ERYCINA. 



429 



The intermediate joints of the tarsi armed beneath with 



female cylindrical, scaly, longer than in the males, 

 spines at the tips. 



Foiir Hind Leg, moderately long, cylindrical. Femora of the middle pair elongated and curved. Tibial spurs 

 mmute. Tarsal jon.ts armed beneath at the tips with several short spines? Ungues very thin and much 

 curved,_the basal part ddated into an oblong pkte, with a deep notch at its extremity, wLre he tern ina 



Abdomen short. 



_ The smooth eyes slightly formed dub of the antenna3, and more or less elongated tails of the hind wings (each winn- bein.. produced 

 nto a smgle tad ,n the mKldle) distinguish this genus ; whilst the position of the branches of the postcostll vein of the ore w n° aii 

 heir transparent character, in tfie fol owing genus, at once distinguish it from the insects now before us, and whie a ^ am nc?;* t e 

 most elegant of butterflies. Tiiey have recently formed the subject of two memoirs bv M. Morisse, in the Anlk'TaL^^^^ 

 Entomolos,,uede France, for 1837_, and by W. W. Saunders, Esq., in the Transactions of the Entomological SolZof Lolnfy 

 he former of these wnterstlie spec.es were arranged, including also the naked-winged Zeoni.e under three difrerent"^<.eue7a ac ord^^ 

 to the various proportions intlie length of the_ labial palpi, as suggested by M. Eoisduval in his manuscripts, namely : tEr;cin'SS 

 Papdio Bu es of Clerck as its type; 2 D.orina comprising a single species, D. Laonome; and .3. Zeonia, divided into two sections 

 1st, wi h the ^ylngs not ransparent (Eryc. Mebb,rus, &c.), and 2nd, with the wings transparent (Pap. Octavius TS" ' 

 E. Doubleday in the Catalogue of the Lepulopterous Insects In the collection of the British iMuseL, united 'the species formin " £ 

 first section of these genera ogether, to which he applied the name of Diorhina, giving the name of Erycina' to Mo^^ e's'fii t 

 section of Zeonia, and retaining Zeonia for the second section of the same genus. Mr. Saunders, "looking to the imperfc t know 

 ledge we yet possess of the spec.es, and tlie length of the palpi on which the subgenera chiefly depend for eharncte.-, how these ml n 

 gradually dmiinish by almost iinpercei^tible deg.-ees fro.n the lo.ig porrect ones to those scarcely apparent," included all ti.e rpec'es ,n2r 

 the genus Eryc.na_, grouping the spec.es into various sections. On carefully exan.i.iing the species with the view to arrive at some 



thettT y7'' " V° '^""!r^ °^''^''' f'""°'"' ^ ^''^ '"°^'"^^> *'^ ^°"°^^ ^^'■- Samulers'sViews, with the exception of removb' 



thenaked-mnged Zeon.a3 from the genus, as they possess a peculiar arrangement of the veins of the fore wings not found in tl e otl erf 

 It IS true that we find several nnportant variations iu the shape of the hind wing, among the species he!-e retained in the "enu ' 

 accompanied by certain modifications in the arrangement of the wing veins. Thus, in the Butes g.-oup, the middle of the hind w^in" s 

 prolonged into a very naiTow ta. as long as the rest of the wing, a..d for the necessary support of thii tail the branches of e median 

 vein are disposed qui e close together, the middle one running down the middle of the tail, and the first and third extending p.Slvalon^ 

 US sides; whilst m the o her species with broader tails the branches of the median veins are less contiguous, and in Ly ippusand 

 Be phegor they are as wide apart as any of the otlier veins, the tails being short and wide. Yet in all these%pecies the precipe E-tbn 

 of the various veins and their branches is preserved, in addition to which there is a general simUarity iu tlir larger skerand lu he 

 colouring and bar-like markings of the wings. J o^ "''■'=' '<■"" m me 



Mr. Saunders also well remarks that our knowledge of the various species is still very imperfect, and in several instances onlv one 

 sex IS known; moreover, as the sexes vary greatly in outline and colouring, further investigation will in all probability prove that some 

 1 c r^'rff' T TV'^'^f' 'f """ T* ■'''"^' ^°^''^- ^'^^"'•'li^g to Mr. Swainson,"tlie sexes of E. Bi.tes (RheU. C ramerii 17^ 



Xn -^n r 7 ^r,'''n"^"' '".'";"■ f°™',«°l°"'-' o.- markings. The male of E. Dysoni has the upper surface of the fore W 

 splendid y glossed with blue with two slightly defined pale striga. ; whereas the female of the san.e species has the fore wi^'snZ 

 convex, the ground colour paler, and destitute of the blue tint, and the fascia, much broader. The species allied to PyreUis 0-a2r 

 :^;3:':±^r^:r t^t. ^Zr^!::^^^. ^"^^ "V^f ?.*'r *^^ -^'^^' '--S.W-k with crimson fascia.; but the fbmaL has ,h I^ 



* 'R . ' '1 — ' "" "" ""^ .. »wji,^ ..X L,..v. t,.Y»_» oii.^co, iiciui^ uunjK wiLii cnmson 



wings more convex, with a snbapical pale striga, and the hind wings have the tails broader and more decided 

 wings in the male are glossed with the most brilliant blue and golden green tints, varyiu^r in difterent liohts 

 the under surface almost similar to the upper side. " ^ 



The species appear to be confined to the continent of Tropical America, Mexico being the northern, and Brazil the southern limit of 



beneath however, all the 

 whereas, the female has 



ERYCINA. 



Division *. Palpi projerting beyond the face. 



Section I. Palpi projecting considerably beyond the length of the head. 

 Tails very long and narrow. (Subgenus Rhetus Swainson, Erjcina 

 Morisse.) 



1. Eryc. Butes. 



Papilio Butes Clerck, Icon. pi. 46. f. 6. ; E. Doubleday, 



List Lep. Brit. Mus. pt. 2. p. 4.; W. W. Saunders, 



Trans. Ent. Soc. Land. v. p. 217- 

 Papilio Licarsis Fabr. Mant. Ins. ii. p. f). n. 73., Ent. 



Syst. III. pt. 1. p. 28. n. 83. ; Herbst, Pap. t. 58. f. 4. ; 



Godart, Enc. M. ix. p. .564. n. 3. (Eryeina L.) ; 



Morisse, Ann. Soc. Ent. de France, vi. t. 14. f. 1, 2.; 



Boisduval, Sp. gen. Lep. pi. 20. f. 6. 

 Diorhina Rhetus E. Doubl. List Lep. B. M. pt. 2. p. S. 

 Syrmatia RheUis Hiihner, Vers. belt. Sclim. p. 23. n. 171. 

 Rhetus rramerii .firainson, Zool. III. 2nd ser. t. 3S. 



Var. Saunders, Op. eit. pi. 20. f. 6. 

 Guiana, brazil, A'enezuela. 



B. M. 



2. Eryc. Rhktus. 



Papilio Rhetus Cramer, Pap. pi. Qs. f. C. ; Saunders, 

 Trans. Ent. Soc. Land. v. p. 217. 

 Surinam. 



3. Eryc. Tuia. 



Eryeina Tliia Morisse in Ann. Soc. Ent. de France vi p 

 419. t. 14. f. 3, 4.; E. Doubl. List Lep. Brit'. Mus 

 pt. 2. p. 4. (Diorhina Th.) 

 Mexico, Honduras. j{ >• 



4. Eryc. Ahistodorus. 



Eryeina Aristodorus Boisduval MS. ; Mori.-:se in .Annates 

 Soc. Ent. France, vi. p. 420. 

 Cayenne. 



