28 IIUOPALOCERA MALAYAXA. 



8. Euploea diocletianus. (Tab. IV., fig. 4 3 and 5 2.) 



/'((/-(■/((/ dinlctitinuK, Fabricius, Eut. Syst., iii., 1, p. 40, ii. 118 (1793). 



Ihnwisdiocktianns, Godt., Eiic. Mutli., ix., p. 1«1, ii. Ki (1819). 



EujiUca rlnidamiinthm (part), Horsf. k Moore, Cat. Lep. Mus. E.I.C., i., p. 120, u. '2.50 (1S.j7) ; T-utl., Proc. 



%ool. See, 1866, p. 290, n. 81. 

 Eiii'liiii diddt'tianus (part), Butl., Cat. Fabr. Lep., p. 2, n. 5 (lK(i9). 

 Calliidica diodHianm, Butl., Trans. Linn. Soc, ser. 2, Zool., voL i., p. 535, n. 1 (1877). 

 Salj>in.c diocletianus, Jouru. Liun. Soc, ZooL, vol. xiv., p. 291, n. 27 (1878). 

 DajiixfjiK dinclclianux, Moore, MS. 



:\[iile. Anterior wings dark indigo-blue, with pale retlections towards outer margins, and with the 

 following white spots :— two subcostal and linear, divided by lirst subcostal nervule, the mner one much the 

 longest (in some specimens tlie last is preceded above by a narrow linear spot, situated al)0ve costal 

 nervure, which is absent in the form figured) ; a very large and irregularly-shaped spot occupying apical 

 portion of cell, followed by a small one placed between first and second median uervules (in some specimens, 

 as in the one figured, this is preceded inwardly by a small pale bluish spot) ; a submarginal series of seven 

 pale bluish spots, four subapical placed l>etwecn the uervules, and three, which are very small, near anal 

 angle ; these are preceded by a large subi^uadrate spot between second and third median nervules, with a 

 small one beneath it, both of which are also pale bluish, which is also the colour of the pseudo scent-gland 

 or brand, situated beneath and parallel to third median nervule. Posterior wings dark indigo-blue, with the 

 discoidal and costal area olivaceous-l)rown, and with the following pale bluish spots : — three submarginal 

 near apex, the upper one small and somewhat indistinct (sometimes absent), a small spot at end of cell 

 (in some specimens there are three), a marginal series of small spots near anal angle, preceded by two 

 (and sometimes four) slightly larger spots ; four elongate white fascia; commencing near base, and situated 

 two between third median nervule and submedian nervure, and two on abdominal margin. Underside of 

 wings paler and more olivaceous, the bluish spots much paler, a large additional white spot between second 

 and third median nervules, and with the pseudo scent-gland concolorous. Posterior wings marked as 

 above, but with the submarginal spots more numerous and continuous ; a long white streak and two linear 

 spots in cell, and four linear white spots surrounding apical portion of cell. Head and thorax above black ; 

 head and anterior portion of thorax spotted and streaked with white. Abdomen dark bluish or fuscous 

 above, the sides paler and spotted with pale bluish beneath. Underside of head, sternum, and legs black; 

 palpi, sternum, and immediate base of wings spotted with white. 



Female. Paler and more olivaceous above. Anterior wings with the submarginal spots much paler, 

 the spot beneath apex of cell very large, and followed beneath second median nervule by a larger and more 

 irregular spot, which is connected with the one near margin. Posterior wings with a marginal and 

 submarginal series of verj' pale bluish spots ; three large white streaks in cell, the apex of which is 

 surrounded by five white spots, the two lower ones being longest, and with the four basal and adbominal 

 fascia; as in male. Underside of wings olivaceous-brown, marked and spotted generally as above, but with 

 the two spots between second and third median nervules of anterior wing not united. 



Exp. wings, 3 78 to 80 millim. ; 2 75 millim. 



Hab. — Malay Peninsula ; Province Wellesley (coll. Dist.) ; Penang ; Malacca : Singapore (colls. 

 !Moore and Brit. j\[us.). — Sumatra (coll. j\Ioore). 



This is evidently a Malay race of E. rJuulaiimntlnis, Fabr., a species which I follow Moore 

 iind Butler in considering as typically represented in Northern India. It possesses also another 

 and very distinct Bornean race, described as E. Loicii. The principal difference l)etween these 

 three species or races is that of a gradually increasing melanism, which is least in the North 

 Indian E. rhadamaiithus and greatest in the Bornean form E. Eoivii. 



