106 SYI.VIAD.TC. 



S. Javanica. S. borealis. S. icterina. 



DIMENSIONS, Inch. Lines.. Inch. Lines. Inch. Lines. 



Lengtli of wing 2 3.2. 2 5.4. 2 6.0. 



Length of tail 1 7.8. 1 8.8. 111.5. 



Head with beak 1 1.3. 1 2.2. 1 0.5. 



Beak from nasal orifice. .0 3.4. 3.6. 2.6. 



Tarsi 9.0. 9.0. 8.8. 



1st. Aving feathers longer 



than the upper coverts 3.0. 1.0. 4.0. 



4. S. pi7ietoru7n,^xe\m\; 5. >S'. arSws^forwm, Brelim; and 

 6. S. hydrophilos, are considered by Brelim to differ 

 from the E.eed and Sedge "Warblers, to wliich tbey are 

 respectively closely allied. 



7. >S'. Moussieri has been stated to have occurred in 

 Europe by Herr L. Alph Galliard, but this is discredited 

 by Miihle; it has however been introduced by Dubois. 

 Mr. Salvin states (Ibis, vol. i., p. 307,) that it is ex- 

 clusively a North African species. 



Mr. Tristram remarks that this species is a very local 

 one in Africa, never, in Algeria, crossing the Atlas, and 

 in Tunis only approaching the coast at the south-west 

 corner of the gulf of Cabes. It is chiefly an inhabitant 

 of the Oases, where it is a constant resident. 



8. S. ochrogenion, Lindermeyer, (Isis, 1843,) is the 

 female of S. melanocephala ; the yellow colouring observed 

 on the throat is considered by Count Miihle to be pro- 

 duced by the fruit of the Cactus opuntia. 



9. S. syloestris , Naumann, (App. xiii, p. 429, table 

 369.) — Under this head Count Miihle enlarges upon the 

 difficulty of separating many forms of the Willow Wrens, 

 and hints at the possibility of this proving a fifth species. 



10. S. horticola, Brehm, (jSTaumann, xiii., p. 444.) — 

 Once more, says Count Miihle, we have to deal here 

 with a bird out of the great Brehm sub-species manu- 

 factory. 



