Vol. xxxiii.] 130 



Calamocichla leptorhyncha nuerensis, subsp. n. 



Adult male (in fresh plumage). Similar to C. leptorhyncha 

 (Reichenow) found from Abyssinia to the Zambesi, but 

 darker on the rump and probably on the whole of the upper 

 surface ; underparts greyer and altogether duller, especially 

 on the flanks. The basal half of the lower mandible and 

 inside of the mouth of a deep bright orange, very striking 

 in freshly killed specimens, and after three months still 

 conspicuous in the skins collected. Iris tawny; upper 

 mandible sepia; lower mandible deep bright orange, tinged 

 with sepia on the terminal half ; legs, feet, and claws dark 

 olive-sepia. 



Adult female. Similar, but a trifle smaller. 



Measurements of 16 birds, all from the Nuer Territory ; 

 in 8 of these the sex was not determined ; 9. ii. 14— 

 4. iii. 14 : — 



' 5 $ . Wing 63-67 mm. ; tail 61-63 ; tarsus 24-25 ; hind 

 claw 8-9. 



3 ? . Wing 59-62 mm. ; tail 58 ; tarsus 23-24 ; hind 

 claw 8-9. 



Hah. The papyrus-jungle of the Upper White Nile (Nuer 

 Territory), probably ranging southward and resident all 

 through the " Sudd J " region. 



Types in the British Museum: $. No. 410, 25. ii. 14 ; 

 ?. No. 594, 24.ii.14. 



Obs. In comparing these skins of the Nuer Lesser Reed- 

 Warbler with C. leptorhyncha in the British Museum and 

 Tring Museum, allowance had to be made for "wear/' since 

 no equivalent plumages were available. In other species of 

 Calamocichla it is apparent that as the plumage gets worn 

 the olive and olive-grey tints change to a dirty brown, and 

 the birds become paler on the under surface. 



The juvenile plumage is very different to that of the adult, 

 being generally tawny. 



Dr. Rendall describes a breeding male of C. leptorhyncha 

 from the Upper Shire River as having the lower mandible 

 pink- white and the gape yellow. 



The much larger Calamocichla ansorgei Hartert, which is 



