PhN. 30. II. 1911. COSMOSATYRUS. By G. Wbimeb. 233 



the veins remaining glossy white. Beyond the middle a row of brown spots, before the distal margin a row 

 of brown crescents. The habitat is Chile, where the butterfly is locally common in the Cordilleras of the cen- 

 tral proA-inces and on the Argentine borders in January and February, but is difficult to catch on account 

 of its rapid fhght. Only in the early morning it is more easily captured. The altitude at which it occurs 

 is given as between 3000 and 7000 ft. 



A. lamna TJiieme (51 a). Much smaller than the preceding. Forewing above glossy silver-white with lamna. 

 rather broad broA^ai-black border, 6 — 8 mm. in breadth at the apex, 2 mm. at the anal angle. Fringes long 

 and brown. Hindwing entirely brown, towards the base somewhat lighter. Beneath brown, the apex of the 

 forewing and the whole hindwing sprinlded with grey-white atoms and with white longitudinal lines between 

 the veins, on which are placed on the forewing two black dots and on the hindwing a row of 5. Proximally 

 to these on the hindwing several further rows of small dots. From Bolivia. — To a local form of this species 



1 give the niime angusta form. nov. Instead of the broad brown distal margin of the forewing there is here only angusta. 

 a narrow brown marginal hne and before this a second line, only distinct in the anterior half of the 

 wing. At the apex of the costal margin is placed a narrow brown triangle, its shorter side only occupying 



2 mm. of the distal margin. Below this triangle there are 3 brown dots on a silver-white ground, at a dis- 

 tance of about 4 mm. from the distal margin. Fringes brown, spotted with white at the apex. On the under 

 surface both wings have a sharply prominent white marginal line, the veins of the hindwing are likewise 

 white, and the rows of dark dots very distinct. Likewise from Bolivia. 



22. Genus: Cosiuosatyriis Fldr. 



Club of the antenna thin, moderately excised. Palpus thin, twice as long as the head, upper disco- 

 cellular of the forewing short. Distal margin rounded, that of the hindwing slightly undulate. This genus 

 was founded by t elder on leptoneurocles and afterwards extended by Elwes. 



C. leptoneurodes Fldr. (= antarctica Eeed, germainii Reed [explanation of the plate]). Above brown, Uptoncu- 

 forewing in the 3 somewhat dusted with rust-red in the middle, in both sexes an obscure, narrow rust-red ^°'^'^^- 

 submarginal band on the hindwing. On the under surface the forewing is grey-brown, basal and median areas 

 red-brown, before the apex with a round black eye-spot with double white pupil and yellow ring. The hind- 

 wing is ohve-brown to beyond the middle, then follows a dentate whitish yellow band and in the marginal 

 area a row of -5 eye-spots, those in cellules 2, 5 and 6 black with white pupils and yellow and brown rings, 

 the others, in cellules 3 and 4, white with black ring. At the distal margin is placed a narrow white stripe, 

 which is divided into spots by the dark veins. The butterfly is rather common in the mountains of Chile 

 at elevations of 3000 to .5000 ft. Flies at the end of January and in February. — plumbeola Btlr. is a plumbcola. 

 local form of leptoneurodes, only differing in the presence of a bi-curved broAvn line on the underside of the 

 forewing. bordering the red-brown median area. From Port Famine on the Straits of Magellan. — duseni Stgr. duseni. 

 is a quite similar form to plumbeola, the differences according to Elwes being extremely slight; it was taken 

 on the Rio Aysen in South Chile. 



C. chiliensis Guer. (= reedii Btlr.) (51a). Upper surface in the cj unicolorous brown, fringes whitish chiliensis. 

 grey ; in the 5 a round black spot is placed before the apex of the forewing and in its vicinity 4 — 6 small red- 

 yellow spots. On the under surface the forewing is dark red-yellow to beyond the middle, the distal margin 

 broadly grey, the black spot surrounded with ochre-yellow, hindwing grey-brown, marbled with dark brown 

 and white. The butterfly is common in Chile from November to December and ascends from the coa^t to 

 elevations of 4000 ft. — monticolens Btlr. is a form of chiliensis which chiefly differs in having a row of 6 monticolens. 

 black, whitish-bordered spots, placed on a broad brownish white submarginal band on the underside of the 

 hindwing in cellules lb — 6. There are also here on the distal margin large dark brown spots between the 

 entirely white veins. The butterfly is to be found on stony grass-lands in the higher mountain regions of Chile 

 from 4500 to 6000 ft., but is difficult to catch on account of its rapid flight. — williamsianus Btlr. (= Oeneis loiUiam- 

 antarcticus Mah. ^according to Elwes]) is a small form belonging here, in which the median band on the under- ''"""'s. 

 side of the hindwing is curved distally. The light band which follows is broader and instead of the eye-spots 

 of mcmticolens there is here a row of 5 black clots, some of them indistinct. From Port Famine on the Straits 

 of Magellan {antarcticus Mah. was discovered at Santa Cruz, a haven on the east coast of Patagonia at 50° 

 south lat.). — morania Berg is a similar form to luilliaynsianus, but has on the underside of the forewing an moranki. 

 eye-spot with distinct white pupil, and on the hindwing instead of the row of black clots 2 black, white- 

 pupdled ocelh in light yellow rings. The upper surface is unicolorous brown. It was taken in the interior of 

 Patagonia at the source of the Rio Santa Cruz. — As sajama forrn. nov. (50 g) I add a similar form from Bo- sajama. 

 livia, which is perhaps the northern representative of the Chilian chiliensis-monticolens. The upper surface 

 is brown, before the distal margin with a broad light ochre-yellow macular band, composed on the forewing 

 of 6, on the hindwing of 4 spots. The first 3 spots on the forewing are long and narrow, in the 2nd is placed 

 a black spot, the 4th and 5th are broader and long, the 6th also broad, but short. The 4 spots of the hind- 



V 30 



/f'o2 , 4 . 



