( 259 ) 



c. Similar to aoctula Westw. iu colour ; forewings narrower, outer margin 



of hindwings almost entire ; oval red mark of the head smaller. 



P. erebus Wall. ; Malacca, Sumatra, Borneo. 



d. Korewings velvety black, with a blue gloss towards anal angle ; hindwings 



dark steel-blue ; collar and sides of the mesosternum much less extended 

 red than in erehihs. P. noctis Hew. ; Borneo. 



li. Feiiudes. 



a. Upperside brown; forewings whitish between aiicx and discoidal cell. 



P. nox Swains. 



b. l'i)iierside brown; lioth wings with narrow, adnervular, whitish .-^treaks. 



P. noctula Westw. 



c. I'pperside of forewings brown, with adner\ular white streaks in apical 



region ; hindwings opalescent blue. P. erebus Wall. 



d. Ujiperside brown ; ner\ules margined with diity white in apical region 



of the forewings; hindwings with creamy buft' marginal band, much 

 dusted witli brown scales, and including a series of submarginal, inter- 

 nervular, brown spots. P. '/loctis Hew. 



In P. nox Swains, the anal valves of the nude are more or less red ; sometimes 

 they look quite black, but the red hairs are always visible under a lens. 



Hab. Java (10 cJ,6 ? ). 



•31. Papilio noctula Westw. [J,?]. 



J. Piqnli; mictnla Westwood. Tr. Ent. Sec. Loud. p. 00. t. 4. f. 3 (1872) (Borneo). 



$ . PaiiiUii strU Westwood, Ix. p. 92. t. 4. f. 4 (1872) (Borneo). 



cJ 5 . Pdjiilid niictuki, Kii-by. Syn. Cat. Diii.ni. Lcp. Suppl. p. 813. n. 378 (1877). 



The adnervular streaks of the /ema/e are in West wood's figure too broad, and the 

 ground-colour of the wings is much too black. The anal valves of the tiude have 

 sometimes red scales. 



Ihih. Borneo (6 (?, 3 $). 



b->. Papilio erebus Wall. [<?,?]. 



% . Piijdliii mix var., De Ha:in, Vcrh. Xat. Gcscli. Xed. oeer::. her., p. 41. t. f>. f. 'A (1840 ) (Banjermassing. 

 Borneo). 



Papilio nux, Doubl. Westw. & Hew., Gen. Diurn. Lrp. I. p. 9. n. 12 (184U) (Penang : nee Java) ; 

 Gray, tW(. Lep. Ins. B. M. I. p. 8. n. 2(S (18.')2) (Penang ; si/ztou. exp.) ; id., List Lep. Ins. B. M 

 T. p. 9. n. 31 (185G) (Penang : s//»iO)i. cc^a) ; VoUenhov., Tijilschr. i: Ent. III. p. 80. n. 80(lKi3O) 

 (Borneo; nee Java); Feld., 1'cr/i. :. b. Ges. Wien p. 325. n. 4i)9 (1864) (Penang; m-v 

 Java); Wall., Ti: Linn. Soc. Lund. XXV. p. 41. n. 17 (1805) (Penang: me Java): Haasc, 

 Untersucli. iih. Mint. p. 28 (1893) (Penang ; «<c Java). 



J. Papiliu tre6«.i Wallace, Tr. Linn. Sue. Lund. XXV. p. 41. u. 19 (18lJo) (Malacca : Borneo): 

 Westw., Tr. Ent. Soe. Land. p. 91-93 (1872). 



tJ 5 . Ptipilio erebn.'i, Oberthilr, Et. d'Ent. IV. p. HI. n. 3 bis (1879) (Sumatra) ; Diat., Rliup. Mai. 

 p. 334. n. 1. t. 31. f. 1 (cJ). 2 ( ? ) (1885) (Mal. Pen. ; first descr. & fig. of ^) : Hagen, Iris 

 VII. p. 26. n. 25. t. 1. f. 2 (/.) (1894) (Sumatra). 



Distant (J.c.) says that " I'rof. Westwood also gave a description of what he 

 considered the female of P. erebus as ' black above ' which, with other characters 

 enumerated, do not apply to the species." If we compare, however, what ^\'estwood 

 (I.e.) says on page 91 about the female of ei-ebus, of which that sex was alone known 

 at the time, it is quite clear that Westwood's erebiis was indeed this species. 



In Dr. Staudinger's collection are two feiitales from S.E. Borneo, which are 

 distinguished bj" the anal region of the forewings having a distinct bluish opalescent 

 gloss, which in my Malaccan specimens is visible (uot always) only on the submedian 



