520 MR. H. W. BATES ON THE LEP1DOPTERA 
each other so much, that I could not distinguish them when on the wing. It is replaced 
in South-East Brazil by the Th. Pytho of Felder, which I consider a local form of the same 
species 
Genus Dircenna, Doubleday. 
Doubld. and Hewits. Gen. Diurn. Lep. p. 119. 
In this genus the hind-wing neuration resembles that of Methona, inasmuch as the 
lower disco- cellular is strongly angulated, and emits a recurrent nervule ; but the middle 
disco-cellular in the c? is bent, and directed towards the apex of the wing. The internal 
nervure is very short, terminating on the abdominal edge. In the fore wing the first 
median branch is thrown off at a moderate distance from the base of the wing, terminating 
on the hind margin, close to the posterior angle, the cell being much broader than in 
Methona and Thyridia. The body is slender ; the antennae moderately elongated, and 
thickened towards the tip into an elongate club. The palpi are clothed in front with 
long porrect hairs, their third joint being long and pointed. The male fore tibiae and 
tarsi are aborted, being reduced to a small knob at the apex of the femur. 
Doubleday left the list of species referable to this genus in an unsatisfactory state. 
The following are all at present known * : 
1. D. Klugii, Hiibn. Zutr. f. 801, 802.— Mexico. 
2. J). Jemima, Hiibn. ib. f. 807, 808. — Venezuela and New Granada. 
D. Iambe, Doubled, and Hewits. Gen. Diurn. Lep. pi. xvii. f. 2. 
3. D. Zero, Hiibn. Zutr. f. 243, 244.— South-East Brazil, Bahia. 
4. D. Uhoeo, Felder, Lepidop. Fragment., p. 40. — South-East Brazil, Para, and 
- 
Amazons. . i . 
5. D. Xantho, ib. p. 40. — South-East Brazil, Bahia. 
6. D. Zella, Guer. Icon. Begne Animal, text, p. 470. — Bolivia. 
7. JO. Epidero (Boisduval, MS.), n. sp. — Amazons. 
8. D. Zenea, Cram.! t. 231, f. D. <J . 
D. Melanida, Cram. t. 231, f. F. 2 . 
D. Zcelo, Boisduval, MS. 
1. Dircenna rhoeo, Felder. 
D. rhoeo y Felder, Lepidop, Fragment., p. 40. 
This form differs from the D. Dero of Hiihner only in the greater breadth and irre- 
gularity of the dusky-black border of the hind wing, especially in the $ , and in the 
* 
Dircenna Duillia, Hewits- Trans. Ent. Soc. vol. ii. N.S., pi. xxiii. f. 3, is a Hymenitis 
+ This species is im 
un 
wings 
wing. 
bright 
under the MS 
wing, and the nervures are suffused with bright fulvous. The nervures 
yellow. It appears to be a rare species. In Dr. Boisduval's collection, 1 
of D. Zcelo. I am indebted to Dr. Boisduval for the present of a fine example. I believe, however, that D. Lenea 
(Guiana), D. Epidero (Amazons), D. Zelia (Bolivia), and D. Xantho (Bahia) might be all treated as geographical 
forms of one and the same species. 
