LEUCOTHYEIS. Bij R. Haensch. 149 



Under the name L. athalina (38 g) Staudinger united several similar forms. I regard as typical speci- aUialina. 

 mens according to Staudixgee's figure those from Bolivia of which the $ bears a dark mark across the cell of 

 the hindwing. The forewing is similar to that of valida, but the second white dot at the costal margin near 

 the apex is absent. — The similar form from Colombia I call tremona form. nov. In the $ the dark mark iremona. 

 on the median of the hindwing is absent and also the connecting triangle between the end of the cell and the 

 inner margin. The half-band at the end of the cell is produced into a point at the 3"' median vein. — ban- hanjana. 

 jana Hsch. is the form from eastern Ecuador, which occurs at elevations of from 2 — 3000 m. The two apical 

 vitreous spots are proximally bordered with black. The half-band at the end of the cell is as in athalina, but 

 in the $ the dark mark on the median of the hindwing is absent. On the under surface the colour is brown- 

 red, hghtest in tremona: yellow-brown. — santineza Hsch. is a smaller form from Ecuador; it flies at elevations sanlineza. 

 of from 1000 — 15000 m. The spot in the cell of the forewing in the cj is wedge-shaped, in the $ broader, with 

 the extremity obtuse. 



L. tabera Hew. (39 a), from the eastern Andes of Ecuador, has narrower half-bands across the end of tabera. 

 the cell of the forewing and in the middle of the cell. The distal margin of the hindwing is very broadly edged 

 with black. On the under surface the margins have dark brown-red markings. — In ab. tnaerenda Hsch. the maerenda. 

 apex of the forewing is broadly black with two vitreous spots. The hindwing has the distal half and the 

 apex black. 



The following forms have a narrower distal margin to the hindwing. 



L. makrena Hew. (39 a), from Venezuela and Colombia, differs from the similar forms, such as santi- makrena. 

 neza, etc., in the much narrower distal margin of the hindwing. The half-band at the end of the cell of the 

 forewing is broad, the streak in the middle of the cell narrow. — makrenita Hsch. (39 a) is considerably smaller, makreyiiia. 

 it flies in eastern Ecuador. The markings are similar to those of makrena, behind the end of the cell of the 

 forewing there is a white macular band. 



L. baizana Hsch., Hkewise from the eastern Andes of Ecuador, may be recognised at once by the smoky baizana. 

 brown colour and the long, narrow wings. The markings are similar to those of makrena. The dark brown 

 distal border of the hindwing is proximally dentate at the veins. 



L. quadrata Hsch. (39 a), from eastern Ecuador, is smaller than the preceding and may be recognised quadrata. 

 by the broad wings and the 2 vitreous spots in the apex of the forewing. The wings have a bluish white sheen. 



L. amalda Hew. (39 b), from Colombia, has very similar markings, but differs notably in the red-brown amalda. 

 colour in the distal half of the hindwing . It flies together with the very similar Pseudoscada lavinia, but is 

 easy to recognise by the dark streak in the cell of the forewing. — amaldina {Stgr. i. I.) is a smaller, more weakly amaldina. 

 marked form, likewise from Colombia. Its hindwing is diaphanous except for a yellow-brown distal margin. 



L. modesta Hsch., from western Ecuador and Colombia, has similar markings to quadrata. The apex modesia. 

 of the forewing is rounded; the half-band at the end of the cell is short, triangular; the dark distal border 

 of the hindwing narrow. 



L. bioculata Hsch., from Bolivia, is likewise a similar form to makrenita; with 2 vitreous spots in the bioculata. 

 apex of the forewing and indistinct streak in the cell. Beneath the margins are yellow-brown, with only 2 

 white dots in the apex of each wing. 



L. epimakrena Hsch., from Bolivia, is about the same size as makrena and has similar markings, li e-pimakrena . 

 may be recognised by having the distal border of the hindwing proximally dentate at the veins and a dark 

 streak at the end of the cell. The wings are elongate ; the spot in the middle of the cell of the forewing wedge- 

 shaped. 



L. zea Hew. (39 b) is one of the few but peculiar Ithomiids which occur in Mexico. Prominent zea. 

 characters are the brown-red margins and the presence of only one vitreous spot in the apex of the forewing. 

 — vicina Salv. is a similar form, also with brown-red margins, from Costa Eica. It is smaller, the margins vicina. 

 in the apex of the forewing are narrower. The spot at the end of the cell is triangular; the streak in the middle 

 of the cell narrower. 



L. caucana Stgr. (39 b), from the Cauca Valley in Colombia, has narrower margins and patches than caucana. 

 makrena. The black streak in the middle of the cell is often entirely absent. 



L. phemonoe DM. c& Hew. (= morphenoe H.-Schaff.) (39 b), from Colombia and Venezuela, has rounded phemonoe. 

 wings with narrow margins and a narrow streak in the cell of the forewing. The subcostal of the forewing 

 is red-brown; the whitish patches at the apex and distal margin are indistinct. — ■ burchelli Sand., from the burchelli. 

 Rio Tocantins, is said to be nearly allied to the preceding form, but to be distinguished by broader margins 

 and patches. Especially the dark oblique band across the end of the cell is prolonged and then continued 

 as a distinct stripe on the- 2"'i: median ; vein to the distal margin. - . - ._ 



