no back toe, but in lieu thereof a strong claw ; and its tail is rounded. 

 It may be thus characterized : 



4- PuFFiNus FULiGiNosus. Pvff. brunneus sepicolor ; alls satvratiori- 



bus ; guld griseo leviter tinctd ; rosi>-o concolore ; tarsis extern^ 



digitisque externis brunneis ; tarsis interne palamisque fusco- 



ochraceis. 



Long. 18 unc. ; alee, 12; tarsi, 2^; digiti medii, 2-^; rostri, a 



rictu ad apicem, 2^, a fronte ad apicem, I J. 

 Mr. Strickland concluded by remarking, that although a single and 

 perhaps purely accidental instance of a species appearing in this coun- 

 try may not fully entitle it to be ranked as a Biitish bird, yet that the 

 circumstance is worthy of being noticed, as it is only by carefully 

 recording such instances as do occur that we can decide what is en- 

 titled to that appellation, and be thereby enabled to perfect our local 

 catalogues. 



At the lequest of the Chairman, Mr. Gould exhibited numerous 

 specimens of two JJircZi hitherto confounded under the name of Mota- 

 cUlaJlava. In a communication which accompanied his exhibition, 

 Mr. Gould explained the differences between the species, and entered 

 at some length into their history. One of them, the yellow Wagtail 

 of England, was described by Ray under the name of Mot.Jlava : 

 its head is of a fine olive colour, and the stripe above and below the 

 eye is of a bright yellow. The other, the Mot.Jlava of Linnteus, has 

 the head of a lead colour approaching to blue, and the stripe above 

 and below the eye of a clear white. The latter bird does not appear 

 t) have been ever met with in England : it is the one described by con- 

 tinental authors under the Linnean name ; while British writers have 

 as constantly described under that name the bird to which it was 

 originally given by Ray, and which regularly visits their own country. 

 For Ray's bird, Mr. Gould suggested that the name of Mot. Jlava, 

 under which it was described by our illustrious countryman, ought, 

 according to the established rules of nomenclature, to be retained. 

 To that of Linnaeus, M. Temminck, and other continental authors, 

 he proposed to apply the name of Mot. neglecta. 



The species may be thus characterized : 



MoTACiLLA FLAVA, Ray. Mot. suprH olivaceo-viridis, subtils flava ; 

 rectricibus duabus lateralibus dimidiato oblique albis ; capite oliva- 

 ceo ; strigd supra- et infra-ocuJari flavd. 

 Fcem. Coloribus nuKjis obscuris ; capite dorso concolore; strigis 

 ocularibus obscure flavis. 



MoTACiLLA NEGLECTA. Mot. svpril oUvaceo-viridis, subtiis flava ; 



rectricibus duabus lateralibus dimidiato oblique albis ; capite plum- 



beo ; strigd supra- et infra-oculari albd. 



Foem. Coloribus inagis obscuris ; capite plumbeo-olivaceo ; strigis 



ocularibus ininiis conspicuis. 



Mr. Gould further remarked, that the differences pointed out in 



these characters do not depend upon season ; there being on the 



table specimens of Mot. neglecta, the blue-headed JVaglail, from Swe- 



