24 Dr. G. B. Longstaff on 



Family LYCAENIDAE. 



19. Polyommatus baeticus, Linne. 



Taken by Dunn on the Bahr al-Zarafa; by Loat near 

 Kaka, and at Gondokoro ; by Selous near Tawila, and by 

 the Swedish expedition at Khartum, Ad-Duwem, and 

 Mohadan Zarafa. 



I found it in abundance at Khartum in 1909, and also 

 met with it at Ad-Duwem. In 1912 I found it again at the 

 last-named place, and also at Rejaf. 



This, probably the most widely-distributed of all the 

 " Blues," may be said to occur throughout our district, 

 but it would not appear to be plentiful except at Khartum. 

 Rothschild speaks of it as " common in Egypt from Cairo 

 to Khartum." He also took it at Al-Nakhila, on the 

 Atbara River. I have myself taken a few specimens near 

 Cairo and have seen it in some numbers at Aswan. 



It is common at Aden and it has been recorded from 

 Abyssinia and Somahland, and has a wide range in South 

 Africa, as well as in Europe, Asia and AustraUa. 



20. Lachnocnema bibulus, Fabricius. 



The Swedes took two very dwarfed males on Abba Island 

 [Lat. 13° 22' N.]. 



This species has a wide distribution in South, Central, 

 East, and West Africa, but I have no other record for the 

 White Nile. 



21. Tarucus theophmstvs, Fabricius. 



Loat met with this common and widely-distributed insect 

 at Kaka, Mongalla and Gondokoro. The Swedes took it at 

 Khartum, Abba Island, Renk and Kaka. 



In 1909, besides seeing it in abundance at Khartum, I 

 took it at Soba (on the Blue Nile), at Ad-Duwem and at 

 Tawila. In 1912 it was again abundant near Khartum as 

 well as near Soba station, and on the battlefield of Kerreri. 

 Up the White Nile it occurred at Ad-Duwem (commonly), 

 Duleb, Shambi (several), Tombe, Kiro, Mongalla, Gondo- 

 koro and Rejaf, as well as on the Bahr al-Zarafa. 



Mr. Rothschild took it commonly at Al-Nakhila and at 

 Shendi, but found it rare at Khartum. In 1909 I took one 

 at Wad Ben Naga station, about twenty miles south of 

 Shendi, as well as at Aswan and Luxor. 



