196 NOVITATES ZOOLOGICAE XXI. 1914. 



fact, which we have seen so often among birds, that here, too, the southern form, 

 which migrates less far than the northern one, has shorter wings ; but, as we have 

 only ten specimens of the Algerian race, and as many European birds are equally 

 small, we are afraid it would be rash to separate the Algerian form as yet. 



The nests at Hammam Rhira were built in garden-houses, and in the angle 

 of a branch and the stmu of a Pinns Iialepensia. The eggs measure 18'2 x 13-7, 

 19-4 X 14-4, 11) X 14-4, lS-7 x 14-4, 17-4 x 13-7, and 17-3 x 14 mm.) 



4n. Phylloscopus collybita collybita (Vieill.). 

 Very common in April round Oran and Tlemcen. 



41. Phylloscopus trochilus trochilus (L.). 

 (^>mmon near Oran in April. 



42. Phylloscopus bonelli bonelli (VitilL). 



Not rare in the oak-forests near Oran (15. iv. 1913), where it was probably 

 nesting, also in the pine- wood above the town, on April 21. 



(At Hammam Rhira undoubtedly nesting, not rare in the pine-woods by the 

 end of May.) 



43. Cettia cetti cetti (Marm.). 



Heard singing in Ani/ido flonax out he western slopes of Djebel Blourdjadjo, 

 middle of April. 



44. Hippolais polyglotta (Vieill.). 



A male observed in full song on Djebel Aissa, about 15UU m. high, in small 

 Zizyphus bush. Testicles fairly swollen. 



45. Hippolais pallida opaca Cab. 



This bird was shot at Tlemcen on April 19. It was very common, and singing 

 lustily in May (May 7 and after) in the thickets of Tamarix, and other bushes in 

 the river bed near Ain Sefra, and also in the plantation at the foot of the dunes. 



On May 18 it began to build a nest, but we were too early for the eggs. 



40. Sylvia hortensis hortensis (Gm.). 

 {Sylvia orphea olim.) 

 Not rare in the oak-woods near Oran on April 15. Also on the hills above 

 Saida in olive-trees (22. v. 1913). 



47. Sylvia borin borin (Bodd.). 

 {Si/liia /wflei/cia auct. : errore I) 

 In tlie phuitiition of Ain Sefra on May 14, 1913. 



48. Sylvia atricapilla atricapilla (L.). 

 Oran and Tlemceu. 



49. Sylvia communis communis Lath. 

 Several in hedges and bushes near Tlemceu on April 2(), 



