( 515 ) 



The two Aliyssiniaa specimens collected by 0. Nenmaun, and the two which 

 are among the dni)]icates of Baron von Erlanger's material, belong to the form 

 tiikuoa. They agree fairly well with certain Angola individuals in approaching, on 

 the npperside, a little the form cen/m, the discal band of the forewing being 

 pruximally paler than distally. We have both f. tiiknoa and f. reri/ne from various 

 places in Eastern Africa and Angola, and f. ceryne from Uganda. 



The individnals of this species from the Niger (and probably also those recorded 

 from Kameruu (see Aurivillius, I.e.) are different from the southern and eastern 

 specimens, belonging to a distinct subspecies, fur which we propose the name 



P. ceryne ceruana subsp. nov. 



$ ?. Similar to ceryne f. cer>/ne, but the distal liorder to the underside of the 

 wings much darker. The pro.ximal black lunules of this border continuous, and 

 the bars situated between this black line and the black edge of the wings also 

 black or deep brown. — The form corresponding to f. tukma is not known to us. 



Ilab. Niger: Lokqja, March to May 1896 (Dr. Cook), type ; Akassa to 

 Onitscha (Dr. Cook). 



7 c?c?, 2 ? ?. 



22. Precis antilope. 



Saloinis imlilope Feisthamel, Ann. Soc. Enl. France p. 25(\ n. 4 (1850) (Cazamanoe). 



Stdamis simia Wallengren, I.e. p. 26 (1857) (Natal). 



Prnvs xlmki, Aurivillius, J.c. p. 137. n. 8 (189;i). 



Preiis anlilop,; id., /..-. p. 138. n. 10 (1899) (partim) ; Pagen.st, I.e. p. 141. n. 7 (1902) (syn. 



parti m). 

 Precis UHtilripc, Marshall, Trans. Ent. Sue. Lnnd. p. 418 (1902) (jintihipe = dry phase, sinua = 



wet phase). 



We have dissected a series of specimens of both forms simia and antilope. 

 They agree perfectly. Marshall has proved the specihc identity by breeding one 

 from the other. 



The species does not occur in the West African Forest Region proper ; but it 

 is found in the Hinterland of the Gold Coast and Sierra Leone and in Senegambia, 

 and in the south again in Angola. These western individnals do not present any 

 constant differences from Eastern ones. 



Four Jc? of f. antilope from : Gurgnra to Gololota, 17. vi. UU ; Madali, Abai 

 R., 1. X. 00; UbaR., 27. i. 01. 



The f. simia, was not met with, but we have a specimen of it from Sheikh 

 Hussein, 1. x. 94 (Donaldson Smith). Pagenstecher, I.e., records frim,eni from 

 Balta. This " trimeni " may be f. simia. 



Aurivillius, I.e., regards cuama as a form of antilope, gives simia as a distinct 

 species, and puts trimeni down as doubtfully distinct from simin. Marshall, l.c- 

 p. 419, is of oi)inion that trimeni and cuama are not distinct from antilope 

 (= simia). Our own research shows that trimeni is structurally the same as 

 cuama, and that both are constantly different in both s(!xes from antilope (= simia). 

 Thev are together a species distinct from antilope (= simia), trimeni being the 

 " wet phase " and e/tama the "dry phase." Tlie differences in colour and pattern 

 between the corresjiouding forms of P. antilope and /'. cuama are not very con- 

 spicuous, but nevertheless easily perceived if sjjecimens of both species are compared 

 Bide by side. The copulatory apparatus of the cJ of /*. euama is recognisable at a 



