Publ. n. VI. 1910. PIERELLA. By G. Weymer. 177 



P. iiicanescens Godm. & SuJi\ (4'2 d) only differs from helvina in having the proxinuil border of the incaucs- 

 red area of thii hindwiiig 2 — :} nun. bi'hind the end of the cell, whilst in helvina it runs right across the '^''"*'- 

 tip of the cell. The red colouring is placed more distallj' and posteriorly and encloses two wliite dots; the 

 brown distal margin is narrower. Distributed in Central America: Chontales in Nicaragua; Irazu and Santa 

 Clara Valley in Costa Rica; Chiriqui, Chepo and Bugaba in Panama. Common at the last-named locality. 

 ■ — ocreata (toilju. & Sale, is another form, in which the red area of the hindwing is much reduced. The ocnitln. 

 anterior part (jf it is replaced as far as the median by a large, white, elongate-quadrate spot and thi- 

 wliite dot l)elow the black eye-spot is somewhat larger. The brown distal margin is as liroad as in lid- 

 vinn. This form has a restricted range in Panama, having been found at Calobre and Lion Hill. It is 

 still very rare in collections. — In hymettia Stijv. (4'2 d), a finther form similar to helvimt, the red aiea hijnntim. 

 of the hindwing is still more reduced, being at a distance from the inner margin and bi'iilscn up. In the 

 figured ^ it consists of 3 parts, a spot in the middle of the wing of 12 mm. in length and 6 mm. in 

 breadth, a small round spot in ctllule 4 and a red dot below it in cellule 3. In the $ all the 3 parts 

 are united into a larger spot. At the middle of the costal margin therti is a white sjiot. whicii. however, 

 is only half as large as in ocreata, only extending to vein 0. The ground-colour of this form is above and 

 beneath dark brown, almost black-brown. From the Rio Dagua and Rio San Juan in West Colomljia. 

 Flies in August. 



P. astyoche Krich.s. (= hirynma, DLL) (42 e). (Iround-colom brown, 2 parallel, straight, dark brown nsliiorhr. 

 transverse lines run behind the middh^ across lioth wings from the costal to the inner margin. They en- 

 close no ligliter band above. This is only present on the under surface, the space between the lines being 

 here filled with whitish grey. Forewing with 2 further dark brown lines in the cell and a third on the 

 discocellular, the hindwing with a similar line in the cell. Two black ocelli with white pupil and yellow 

 iris in cellules 5 and 6 near the distal maigiii of the hindwing. Somewhat further removed from the 

 distal margin in cellules 2, 3 and 4 three small round white spots with obsolescent dark bordering. The 

 same markings are present on the under surface, only the ground-colour is somewhat lighter. From Ciuiana 

 and the Amazon. — lucia ]Vfi/ni. (Stett. Ztg. 1885, p. 285) (= astyoche var. albomaculata Stgr.: Exot. Tagf. Incia. 

 p. 219, pi. 77, 1887) (42 e) is a form of astyoche in which instead of the 2 lower small white spots of the 

 hindwing there is a large white spot close to the distal margin, otherwise it is quite similar to astyoche. 

 From Pebas on the Upper Amazon. 



P. lena L. (42 e). The forewing on both surfaces resembles a.styoclie, but the hhidwing shows in the 'f"f'. 

 distal half 4 rows of blue spots mostly with white centres, of which the row next to the distal margin is 

 somewhat obsolescent. Between the 2'"' and 3"' rows near the costal margin 2 black eye-spots with 

 white pupils. In the $ the basal half of the Irindwing is shot with blue. Also the underside of the hind- 

 wing is similar to that of astyoche, except that the eye-spots are larger and removed more proximad and 

 the proximal part of the distal nuirgin is dark brown. Surinam, Guiana, Anuxzon, north-eastern part of 

 Rio de Janeiro. — brasiliensis Fldr. is an unimportant local form of lena, in which the ground-colour of brd^ilioisis. 

 the hindwing is morn blue-grey and tlic bluish white spots are replaced by dirty white ones. From the 

 Rio Negro and the Amazon. — glaucolena Stgr. t. /. (42 e) is a local form in which the blue spots of the ghiia-oIviKi. 

 hindwing are somewhat larger and have no white central dots. Only the spots placed next to the costal 

 margin are somewhat white at the sides. From Mapiri. — amalia Weym. (Stett. Zg. 1885, p. 2S5) (= leu- (imiilia. 

 cospila Styr.: Exot. p. 220, 1887) (42 e) is a form whicli Hfavitson figures in the 2'"' volume of his 

 Exot. Butterflies as a variety of this species. The i)luish white spots of the first and second rows are 

 united in the posterior part of the hindwing into a large white spot, in the anterior part of the wing 

 these 2 rows of spots are absent. The 4"' row close to the distal margin consists of round pure white 

 s])ots, instead of the elongate bluish white ones of typical le7ia. Moreover on the upper surface of the fore- 

 wing there is a distijict white band in the fenmle. From Pebas on the Upper Amazon. 



P. dracontis Hbn. ('? = hyalinus (Jmel.) (43 a) is very similar to lena in the scheme of markings, rfn/coiW/s-. 

 but the sluip(i of the hindwing is different. The distal margin is produced into a strongly projecting angle 

 at the upper median vein. Hence this species forms a transition to the genus Antirrhaea. The 3 rows 

 of blue spots on the hindwing are more brightly coloured than in lena, the 4"' row at the distal margin is 

 absent. From Surinam and the Amazon. — extincta Styr. i. I. A form in which the greater part of the extinrli,. 

 light band on the underside of tlie forewing is wanting, only the part from the inner margin to the lower 

 median vein being present. On the hindwing the half-band of dracontis is divided into 2 parts and the 

 posterior ocellus is extremely small. From Manicore. 



b) Without Iii;lit band. l)Ut witli three stniiglit, ahuost parallel, dark lines on the under surface of both wings. 



P. luna F. (= pallida Godm. & Salv.) (43 a). Both wings grey-brown, the hindwing somewhat hiz/n. 

 darker in the posterior half, both with 3 fine, brown, almost straight transverse lines, of which the one 



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