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X. Butterflies of Southern Kordofan, collected by Captain 

 R. S. Wilson. Lancashire Regiment. By G. B. Long- 

 staff, M.A., M.D., F.L.S. 



[Read May 3rd, 1916.] 



With Map. 



A valuable addition lias been made recently to the Hope 

 Collection at Oxford in the shape of a number of but let Hies 

 from the Nuba Hills in Southern Kordofan, presented by 

 Mr. C. A. Willis, late an Inspector in the Civil Service of 

 the Anglo-Egyptian Sudan, but now Assistant Director of 

 Intelligence at Khartum. 



The butterflies were collected by Captain R. S. Wilson, 

 of the Lancashire Regiment, more than ten years ago, 

 in November and December 1904, but owing to various 

 circumstances they were not examined until recently. 



The collection comprises 223 specimens belonging to 

 62 species of butterflies, and one moth, all from the hilly 

 country lying between El Obeid on the north and Lake 

 No on the south, and between Darfur on the west and the 

 White Nile on the east, and is especially interesting 

 since little or nothing has been published concerning the 

 butterfly fauna of that remote part of the world. 



To speak more preciselv, the area to be dealt with lies 

 between Lat. 12° 40' N. and Lat, 10° 40' N.— a distance of 

 about 120 miles, and between Long. 29° 40' E. and 30° 

 31' E.— about 90 miles. 



Although none of Captain Wilson's collecting ground 

 is nearer to the White Nile than 90 miles, it all lies within 

 the basin of that river, and it was for that reason that I 

 was asked by some of my Oxford friends to write a memoir 

 setting forth the geographical relationship between tin- 

 insects in Captain White's collection and those previously 

 dealt with by me in a paper entitled " The lint t erll 

 the White Nile : A study in Geographical Distribution." * 



Naturally, my first desire was to gel into communication 

 with the collector, but war conditions made this impos- 



* Trans. Ent. Soc. Lond., L913, pp. II 56. 



TRANS. ENT. SOC. LOND. 1910. — PART II. (DEC) 



