RHOPALOCERA MALAYAXA. 137 



Genus ERGOLIS. 



Ergnlis, Boisdiival, Spec. Gen. i. t. 4, f. i (1830) ; Westw. Geu. Diuru. Lep. p. 409 (1851) ; Moore, Lcp. Ceyl. 



i. p. 43 (1881). 

 Aricuhw, Horsf. Cat. Lep. E.I.C. t. C, f. 2 (1829). 



Anterior winfjs large, subtriangnlar, the costal margin nuu^li arched, ajoex subacute, the apical angle 

 oblique ; outer margin more or less convex, waved and siuuated ; the inner margin nearly straight, more 

 or less overlapping and convex at base. Costal nervure greatlj' swollen at the base ; subcostal nervules 

 arranged almost as in Eiiri/trhi, Ijut the middle disco-cellular nervule considerably longer than the upper; 

 the lower disco-cellular nervule curved outwardly above and inwardly below. Posterior wings very broad ; 

 costal margin oblique and very slightly convex and slightly gibbous near base ; outer margin rounded, convex, 

 and strongly waved ; neuration generally as in preceding genus. Body of moderate size ; palpi porrect, 

 slightly curved, extending considerably beyond the head, and not elevated above the middle of the eyes ; 

 antennffi slender, with an apical slight and gradually formed club. 



ErtjoUs is not only allied to Eunjtchi, in possessing the common and aberrant character 

 of dilatation of costal nervure, but like that genus it is also found in both the Ethiopian and 

 Oriental regions. Unlike Eunjtcla, however, it is as well or better represented in the last than 

 in the tirst-named region. 



We are indebted to the late Dr. Horstield for a drawing of the larva of E. ariadne, as found 

 in Java,* which somewhat agrees with the general structure of the African species of Eurijtela, 

 described by Mr. Gooch (ante, p. 136), in possessing bifid spines to the head. On this siibject 

 Mr. Wallace has remarked that, as the larval structure " agrees with the Juitonia type," while 

 the neuration is so distinct "it seems probable therefore that, as we know sometimes 

 happens, the larva alone has become modified, so as to resemble a group with which it has 

 no direct affinity." f 



Mr. Wallace describes the butterflies of this genus as frequenting open situations "fluttering 

 among herbage, and having much the habit of the more active Satijrida'."l 



1. Ergolis ariadne. (Tab. XL, fig. 6 s .) 



Faiiilio Ariadiir, Liniifeus, Syst. Nat. i. 2, p. 778, n. 170 (1767) ; Job. Amcen. Acad. vi. p. 407, n. 71 1 1704); 



Fabr. Syst. Eut. p. 507, u. 267 (1775). 

 Bihlis Ariadne, Godt. Eiic. Meth. ix. p. 327, u. 6 (1819). 

 Papilio Coryta, Cram. Pap. Ex. i. t. 86EF (1779). 

 Ariadne Coryta .' Horsf. Cat. Lep. E. I. C. t. C, f. 2 (1829 1. 

 Ergolis Coryta, Boisd. Sp. Geu. i. t. 4, f. 4 (1830). 



Ergolis Ariadne, Horsf. & Moore (excl. Meriom; Cram.), Cat. Lep. Mus. E.I.C. i. p. 144, u. 293 (1857). 

 Ergolis Coryta, Horsf. & Moore, Cat. Lep. Mus. E.I.C. i. p. 144, n. 294 (1857)) 

 Ergolis Ariadne, Butl. Cat. Fabr. Lep. p. 70, n. 2 (1809) ; Trans. Linn. Soc. ser. 2, Zool. vol. i. p. 545. u. 1 



(1877) ; Wall. Trans. Ent. Soc. 1869, p. 332, n. 1 ; Druce, Proc. Zool. Soc. 1878, p. 842, u. 1 ; ibid. 



1874, p. 105, n. 1 ; Snellen, Tijd. Ent. xix. p. 146, n. 17 (1876); ibid. xxi. p. 9, u. 29 (1878). 



* Cat. Lep. E. I. C. t. 7, f. 6 (1829) ; copied by Boisduval, Sp. Geu. i. t. 4, f. 4 (1836). 

 t Trans. Ent. Soc. 18G9, p. 332. I Ibid. 



June 30, 1883. '^ n 



