Linncean Society. 387 



gratitude the aid he may have received from several of our most 

 lifted members, who, unambitious of personal fame, have been 

 contented with the delightful consciousness of bemg sure, though 

 silent instruments, in urging on the advance of truth ;-and were I to 

 single out one individual specially characterized by this high quality, 

 I should name your first President, Mr. Greenough who by the de- 

 votion of the be^t years of his life to our science, and by an unbounded 

 liberality in throwing open to every student the vast accumulations of 

 his knowledge in geological geography, has produced results ot which 

 no one can form an estimate who is not acquainted with the intenoi 

 workings of our Society from its earliest beginnings. It is this kindly 

 principle of co-operation, the true latent heat of the Geo ogical bo- 

 ciety, so ready to manifest itself on every occasion fitted- to call it 

 forth, which, 'warming and vivifying our endeavours, gives us our 

 consistency and our strength, and enabling us to grapple with our 

 hundred-headed science, constitutes the main spring of our pros- 



^^^Pemit me, Gentlemen, in concluding this address, to offer you my 

 heartfelt wishes for the continuance of your triumphant career and 

 to assure you that I consider myself truly ennobled in havmg been 

 placed, for a time, at the head of a brotherhood united for purposes 

 so great, and knit together by such lofty and enduring sympathies. 



LINN^AN SOCIETY. 



March 20.— Description of a new species of Parrot from New Hol- 

 land : by Mr. Lionel Dietrichsen, F.L.S. n ^ u ■* 



The following are the characters of this bird, which is called Fsit- 

 tacus purpurea, or Purple-crowned Parrakeet : front yellow, crown 

 purple ; neck, back, wings, and tail, green ; throat, breast, and belly, 

 French gray; shoulders blue , and a nuchal collar of pale yellow- 



' Descriptive Catalogue of the Composites contained in the herba- 

 rium of Dr. Gillies; with some additions from other sources ; by 

 Mr. D. Don, Libr. L.S. . , , , 



This paper (the author observes) may be considered as supple- 

 mentary to, rather than in continuation of, his former conimunica- 

 tion on the Composita, which has already appeared i" ^^^^^ Society s 

 Transactions, vol. xvi. and which was noticed in the Phil. Mag. and 

 Annals, N.S. vol. v. p. 384. It is designed to include some further addi- 

 tions to the two families contained in that memoir, namely,Ca/ioracecE 

 and LabiatifiorcL. To the latter family there is given in the present 

 paper a very considerable accession of new species, for the greater paic 

 of which the author is indebted to his friend Dr. G. lies. These were 



01 wnicn ine auinor is inucuicu iw m^ ...^..v. .^.. ~-- 

 principally collected by that zealous naturalist on both flanks ot tne 

 Chilian Andes, between the parallels of 32° and 3f south, and wet 

 longitude 34° and 72° ; and they comprise some or the most singulai 

 and striking forms in this family. 'Some interesting species denvcd 

 from other sources, but particularly from the extensive Chilian col- 

 lections of Mr. 11. Cuming, (someof vvho.se intere.sting additions to e 

 .istcr science will be noticed in our report of the proceedings ot the 



., r) o ZiOOlOglCUl 



