( 189 ) 



specimens ai-e exactly alike ; ami thii-dlv.as some of the most conspicuous abermtions 

 have not received a name, I think it is not only extremely difficult to say which 

 specimens really belong to ab. arruanus (Feld.), or to ab. pronomus (Cfray), etc., but 

 I believe it is also quite unnecessary to keep individuals that are aberrant in a very 

 unimportant way separate under names of their own. Important aberrations, liow- 

 ever, I regard as being worthy of names : important aberrations I call such as 

 point to other subspecies or species, or show the extreme development of one or more 

 characters ; such aberrations give us the best hints to understand the relations of the 

 subspecies or of closely allied species. So I shall enumerate J-ab. eumaeus (liippon), 

 because it points to T. priamits urvillianiLS (GuA\) by its bluish colour ; ab. fjoliath 

 ((^berth.), as it reminds one of T. victoriae (Gray), paradiseiis (Standing.), and the 

 yellow Troidea in having the basal portion of the fifth subcostal nervule of tlie 

 foiewings much elongated. As I said before, some of the most conspicuous 

 aberrations have no names : these are the feinnles without spot in the cell of the 

 forewings [as in T. pri'iuius (L.)] and the females with the cellular ]iatcli of the 

 forewings so much enlarged as to occupv nearlv the whole cell [as in '/'. Iijilin.s 

 (Feld.)]. 



(5. ^"Median nervure of the forewings above more or less green. Klack outer 

 margin of the hindwings much narrower than in T. priamus (L.) ; below, the disco- 

 cellular nervules of the hindwings very narrowly bordered with lilack. Many undr^ 

 assume a ]iuriile colour in certain lights. 



The principal aberrations are as follows : — 



(«-) : Xo name. ^Median neri-ure of forewings without green scales. 

 (li-) : c?-ab. crunius (Feld.). 



Ormthnptera pn'nmux var., De Haan, VerJi. Nat. Gesrii. Ned. overs, hez. p. 18 (1840) (S.W. Xew 



(ruinea). 

 Papilin cmniiii Felder, Verb. '.. b. G«. 117™ p. -290. n. V2. & p. 332. n. 9 (1804). 

 OniiOioptem priamnn var. crnnius, Fickert, Zool. .luhrb. p. 70l). n. 7 (1889). 



Hindwings above without any (black or yellow) spots. 



In Felder's pefjasus there are two very feeble black spots on the hindwings. 



(c-) : <?-ab. eumrieiis (Kippon). 



(Iniilh„j,lrra i;u,t,u>Ms Rippon, Ann. .Miuj. .Y. //. (T,). X. p. 19:! (J,mc ? ) ( 1892) (.\.rii Is): i.l , 

 l,;,„. Drnith. text & plate ((J, npc ? ) (1892). 



Bluish green, instead of green or yellowish green. 



$ . Cell of forewings very seldom without a white patch ; the twodiscal markings 

 of forewings, situated between the median nervules, mostly lai-ge. Tin' white 

 markings of the hindwings stand closer to the outer margin than in /'. pruimnf: (I,.) ; 

 they are large, with the black spots comparatively small; between the lower median 

 nervule and the anal angle there is nearly always a large white maik. 



(d-) : } -ab. brunneus ab. nov. 



White markings on upperside of forewings entii-ely obliterated, e.\cept a jioint- 

 like spot between tlie lower median nervules. 



This remarkable abeiTation has been found by Mr. A. S. .Meek on Fergusson 

 Island, D'Kntrecastcau.x Islands ; among some hundred specimens fi-om that locality 

 there are all intergradafions between this aberration and j-ab. archideuii (Gray). 



