Puhl. 30. in. 1917. DIORINA. By Dr. A. Seitz. 665 



Z. timandra Sndrs. (130 g) is somewhat smaller; the hind wings, however, are narrower, especially iimandra. 

 in the anal part, the anal lobe itself is broad black, but above it is a smaJl vermilion band under which 

 there are mostlj' small white dots. Central and South Brazil; Rio de Janeiro, rare. 



Z, licursis F. (= xanthippe Gray, morissei Blch.) (130 g as lycursis) likewise from South Brazil (Rio licursis. 

 Grande do Sul). Recognizable by the red in the small anal band being broken up into two small separa^te appo- 

 site spots of a variable size. 



Z. sylphina Bat. (130 g). An imposing form with broad bands, the small anal band being detached sylphina. 

 from the inner margin of the hindwing, the latter itself, however, as far as the base of the wing hemochrome 

 (= typical sylphina) or yellowish-red (ab tefpsichore Stick.). Ecuador, Peru, Bolivia. — In a ,,subsp.", gratiosa ierpsichore. 

 Stick., likewise occurring in Ecuador, but unknown to me, the red anal spots are said to be ,.^evy large" and ff''"''**"- 

 of a ..violet lustre". 



Z, heliconides Sivns. (= heliconoides Sndrs.) has exactly the size, shape and black bands of sylphina: helieonides. 

 but the red of the small band of the hindwing which is broad and angularh broken does not continue towards 

 the base. Swainson, according tho whose figure I describe the species, states ,, Brazil" as its patria, but no 

 special loca.lity. 



Z. faunus F. (octavius F., chorineus Cr.) (130 g). This finely banded species is easily recognized by fainms. 

 the red anal lobe which is only outside delicately bordered in black being drawn out into a red apex. This does 

 not occur in any other species. Guiana, Amazon, Venezuela and the Isle of Trinidad. — bogota Sndrs. is some- Jiorjofa. 

 what more strongly banded and margined in black, and the hindwing broader black. Colombia and Central 

 America. — Also in the faunus-iornis the red may turn into dark yellow, as probably in all the Zeonia; such 

 specimens are orchestris Stick. orchestris. 



Z. batesii Sndrs. (130 g). This little species is immediately recognizable by the hyaline area of the haiesU. 

 hindwing not being once more divided by a black band, as in all the other Zeonia. From the middle Amazon 

 (Itaituba, Obidos, Rio Tapajoz), rare. 



35. Genus: Dioriiia Mor. 



Very much like the preceding genus, recognizable by the greatly projecting palpi; in some 2$ they 

 are longer than the head. The shape of the wings resembles very much the preceding genus, particularly the 

 long anal margin of the hindwings resembles Zeonia, as well as the sword-like tail-appendage. But the surface of 

 the wings is no more hyaline, but black with a bright blue reflection in the ^,^ and some 2$. Only 2 or 3 

 species are known, but they vary greatly. The imagines visit wet stones and jolaces in the road in the mor- 

 ning, sometimes they are also seen playing round the tops of bushes in the sunshine. Their range extends 

 from Mexico to South Brazil and Bolivia, often being rather common at their habitats. 



D. arcius L. (= butes L., licarsis F., rhetus Cr., cramei'i Sums.) (130 f. misprinted into ancius). This arciu?. 

 butterfly occurs in three forms in its range extending from Mexico to SoutJ^ Brazil and Bolivia : a northern one, 

 thia Mor. (130 f), being distributed all over Mexico and Central America, with very fine hyaline bands and thia. 

 a bright blue gloss of the upper surface. In especially dry and hot localities the bands are narrowed so 

 much that they almost disappear ; they have changed into fin_e lines which make the animal appear quite dif- 

 ferent. This form seems to me to agree with castigatus Stick. (130 f); it is apparently confined to small districts ca.stinafiis 

 of Mexico and Panama; the figured specimen originates from the mountains to the north of Agapulco. — 

 The second form is the southern one, being distributed from Bolivia, Peiu and Brazil to the north as far 

 as the Amazon: it is huanus Sndrs. (130 f), recognizable by its smaller size, a duller blue reflection being huanus. 

 confined almost entirely to the parts of the tail, and by a somewhat undulate distal hyaline band, the proxi- 

 mal one being broader. — The third form is the typical arcius inhabiting the rest of the range, particularly 

 Guiana and the adjoining parts of North Brazil; it is still smaller, with broad bands, the 9 with very thin 

 and long, strongly bent tails. Stichkl founds a new subspecies, amycus, upon a ^ from Santa Catharina with a amijeus. 

 shortened tail-appendage (,,a'most in the shape of dyscnii"). 



D. dysonil Sndrs. (130 e). Above of a magnificently lustrous blue; in the q the bands of the wings rZ(/so»("i. 

 are only seen shining through the blue, showing through from benetith ; in tj^pical dysonii less, but more iu those 

 occurring in the south of the range, Peru and Bolivia, and (according to Stichel) again in Panama. — psecas pseeas. 

 Sndrs. (oldros Frzikst.) (130 e). The $ is beneath almost exactly like the (J, but of somewhat duller colours. 

 Above it has also the marking of the (J, but instead of the deep blackish blue colouring of the patches between 

 the transverse bands we notice a dull dark grej. with a ver\- faint bluish leaden-grey lustre, the transverse bauds 

 themselves being dirty whitish-grey. The butterflies are common at their habitats and often gather in num- 

 bers in the morning at drinking-places. The species is easily distinguishable from periander to which it is 

 not dissimilar, by the more distinct bands of th*^ upper surface and by the more complete, continuous, small 

 red anal band of the hindwing. 



V 84 



