Publ. -21. VI. 1910. PIERELLA. By G. Weymee. 177 



P. incanescens Godm. & Salv. (42 d) only differs from helvina in having the proximal border of the incanes- 

 red area of the liindwing 2 — 3 mm. behind the end of the cell, whilst in helvi7ia it runs right across the ''®"'*' 

 tip of the cell. The red colouring is placed more distally and posteriorly and encloses two white dots; the 

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

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

 — • ocreata Godm. & Salv. is another form, in which the red area of the hindwing is much reduced. The ocrecda. 

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

 white dot below the black eye-spot is somewhat larger. The brown distal margin is as broad as in hel- 

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

 still very rare in collections. — lu hymettia Stgr. (42 d), a further form similar to helvina, the red area hyvieilia. 

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

 figiured (J 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 cellule 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 there is a white spot, which, however, 

 is only half as large as in ocreata, only extending to vein 6. 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 Colombia. 

 Flies in August. 



P. astyoche Erichs. (= larymna Dbl.) (42 e). Ground-colour brown, 2 parallel, straight, dark brown astyoche. 

 transverse lines rim behind the middle across both wings from the costal to the inner margin. They en- 

 close no Ughter 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 

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

 iris in cellules 5 and 6 near the distal margin 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 Guiana 

 and the Amazon. — lucia Weijm. (Stett. Ztg. 1885, p. 285) (= astyoche var. albomaculata Stgr.: Exot. Tagf. lucia. 

 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 astyoche, but the hindwing shows in the lena. 

 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 S'** rows near the costal margin 2 black eye-spots with 

 white pupils. In the $ the basal half of the hindwing 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 margin is dark brown. Surinam, Guiana, Amazon, north-eastern part of 

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

 the hindwing is more blue-gi-ey and the bluish white spots are replaced by dirty white ones. From the 

 Eio Negro and the Amazon. — glaucolena Stgr. i. I. (42 e) is a local form in which the blue spots of the glaucolena. 

 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. — amah'a Weym. (Stett. Zg. 1885, p. 285) (= leu- amalia. 

 cospila Stgr.: Exot. p. 220, 1887) (42 e) is a form which Hewitson figures in the 2"*^ volume of his 

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

 rmited 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 

 spots, instead of the elongate bluish white ones of typical lena. Moreover on the upper surface of the fore- 

 wing there is a distinct white band in the female. From Pebas on the Upper Amazon. 



P. dracontis Hhn. ('? = hyahnus Gmel.) (43 a) is very similar to lena in the scheme of markings, dracontis. 

 but the shape 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 Stgr. i. I. A form in which the greater part of the extincia. 

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

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

 posterior ocellus is extremely small. From Manicore. 



b) Without light band, but with three straight, almost 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 luna. 

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



V 23 



