CHEIMAS; OXEOSOHISTUS. By G. Weymbk. 271 



is added a fifth eye-spot. In the $ the mai'kings of the underside are also present above and on the hindwng 

 the white spot is prolonged to the costa. Bolivia (Illimani and Yungas de la Paz). 



53. Genus: dieiiuas TMeme. 



Apex of the fore wing rectangular, margin of the hindwing slightly undulate. Above with large, slightly 

 glossy, yello'u'ish or bluish white spot on^the hindwing. Beneath almost Avithout markings, red-brown. Only 

 one species, published as Oxeoschisfus. 



Ch. opalinus Stgr. (58 d). The large silver-grey spot of the hindwing with variously coloured reflections, opalinus. 

 According to the angle of light it has a golden yellow or a light blue sheen. The under surface is entirely red- 

 brown vrith the margin but little darker. Hindwing with dark brown transverse lines, a yellow median dot 

 and a submarguial row of yellow dots. Venezuela. — spoh'atus StgrS{5S d) is a form of opalinus with the spolkUus. 

 yellow dots on the miderside of the hindwing entirely absent and the spot on the upperside less white. Like- 

 wise from Venezuela. 



54. Genus : Oxeo^^chistiis Btlr. 



After the species of the preceding genera Mygona, Proboscis, Diorista and Cheimas, which Butler had 

 united -v^-ith O.veoschistus, have been removed, this genus only contains quite similar species, which agree in 

 the following points: Palpus thinly haired, its terminal joint pointed and projecting for about the length 

 of the head. Apex of the foreA^ing roimded and not distally produced. Distal margin of the hindwing more 

 or less strongly undulate. Most of the species have on the upperside a broad brick-coloured red-yellow sub- 

 marginal band which bears a row of black spots. They occur in the high mountains from Guatemala to Bolivia. 



0. pronax Hew. (58 d). On the upperside the band is curved basewards at the costal margin of the jyronax. L^ 

 forewing, by which the species may be known. Beneath the forewing is as above, but the band whitish at the 

 costal margin, the hindwing red-browai with 2 rows of yellowish white spots before the margin, which are 

 bisected by the black veins. Between them some very small eye-spots. Peru and Bolivia. 



0. duplex Godm. (58 d). The band is distally sharply dentate on the hindwing and at the distal duplex. _ 

 margin there is a row of red-yellow crescents. The black-brown spots on the band are very large. On the 

 under surface the apex of the fore-vving is ferruginous, the band anteriorly white. Hindwing red-brown, the 

 band bordered -with white at both sides, a white line is placed in the basal area and the black spots have 

 white pupils. Bolivia, Peru. 



0. simplex Btlr. (58 e). The band is anteriorly narrow and posteriorly broad and at the inner margin simplex. 

 of the hindwing extends to the distal margin. The dark spots are scarcely half as large as in du-plex. 

 The figure of the under surface (pi. 58 e) represents a $. In the (^ the white median stripe of the hindwing 

 is only half as broad. — According to Fas.sl the egg is the same size as that of Satyrus briseis, is spherical 

 and has a mother-of-pearl gloss on the surface. The species is distributed in Colombia. Fassl found it already 

 at 1200 m., but also at altitudes of 2500 m. According to Godman it also occurs in Ecuador. 



0. puerta Westw. (58 d) differs from simplex in that the red-yellow band decreases less in breadth pucrta. 

 anteriorly, but on the hindwing does not extend to the distal margin. On the other hand the brown distal 

 border reaches the anal angle. The brown spots vary in number and size. Hewitson gives the number of 

 spots on the forewing as 4, on the hindwing as 7, in the example figured only a few are present. Beneath 

 the brown spots on the forewing are very small, the hindwing similar to that of simplex. Colombia, Vene- 

 zuela, Costa Rica. — submaculatus Btlr. (58 e) is a form of p>uerta in which the red-yellow band is especially submacula- 

 broad on the hindwing and as in simplex extends to the anal angle, but on the forewing becomes very '"*'• 

 narrow and is anteriorly broken up into small spots. Instead of the brown spots there are on the hindwing 

 only a few dots at the anal angle, on the forewing they are entirely absent. Beneath the proximal part of the 

 forewing is very dark. From Costa Rica. — pervius Thieme is a similar form to submaculatus, but considerably pervius. 

 larger, with the band on the forewing broader and not broken up into spots. Prom the province of Cauca 

 in Colombia. 



0. isolda Thiem,e may be recognized by the dark mahogany-red band, which is the same shape as in isolda. 

 jmerla, thus not touching the distal margin of the hindwing. The spots placed on this band are very small 

 or absent, especially on the forewing. The under surface is similar to that of puerta, but the markings are 

 duUer, the ocelli .smaller and not bordered with yellow. In the $ the colouring of the upper surface is somewhat 

 lighter. Ecuador (Mirador) (Haensch). 



