1891.] FROM SOUTH-WESTERN AFRICA. 77 



parison with the much darker female of true C. natalensis, with 

 the exception, however, of the underside markings just referred to, 

 which are heavier in the latter than in C. amazula, Mabille. 



It is not improbable that the discovery of the female may render 

 necessary the separation from O. natalensis of the differently and 

 more brightly tinted form brought to notice by Mr. Eriksson. 



26. Crenis BENGUEL.E, Chapman. 



(S . Crenis benguelce, Chapm. Ent. M. Mag. viii. p. 175 (1872). 



c? $ . C. benguelce, Dewitz, Nov. Act. Leop. -Carol. Deutsch. A.kad. 

 Naturf. xh. p. 1/9, pi. xxv. fi". 1, 2 (1879). 



Ehanda (August-September) and Otiembora (November- 

 December). Six male examples. 



The specimens of this striking Crenis are considerably larger than 

 Dewitz's figure of a male from Chinchoxo, expanding 2 in. 5|- to 

 7 lin. ; and the black markings of the upperside are better developed, 

 especially the apical hind-marginal border of the fore wings, which 

 emits rather long nervular rays, and the discal spots of the hind 

 wings, which are four or five in number, instead of two only. In 

 all the sjjecimens (except one from Ehanda) there also appears on 

 the upperside of the fore wings a submarginal series of very small 

 indistinct internervular black spots, corresponding to the series of 

 larger ones on the underside. 



27. Crenis rosa, Hewits. 



$. Cre7iis rosa, Hewits. Ent. M. Mag. xiv. p. 82 (1877); 

 Trimen, S.-Afr. Butt. i. p. 255 (1887). 



cJ . Crenis pecliuelii, Dewitz, 1. c. p. 195, pi. xxvi. f I (1879). 



6 . Crenis rosa. Trim. 1. c. iii. p. 403 (1889). 



Otiembora (November-December). Eleven male examples. 



1 have noticed these specimens iu the third volume of my ' South- 

 African Butterflies ' above quoted, and pointed out the characters 

 distinguishing the male from the female type of the species. Un- 

 like its near congener, C. benguelce, this most beautiful Crenis is 

 recorded from a very wide range in Africa, including Lake Nyanza 

 and Delagoa Bay. 



In the male the tint of the upperside varies, some specimens being 

 bluer and others pinker in tinge, and the black markings vary a 

 little in size and distinctness. On the underside there is considerable 

 variation iu the width of all the shining greenish-white markings of 

 the hind wings. 



28. Crenis Concordia (Hopff.). 



2 . Harma Concordia, Hopff. Monatsb. k. Akad. Wissenscli. 

 Berl. 1855, p. 641 ; Peters, Reise Mossamb.; Ins. p. 391, t. xxii. 

 if. 3, 4 (1862). 



Omrora (Ist-lOth August). One female example. 



It is remarkable to find this apparently very rare species, founded 

 on a single female specimen from Querimba, occurring some 4° 

 further S. on the opposite side of the continent. 



