( 269 ) 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)