406 



EURYTELID^. 



precostal ; branching at a moderate distance from the base. The upper disco-cellular arising at a very little 

 distance be}'ond the origin of the branch, and converted into the slightly curved base of the discoidal vein ; 

 the lower disco-cellular being obliterated, and the cell open. 



Fore Legs of the male small, slender, and very hirsute ; those of the female still more slender, scaly, scarcely 

 hirsute. The tarsal poi'tion dilated beyond the middle, where it is articulated ; the joints armed beneath at the 

 tip with several rather long spines ; terminal joint minute, conical, with two terminal spines. 



Four Hind Legs slender, and rather short, scaly, slightly hairy. Tibia and tarsus armed beneath and at the 

 sides with short spines. 



Larva cylindrical, the joints rather constricted; anterior segments attenuated. The head armed with two 

 long slender horns. Fourth segment produced above into a conical point, haiiy at the tip ; the other 

 segments produced above into a small, slender, setigerous lobe. Tail not bifid. 



Chrysalis susjsended by the tail. The head-case terminated in a point ; the middle of the back of the 

 thorax elevated into a conical protuberance, as well as the back of the first segment of the abdomen. 



This is a genus consisting of species peculiar to Tropical America, remarkable for the peculiar character of tlieir colouring, being 

 of a dai-k brownish black, with a red submarginal band to the hind wings. The palpi of the males .are remark.able, terminating in a 

 small, globose, hairy knob ; whilst the last joint in the opposite sex is nearly iialf the lengtii of the long preceding joint. The open 

 cell of the hind wings, and the want of a small prediscoidal cell, at once separate these insects from JSIelanitis. I have followed 

 Mr. E. Doubleday in applying Hiilmcr's generic n.ame of Didonis to this group, although Fabriclus placed the type Papilio Biblis at 

 the head of this genus in his Si/sfrma Glossatorum, in which he transjiosed the specific name to that of the genus. It is evident, 

 however, from the characters which he gives, namely, the great length of the terminal joint of the pal})i, and the clavate antennje, that 

 he could not have drawn them from the present group. The three known species so closely resemble each other, differing chiefly in 

 the width and position of the submarginal red fascia of the hind wings, that I am tempted to consider them merely as geographical 

 representatives of but one widely dispersed species. 



DIDONIS. 



1. Did. Biblis. 



Papilio Biblis Fabricins, Syst. Ent. p. 505. n. 26l., Ent. 



Syst. III. pt. 1. p. 119. n. ."()5. ; Herhat, Pa}), t. 248. 



f. 1, 2. 

 Didonis Biblis Hiibner, Verz. hek Schm. n. 99-) Samml. 



exot. Schm. Band ii. pi. — . 

 Papilio Hyjieria Cramer, Pap. pi. 230. f. E. G. ; Boisd. 



MS. (Biblis Hyper.) 

 Biblis Thadana Godart, Enc. M. ix. p. 326. ; Blanch, in 



Lap. H. Nat. An. Art. iv. p. 445. pi. 18. f. 1. ; Boisd. 



in Cuv. Regne An. ed. Crochurd. Ins. pi. 13C. f. 3. 



(4. 4 a. Larva and Pupa). 

 Brazil, West Indies. B. M. 



2. Did. Aqanissa. 



Biblis Aganissa Boisdnval, Sp. gen. Lep. i. pi. 9. f- 7. 

 Me.\ico (Java Boisd. op. cit. Ei.pl. d. PI. p. 3.). B. M. 



3. Did. Pasira. 



Didonis Pasira E. Doubl. MS. ; Doubl. It'estw. S^ Hewitt 

 Gen. D. Lep. pi. 31. f. 2. 

 Guiana. B. M. 



Genus III. CYSTINEURA. 



Cystineura Boisduval, E. Doubleday. 

 Pantopoeia p. IJiilmer. 

 Akgynnis p. Menetries. 

 Ntmphalis p. God'. 



Body small, slender ; fore wings elongate-triangular ; hind ones rather short. 

 Head nearly as wide as the thorax, not tufted in front. 

 Eyes large, prominent, naked. 



Labial Palpi slender, porrected obliquely, nearly straight, advancing in front more than the length of the head, 

 and elevated to about the middle of the eyes, finely hairy to the tip ; middle joint with a slight crest next the 

 face. 

 Antennw not quite half the length of the fore wings, slender, annulated with white ; terminated by a distinct 

 elongated club, obtuse at the tip, concave beneath within, and finely carinated. 

 Thorax very small, oval. 



Fore Wings large, elongate-triangular. Costal margin slightly arched; apical angle rounded. Apical margin 



