RH OP A LO CERA MALA VAN A . 



Genus EUMPUS. 

 Kurifuts, Westwood, Gen, Diurn. Lep. p. 298 (1850). 



Anterior wings in the male subtrian^ular, the costal margin moderately arched and convex, the 

 apical angle rounded, the outer margin sinuated and concave near centre, and generally slightly gibbous 

 near apex of third median nervule, inner margin nearly straight ; in the female the anterior wingB are 

 elongated, and the outer margin rounded and convex. First subcostal nervule emitted n little before end 

 of cell ; second emitted some distance beyond cell, but before the apex of costal nervine ; third emitted at 

 about same distance from second as second is from end of cell ; fourth and fifth bifurcating at about 

 one-fourth from apex ami extending to outer margin; lower disco-cellular nervule obsolete. leaving the cell 

 entirely open ; median nervure robust, the first median nervule with its base more strongly arched in the 

 male than in the female, Posterior wings subovate, the costal margin obliquely convex ; the outer margin 

 in the male strongly waved and Kealloped, and at the apices of the discoidal and first median uervules 

 developed into a distinctly caudate but truncate prolongation ; in the fentale the outer margin is waved 

 and slightly scalloped, but not caudate ; abdominal margins divergently oblique to anal angle, Subcostal 

 nervule s emitted at a little less distance from each other than the first is from base of subcostal nervure ; 

 lower diBCO- cellular nervule entirely obsolete. Anteume long, with a gradually formed elongate club. 

 Palpi obtusely pointed, obliquely porrect, and not raised above the middle of the eyes. 



This genus is of small extent and really belongs to the south-eastern portion of the 

 Asiatic Continent, and extends through some of its Eastern Islands. In Continental India 

 several species are found in the north-eastern districts ;* it is apparently absent from Ceylon 

 and the Andaman and Nicobar Islands ; two species occur in the Malay Peninsula, and the 

 genus is also recorded from Borneo, Celebes, Philippines, and Japan, t 



Like Euthalia, Euripus exhibits the greatest sexual dissimilarity in its species, and, as in the 

 first-named genus, the males of several species are very closely allied, and the strongest specific 

 differentiation is found in the females. These are 41 mimickers" of species of Iluplmi, and their 

 habits corroborate this view. Thus Mr. de Kiceville, who collected in Bikkim, mistook females 

 of Euripus haltiher&es for specimens of Eupltrtt rhmlumtituhm, which he states " they evidently 

 mimic, not only in form and coloration, but also in the slow-flapping flight and the habit of 

 settling in open places so characteristic of Euplom "^ and he again remarks that the male, 

 which is not thus protected, "has a rapid flight, and never settles with expanded wings in 

 conspicuous places, as the female does/* § This is a good illustration of the postulate made by 

 Mr. Bates, of one explanation of sexual dissimilarity, as the advantage in Nature that accrues 

 to M the possession of some peculiar colour, or form, or habit, by one sex to enable it to escape 

 dangers peculiar to itself, owing to its haunts being somewhat different from those of the 

 opposite sex." |[ 



* It is apparently not found in North -TV eutern India, as Mr. Monro has neither included it amongst the genera 

 tiollccled by dipt. Lang (Free. Zool. Boe. 1860 ). m>r enumerated it in those collected l»v the liev. J. II. II (.citing (1W. Zoo). 

 Sac. 1882). 



| Ainuilnnd imiPt also be milled if \\< pUu-o the specks described by Mmetriei? (Ad. Behrenkii) in this genus, ae lian 

 been dtme by Mr. Kirby (Kyu. Cat. Dium. Lep. p. 2*28, n. 0), bat most otber writers have retained it in Euthalia. 



♦ Joura, Asiat. Soc. Bcug, vol. J.,, Pt, 2, p. JU (1881). § Ibid. p. 57, 

 ]] Froc. Ent, Hoc. Pbilad. voL iv. p. 205 (lH6uj. 



June 30, 1883. 2 w 



