4 ' DK. W. J. HOLLAND ON THE AFEIOAN [Jan. 14, ' 



in my collection with the types in the Berlin Museum and in tlie 

 Museums of Paris and London. But great as is the debt of 

 gratitude I owe to these valued friends and colabourers, it is even 

 exceeded by my obligations to Dr. Otto Staudinger of Dresden, 

 v\'ho entrusted to the ocean all the types of African Hesperiidce 

 and all the unnamed material in his vast collection, and freely 

 sent them to me for purposes of study and comparison. Eor this 

 act of great generosity I cannot sufficiently thank him. 



In submitting the following pages to the attentive consideration 

 of specialists, it is with a sense of the manifold defects which must 

 in the lapse of time be found to be contained therein. With the 

 exercise of the utmost care, and with all the help of the learned, 

 errors are unavoidable. In all cases where doubt attaches in my 

 mind to a generic reference, it is indicated. Absolute certainty in 

 this respect is not easily attained in some cases. While two-thirds 

 of the species accredited to the African fauna are represented in 

 my own collection, in some cases by enormously large series of 

 specimens, and I have seen in nature probably four-fifths of the 

 species of the Ifesjoenidw which have been described as coming from 

 Africa, nevertheless in not a few cases I have been compelled to 

 rely wholly upon illustrations and the suggestions of resemblance 

 made by authors for an approximate location of the species. Tet, 

 in spite of the defects which must of necessity exist in this work, 

 I venture to express the confident belief that it will be found to 

 mark a distinct advance in our knowledge of the subject. 



EHOPALOCEEA. 



Fam. HESPEBIIDiE. 



Subfam. HespebiinjE. 



Saeangesa, Moore. 



(Hyda, Mab. ; £h-etis, Mab. ; Sape, Mab.) 



The differences of a structural character between the species 

 assigned to the genus Eretis, Mab., and Sarangesa, Moore, are so 

 slight as in my estimation not to justify a separation, except 

 subgenerically. The principle difference is in the waved outline, 

 of the secondaries and the relatively longer fringes in the form' 

 Eretis. 



- * Eretis, Mab. 



1. S. DJiELiEL^, Wallgr. 



•- Pterygospidea djtelalce, Wallgr. K. S. Vet.-Akad. Handl. 1857 ; 

 Lep. Ehop. CafEr. p. 54, no. 5. 



Nisoniades wnhra. Trim. Trans. Ent. Soc. Lond. (3) vol. i. 

 p. 289 (1862). 



Nison. djcelwlce, Trim. Ehop. Afr. Austr. vol. ii. p. 311, no. 204 

 (1866). 



