180 Mr. L. B. Prout on 



anteriorly ; a small white apical patch, terminating at SC", 

 ■where it attains a measurement of 3 mm. 



Fore -vviug beneath coloured much as in mabiUii, subapical 

 patch much more irrorated (in the paratype obsolescent), post- 

 median line from R^ onwards almost parallel with termen, a 

 dentate M'hitish snbterminal indicated from costa to E,\ 

 3-4 mm. from termen, a conical white blotch from tornus 

 obliquely to M*. Hind wing beneath with weak dark cell- 

 spot and curved median and postmedian lines and with traces 

 of a dentate whitish subterminal. 



Congo, Inkissi (Nkissi) River, Nkalama Falls, 18 April, 

 1887 [Jameson), ex coll. Druce, wrongly identified by Druce 

 (Jameson's ' Story of the Rear Column,' p. ^50) as 

 «//M5/?-fl^fl,Walk. A damaged ^ from Fantee, Gold Coast, also 

 mentioned by Druce, likewise belongs here. The date of the 

 type-specimen, correctly given as 18 April on the label, and 

 confirmed from Jameson's itinerary (p. 24), is misquoted 

 "18 August" on p. 450. 



Allied to mabillii, but very distinct in the difi'erently 

 shaped non-latticed subapical patch, much straighter post- 

 median line, lack of Avhite basal dot, etc. 



23. Achaa ministra, sp. n. 



S ? .—69-78 mm. 



Near serva, Fabr., with which it has hitherto been 

 confounded. Palpus of S """ith third joint much longer, 

 over one-half as long as second. 



Fore iving with the markings and general coloration of 

 the darker forms of serva^ the blue-purple reflections and 

 black-brown terminal clouding almost always strong; fringe 

 from near apex to 1\P pale buff, thus lighter (generally very 

 much lighter) than in serva. 



Hind iving Avith the interrupted oblique blue-white median 

 band narrower than in serva, apical white spot generally 

 smaller. 



Underside darker than in serva, the M'hitish postcellular 

 patch of fore wing smaller. 



Dutch New Guinea : Wandammen Mtns., 3000-4000 feet, 

 November 1914 {A, E. ^' F. Pratt), type and another <$ 

 and allotype ? ; Arfak Mtns. (Pratt) ; Upper Setekwa 

 and near Oetakwa River [Meek). Key Islands, Dec. 1915- 

 March 1916 [W. J. C. Frost). 



Most oi Hampson's serva ab. 1 {purpurascens. Strand, 

 Arch. Nat. Ixxix. A, (8) p. 73) belong to this species, but 

 one or two, including the type-specimen, are dark aberrations 

 of serva. 



