resemblance is created with Stalachtis lineata being imitated according to the same model. 



I. stalachtina Bat. As the name implies, this species also resembles a Stalachtis (dvvali) and is imme- si<ii<trhiiiia. 

 diately recognizable by this similarity. Probalily from the Upper Amazon. As the orange colouring is shifted 

 to the liindwing. also a secondary resemblance is produced with the Pierid Disiiiorphia lysinoe (30 d). 



I. aurantiaca Bat. Recognizable by the greater extcjit of the orange colouring on all the wings, other- auriiulinni. 

 wise belonging to the co/ewrz-group. Amazon District. Apparently very rare. It is besides recognizable by 

 its resemblance with Napeogenes ercilla and Hyposcada illinissa. The distribution of colours is about as in 

 Napeog. cyrianassa, but the subapical spots of the forewings are lighter and clearer. 



I. eulema Hew. (127 d). In this species the hindwings are red-brown with a broad black, white-dotted mlniui. 

 distal margin. In the forewing only a broad longitudinal stripe above the innci' margin is yet yellowish-brown, 

 the other part being black with white dots and diffuse spots. Colombia. — imitatrix G. and »S'. (127 c) is the hn'iiniri.r. 

 form of the adjoining (iosta Rica and Panama, in which the forewings are witiiout red-brown, entirely black, 

 marked with but few white small streak-like spots. Both the forms thus approximate a colouring found in 

 the Pieris Charonias eurytele (21 e) in Colombia or CJi. lyceas in Panama or intermedia Scks. from Costa Rica. 

 The resemblance, however, is secondary, created by both having been copied according to the same model. 

 This model is to be found among the nunieious equally coloured Ithomiins to which belong for instance il/e- 

 linaen menatis (33 d), Napeogenes larina (3.5 e), Cerntinia caUi.spila (35 a), ('(illithowia hezia (3(;l)), Ilhoniia 

 plaginota or celemia (37 b, c) and many other butterflies. 



20. (ii'iuis: Tuietogleiio Fldr. 



The species of tJiis genus likewise imitate the Ithomiinae, but only iiyaline species, especially those 

 from the genera Ithomia Hypoleria, Pteronymia etc. They resemble tiie jjatented genus of night-butterflies 

 Brachyglene H.-Schaff., according to which Felder had originally denominated them, only in the sha])e, not 

 in the c;olour. From the species of the preceding genus they are immediately distinguishable by the short trell 

 of the forewing which is little longer than that of the hindwing, while in the It/wmeis it is about as long again. 

 The species fly little and are mostly not common; there are about 5 oi- (i s])e('ies known with a range exten- 

 ding from Mexico to South Brazil and Bolivia. 



