56 



TATOCHILA. Bv J. Rr,BEE. 



autodice. T. autodice Hhn. (= demodice Stgr.) (18 b), from the most southerly part of Brazil (Rio Grande do 



Sul), Argentina, Uruguay, Chile and Bolivia (3—4000 m), is differentiated from the following species chiefly 

 by the yellowish red border of the eyes; markings and colouring are stronger on the underside. — The 

 pupa, found by Dr. Seitz in Buenos Aires, is somewhat smaller than the pupa of Pieris hrassicae, yellowish, 

 with a number of minute dark spots, the spiracles appear as larger dark spots and there are similar dots 

 also on the dorsum, the wing-cases are white, with a large dark spot at the discocellulars of the forewing, 

 larger dark spots at the distal margin and numerous minute dark spots on the rest of the wings, the cases 

 of the legs, palpi and ej'es, at well as the thorax, are likewise dark (black-l)rown). Tiie butterfly emerged 

 on 22. February. The larva is apparently not yet known. 



mercedis. T. mercedis Uschsch. {=^ polydice BL, autodice Kirlij, autodice Ehc) (18 b), from Chile, differs from 



(lutudice, in addition to the previously mentioned characteristics, in the purer white upper surface, the weakly 

 marked under surface and the entire absence of the elliptical marking at the costal margin of tlie hindwing 

 beneath. The ?? have a more or less developed streak-shaped black spot at the inner margin of the fore- 

 wing above. 



theodice. T. thcodice Bdo. (^ jjlanchardii B</r.) (18 c), from Patagonia, Peru and Chile, is cream- white above 



in the c/, light yellow in the ?, particularl}' on the hindwing; it is the most distinct species in the genus. — 

 gymnodice. gymnodice Stgr., from Punta Arenas (Tierra del Fuego), is probably a local form. Ground-colour of the cf 

 pure white, the black markings somewhat narrower, underside of the hindwing without saffron-yellow stripes, 

 only the basal part of the costal margin sulphur-yellow and a similarly coloured stripe at the apex. The 

 ? has likewise narrower, but sharper black markings, the arrow-like spots on both wings are sharper and 

 are connected. — Larva: head grey and covered with very fine, short hairs, body grey, with broad yellow 

 subdorsal lines and a lateral row of small orange-red spots, and with raised black dots, sparsely scattered over 

 the whole body, each with a very short, fine hair, ventral legs and underside of the body dark greenish 

 yellow with small black spots, thoracic legs black. Food-plant : Tropeolum. Larva full-fed end of November 

 (A. G. Butler). Flies from December to April. 



argyrodice. T. argyrodicc Stgr. (18 a) is only known in the female. This species is well characterised by the 



grey ground-colouring and the sharply defined tear-shaped yellow spots of the under surface. South coast 

 of Tierra del Fuego (Uschuaia). 



microdice. T. microdicc BL (= xanthodice Mah.), from Chile and Patagonia, is smaller and with less mark- 



macrodicc. ings, also beneath a paler colour than macrodice Stgr. (18c, d), from Bolivia. — sterodice Stgr., from the 



sterodice. east coast of Tierra del Fuego, is differentiated from this latter by a complete absence of yellow markings 



on the under surface, it is also white, almost without markings on the upper surface of the cf, which is 



strongly glossy in the basal half. The ? has not a trace of yellow on the upper surface, whilst the markings 

 arctodice. are similar to those of the ? of microdice. — arctodice Stgr. occurs in Colombia and Ecuador. This form 



is very strongly marked with black, especially in the female; the upper surface of the ?? is principally 



brown-black (with yellow spots). 



pyrrlwmma. T. pyrrhomma spec. nov. (18 d), from Peru (Huancabamba, 3000 m), may be regarded as a distinct 



species on account of several important differences. The eyes are broadly (more broadly than in autodice) 

 edged with fiery red-yellow , the black stripe at the costal margin of the forewing above extends to the 

 base, the black spot on the discocellulars is distinctly smaller, the black marginal and submarginal markings 

 are less developed , the latter almost square , the upper surface of the hindwing entirely without markings 

 and strongly yellowish on account of the yellow colour of the under surface shining through. On the under- 

 side the veins are more broadly white, their margins more broadly grey-black than in microdice, the lower 

 discocellular of the hindwing without white spot, the grey-black stripe in the cell very narrow and forked 

 distally, besides the very sharply defined and broader saffron-yellow stripe at the costal margin there is also 

 a similar one between the submedian and the first median. The under surface of the forewing is white, 

 the veins are very finely black, those in the apex sharply white and very narrowly edged with black, the 

 black spot at the end of the cell is small, the sulphur-yellow colouring of the apex reaches to the second 

 median, and submarginal markings are completely wanting on both ^\^ngs. d' unknown. 



xanthodice. T. xanthodice Luc. (18d), from Venezuela, Colombia, Ecuador, Peru, Bolivia and Argentina, differs 



from microdice and argyrodice on the under surface chiefly in the saffron-yellow stripes betwen the veins of 

 the hindwing, from microdice also in the absence of the white spot on the discocellulars on the underside 

 of the hindwing. On the under surface the apex of the forewing has saffron-yellow stripes and the anterior 

 veins are sharply edged with black to the apex of the cell. 



demodice. J. demodicc BL , from Chile, South Patagonia and Tierra del Fuego, is distinguished from the 



following form by the absence of the arrow-spots on both wings. It must be noticed that according to 



