526 Mr. Vigors 072 some nezD subjects of Zoology. 



tuyaux capillaires sont distantes les unes des autres et un peu 

 inclinees. Favart D^Herbzgni/, Diet. ij. p. 444. 



De Montfort, who considers this shell as the type of his genus 

 Clithon, (vol. ii. p. 327) observes in his description, " Son dos est 

 charge d' epines longues arquees, dont la derniere percee forme 

 un sinus a la levre exterieurcj les autres sont successivement 

 obliterees. 



I might adduce other testimonies to the same effect, but as I trust 

 that these are sufficient to prove that the statements I formerly 

 advanced are fully borne out by evidence, I shall abstain from fur- 

 ther remark, relying on your liberality for the insertion of this 

 necessary defence of the accuracy of my observations. 



I remain, yours truly, 

 Nov. 3, 1824. John Edwaiid Gray. 



Note. — During the time that this letter has been passing through the press, 

 the Baron de Feriissac has published his remarks on Mr. Swainson's and my 

 papers, in his Bulletin des Sciences Naturelles, [November, p. 318,] in 

 which he agrees with me in all the main points of my observations, and has 

 also referred to many of the above quoted Synonyma and plates. J. E. G. 



Art. LXV. Descriptions of some rare, interesting, or 

 hitherto uncharacterized subjects of Zoology. By N. A. 

 Vigors, jun. Esq. M.A. F.L.S. With Figures by 

 James De Carle Sowerby, Esq. F.L.S. 



[Continued from p. 418.] 



Classis. AvES. Auct. 

 Fam. PsiTTAciD^. Leach. 



The vast recesses of Australasia, which have supplied the na- 

 turalist with so many distinct and varied forms in every branch of 

 Zoology, have presented no groups where the general structure is 

 marked by more distinguishing, and if I may use the word, 

 national, peculiarities than the family before us. The Parrots 

 of that great division of the globe are not merely numerous in 



