592 Mr. J. H. Stenhouse : [Ibis, 



Hirundo r. rustica. 2 ? . 



First seen 11^ February, 1919, and in 1920 on 7 February. 

 Observed collecting mud for nests on 7 March, and at 

 Laguna de la Janda had young nearly fledged on 29 April. 

 The breeding birds took their departure from Gibraltar 

 " about 15 Auoust, when it was noticed their numbers had 

 greatly diminished. After that date their appearance was 

 irregular and they were consitlered migrants from the north. 

 On 22 October after a strong east wind they arrived in 

 hundreds. They were last seen 7 November. 



Hirundo rufula. 1 S • 



A single bird was seen at the Laja del Ciscar near Laguna 

 de la Janda on 26 April, 1919, hawking for flies in company 

 with Martins and Crag-Martins. On 2 May, 1920, a pair 

 were seen at Don Pedro ('liff about eiglit miles distant from 

 C'iscar. They were settling down collecting mud and were 

 evidently preparing to breed. ^Vhere these birds were 

 found was about thirty miles distant from the Moorish coast, 

 and as they are found in Morocco there is no reason they 

 should not, at times, cross the Straits. Col. Verner 

 informs me that a bird of this species had been seen in the 

 same neighbourhood several years before. 



Delichon urbica meridionalis. 2 c? ; 4 ? . 



First seen in 1919, 29 March, and in 1920, 14 March. Tlit y 

 breed in large numbers at Algeciras and in many cliffs 

 around. The bi'eedinji- birds at Algeciras left the district in 

 the first week of August, and only odd birds were seen after 

 the 7th of that month. The wings of two males measure 

 105 and 101 mm., of the four females 100, 101, 102, and 

 105 mm., being, with the exception of one male, within the 

 measurements given for this subspecies. This one bird is 

 also the only one whose measurement between secondaries 

 and the tip of the wing equals that of typical birds measured. 

 Under these circumstances, and taking into account that in 

 autumn the local birds migrate two months before the 

 northern birds appear, I consider the placing of them, for 

 the time at least, in this group justifiable. 



