Mr. W. C. Hewitson oti new Species of Hesperidse. 347 



The name Nocttltomdcej Gray, must therefore be rejected 

 altogether bj those who adopt my classification ; and it is 

 evident that, as Dr. Peters's families Brachyura and Molossi 

 are united by me in a single family, it would be very undesirable 

 to designate the new family thus formed by either of these 

 names, which previously indicated only a section of it. 



XXXIII. — Description of twenty new Species o/ Hesperidae. 

 By W. C. Hewitson. 



Ismene Taranis. 



Alis anticis supra cinereo-fuscis : posticis fuscis, fimbria alba, ad an- 

 gulum analem fulva : posticis infra fascia triangulari alba puncto 

 atro notata, macula fulva subanali. 



Upperside brown, covered more or less, and especially near 

 the base of the posterior wing, with grey hair. Posterior wing 

 dark brown beyond the middle : the fringe, except at the anal 

 angle, where it is orange, white. 



Underside grey-brown. Posterior wing with a large central 

 white spot marked by a round spot of black : a triangular 

 orange spot near the anal angle : the fringe as above. The 

 body beautifully tessellated with orange, black, and white. 



Exp. 2\ inches. 



Hah. Zanzibar. 



In the collection of Dr. Staudinger. 



Near to /. Pansa^ Hew., from Madagascar. 



Ismene Bixce. 

 Ismene JBixce, Clerck, Icones, pi. 42. fig. 4. 



Ismene Chalybe. 



Ismene Chalybe, Doubleday & Hewitson, Genera of Diurnal Lepidoptera, 

 pi. 79. fig. 2 ; Donovan's Nat. Repos. v. pi. 166. 



The two butterflies I have quoted above, which have been 

 considered as one, are very distinct species, as will be seen at 

 once on comparing Clerck's and Donovan's figures of the 

 undersides. In /. Bia^ce the posterior wing is protruded at the 

 shoulder, and has the white spot at a distance from the 

 margin. In /. Chalybe the wing is of the ordinary form, and 

 the white spot touches the margin. I have not quoted Lin- 

 naeus, because his description will apply to either species, and 

 Clerck's figure has the priority. 



