( 49 ) 



30. *Muscicapa hypoleuca hypoleuca (I'lilL). 

 (= M. atrieapiU'i nfrirnpiUa iuici.) 

 Cf. Noe. Zool. xviii. p. 503. 



Mr. Hilgert saw one at El-Golea on March 27. 



Not rare on passage in the oases of Tidikelt from Ai)ril 1.5 to 24, and again 

 in the Sonthern Oned Mya region, in the Oned Tinbonrljar, on May 5. 



31. -Muscicapa striata striata (Pall.). 



(= }[. ijn.fnh anct.) 

 Cf. Xiic. Zrml. xviii. p. 50.3. 



The Spotted Flycatcher passed through the Sahara from Mayo to the beginning 

 of June, the last being seen on June 5. Specimens which we shot agreed in every 

 detail with Swedish and German ones, not with the dull Corsican M. striata 

 ti/rrhcnica. In 19U9 we were convinced that these birds would nest at Hammam 

 Meskontine, but now we doubt it very much, after seeing how late they jiass 

 through South Algeria. No bird should henceforth Ijc regarded as breeding in 

 Algeria, unless nest and eggs have been discovered. 



32. *PhylIoscopus trochilus (L.). 



C!f. Xuc. Ziiul. xviii. p. 504. 



From March 20 (El-Golea) a more or less common migrant, especially at 

 In-Salab, from the middle of April to the 22nd. 



On May 1, in the southernmost Oned Mya, about 00 km. north of Aiu Guettara, 

 this species was not rare — though more so than hotidli — iu the large Tamari.x 

 trees, and those seen appeared to be very pale. They belonged perhaps to 

 F. trochilus ecersmanni. A female which we skinned has a wing of 04 mm. It is 

 whiter on the abdomen than one shot at In-Salah on .April 17. It is, however, not 

 easy to distinguish P. t. eversmuimi. 



33. *Phylloscopus collybita collybita (Vieill.). 



Cf. Nuv, Zuitl. xviii. p. 50li. 



Common migrant from March 8 to the end of April. 



34. *Phylloscopus sibilatrix (Bechst.). 

 Cf. Voij. pal. Fauna i. pp. 515, 51G ; Noo. Zuul. xviii. p. 503. 



We observed and shot this species in the gardens of El-Golea on May 15 and 10, 

 and as late as May 23, 145 km. south of Ghardai'a. 



These specimens iirc not particularly liright, and agree better with Fh. s. 

 sihdatri.r. than with the Mediterranean /'//. .■<. crlanycri ; the latter is, perhaps, a 

 doubtful race. In the first instance the late (Jarlo von Erlanger described it as 

 F. s.Jlacescens, a preoccupied name, chiefly on the strength of an aberrant specimen, 

 and I recognised it partly on account of the different song wliich it is su|)posed 

 to have ; 1 am, however, now very doubtful if that observation is convincing, as 

 probably the whirring song is not uttered except in the breeding season, and we have 

 still no proof of the breeding in N.W. Africa. Could not all the late birds observed 

 in Manretania be still migrants ? With regard to the l)righter coloration of Nortli 

 Mediterranean specimens, more material should perhaps be compared in order to 

 establish tiie race urlaiiijeri for good. 



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