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XV. Observations on some South-African Butterflies enu- 

 merated in the " Catalogue of Diurnal Lepicloptera 

 of the Faiuily Satyridae in the Collection of the 

 British Museum. By Arthur Gardiner Butler, 

 F.L.S., F.Z.S., &c., London; 1868/' By Roland 

 Teimen. 



[Eead 2nd November, 1868.] 



Having received, through the liberality of the Trustees, 

 a copy of the British Museum Catalogue of Satyridcc lately 

 published, I wish to ofiPer a few remarks respecting some 

 of the South- African species included in that volume. 



My remarks relate to the genera — 

 Le2otoneura, 

 Pseiidonympha, 

 Neope, 



Mycalesis, and 

 Yphthima. 



Leptoneura cassina, Butler, sp. nov. 

 (Cat. Satyr, p. 72, pi. ii. fig. 12.) 



Closely allied as this form is to the typical Cassus, 

 Linn., I am disposed to think that Mr. Butler is right in 

 treating it as distinct. It appears, as far as I have been 

 able to observe, to frequent quite a different locality from 

 that inhabited by the ty]3e-form, and never to mix with 

 the latter. I have described the form now named Cassina 

 in the following terms (Rhop. Afr. Aust., ii. p. 196): — 

 " Specimens found on the sandy flats are invariably much 

 smaller and darker than those inhabiting the hills, the 

 markings of some males being all but obliterated, so that 

 the surface is almost unicolorous. The ochreous colouring 

 of the imderside, too, is wanting in the lowland examples, 

 being represented by irregular grayish scaling, conspic- 

 uous on the dark ground." 



TRANS. ENT. SOC. 1868. — PART IV. (dECEMBEr) . X 



