Zoological Club of the Linnean Society. 503 



with an attempt to prove its identitjj with the Pipistrelle of French au- 

 thours: by the Rev. Leonard Jenyns, M.A., F,L.S., were read. 



The Common Bat of our country having been referred by every syste- 

 matic writer from the time of Pennant to the present day to Vespertilio 

 murinus, Linn., Mr. Jenyns points out the great difference between our 

 Bat and that to which continental authours give the Linnean name, both 

 in colour, general appearance, the shape of the auricle and its opercu- 

 lum, and in the relative dimensions and absolute size. He considers 

 the species of the foreign authours to be the Vesp. murinus : and he 

 states that all our English writers, including Griffith and Fleming, have 

 only repeated Pennant's description, or translated Linnaeus's specific 

 character. He then concludes that our Conmion Bat is the Pipistrelle 

 of Daubenton and succeeding writers. 



The authour adds some interesting observations on the habits of Bats : 

 each species, he finds, have their pecuUar place of concealment ; also 

 that the same increase of temperature which will revive them from tor- 

 pidity early in the winter, will not have that effect (nor will even a much 

 higher one) after they have been rendered completely torpid by severe 

 frost. 



ZOOLOGICAL CLUB OF THE LINNEAN SOCIETY. 



June 10, 1828. — Mr. Yarrell exhibited preparations of the <?acAeffi of 

 several birds, including those of the TetraoUrogallus, Linn., of the Crux 

 Elector, Linn., and of the Platalea Leucorodia, Linn. He remarked 

 that the deviation from the simple form of a cylindrical tube passing di- 

 rectly from the larynx to the hronchice, which is common to the greater 

 number of birds, commences among the rasorial group, that of the Te- 

 trao Urogallus exhibiting one of its earhest stages. In this there is 

 merely an elongation of the trachea without any marked fold, a portion 

 of that organ lying loose among the muscles and cellular substance of 

 the neck. The deviation from the typical form increases and becomes 

 in Crax, and especially in JVumida, Linn., a distinct fold. Among the 

 Grallatores it attains a yet higher degree of developement, particularly 

 in the Gruidcs. la Platalea it is formed by a strongly marked fold, 

 which, however, lies loose in the cavity of the thorax, and is not attached 



