138 DIECENNA. By R. Haensch. 



philenion. S. philemon Fldr., from Venezuela, is said to be very similar to reckia Hbn., but to have red-brown 



collar and patagia. 



theaphia. S. theaphia Bates (36 d), from the Lower Amazon, is the smallest species of the genus and also of the 



whole family. Examples occur in which the wing-expanse is less than 30 mm. It has very delicate, yellowish 



baiesi. wings and a straight, black oblique band at the end of the cell of the forewing. — bates! Hsch., a local form from 



majuscula. the Upper Amazon to Ecuador, is larger, more vividly coloured, with broader black margins. — majuscula Hsch. 



is a larger form from British Guiana. It has broad deep black margins and very small white marginal dots. On 



the under surface there is a red-brown streak in the distal margin near the inner angle. 



reckia. S. reckia Hbn., from northern Brazil, is a smaller species and may be recognised by the absence of the 



white marginal dots on the upper surface. The yellow ground-colour is only slightly transparent. 



ortygia. In S. ortygia Bruce (= garleppi Stgr. i. I.), from Peru, the white marginal dots are likewise absent; but 



it is considerably larger with very long, pointed wings. The dark margins, especially in the (J, are very transparent; 

 the inner margin of the forewing very broad. 



20. G.enus: Dirceuiia DM. d- Hew. 



With this begins the group of the true Ithomias, in which the lower discocellular of the hindwing forms 

 a sharp angle with the median, so that the cell is short. 



In Dircenna the palpi are strongly hairy, the cell of the hindwing is short. The forelegs of the $$ are 

 four-jointed. The genus comprises for the most part fine-looking species with transparent wings and short antennae. 

 Representatives of this genus are found almost everywhere from Mexico to Argentina; they are mostly not rare 

 and some, such as klugi from Central America and dero from Brazil, are among the commonest butterflies of 

 the respective districts. 



klugi. D. klugi Hbn. (36 e cJ, $). The ^J has longer hindwing and more delicate colouring, which is not suf- 



ficiently brought out in the figure; the hindwing in the (J is yellowish, only at the inner angle yellow-brown, 

 not red-brown, in the $ uniformly yellow-brown. Examples from the volcano Chiriqui in Costa Rica, which 

 chiriquensis . I therefore call chirtquensis form, nov., are distinguished from typical specimens from Mexico, Honduras, etc., 

 by brighter colouring and also by a much broader spot in the cell of the forewing. In the ^ the distal margin 

 of the hindwing is broadly coloured with red-brown near the dark border and proximally distinctly defined by 

 the transparent basal part. 



relata. D. relata Btlr. & Druce, frona Costa Rica, has a blackish base to the forewing, blackish apex to the 



olyras. hindwing and a broad, vitreous oblique band on the hindwing, especially in the $. — olyras Fldr. (36 e) is a 

 very similar, larger and much more brightly coloured form from Colombia, which recalls Olyras montagui and 

 Ceratinia excelsa by the vitreous oblique band of the hindwing, especially on the underside (which is not visible 

 in the figure) and other markings. In the $ the hyaline spots of the forewing and the oblique band of the hind- 

 lonera. wing are yellow. — lonera Btlr. & Druce is another, similar form from Costa Rica with blackish spot at the median 

 of the forewing and blackish veins. The disc of the hindwing is colourless. The abdomen is beneath black-brown, 

 not yellow as in olyras. 



jemina. E*- jemitia Hbn. (36 e ^J, $) has a dark spot in the middle of the cell of the forewing and red-brown inner 



margin and median. The hindwing in the (J is blackish at the inner margin, in the $ with spots across the dark 

 median veins. The species varies somewhat, the ground-colour ranging from pale red-brown to yellow; it occurs 

 bairdi. in Colombia and Venezuela, but is said also to be found in Nicaragua (= jambe Dhl. & Hew.).- — ^bairdi Beak. 

 is said to be similar to jenmia, with black inner margin of the forewing. The basal half of the hindwing is ochreous, 

 euchylma. the distal half blackish with black veins. — euchytma Fldr. (36 f (J, $) has shorter wings and red-brown inner 

 margin. Across the cell runs a forked, black oblique band and through the cell a half-band. The hindwing has 

 broad distal margin. The ground-colour of this wing is j^ellowish with red-brown veins. In Colombia and Vene- 

 zuela; common. 



visina. D. visina Hsch. (36 f), from eastern Ecuador, has almost colourless wings with very slight whitish smears, 



as in olyras. The median of the forewing is broadly red-brown. 



suna. D. suna Hsch., from western Ecuador, is a very similar, smaller species, in which only the club of the 



antenna is j^ellow-brown. The spot in the cell of the forewing is linear, as in marica. In the $ the subcostal of 

 the forewing is also red-brown, as well as the veins in the disc of the hindwing. 



marica. D. marica Fldr. (36 f ^, $), from Venezuela, and steinheili Stgr., from Colombia, are two nearly alHed 



forms with black antennae. In marica the patches at the end of the cell and the apex are yellowish, in stein- 

 heili whitish. 



