A iistralian Birch in the Collection of the Linnean Society. 263 



about. The people who accompanied him observed that they 

 must be lost, or they would never remain in so dreary a country. 

 — On the whole, however, he considered them as gregarious. 



Genus. Ptilonorhynciius. Kiihl. 



1. MacLeayii. Lath. MSS. Ptil. metallict ater; plumis ni- 

 tentibus sericeis, rostri apice pedihusquejlavescentibus. 



Fcem. supra viridis, subtus pallidior, macidis albis lunulisque fus- 

 cis variegata : pteromatibus, remigibus, rectricibusque rufo- 

 brumieis. 



Mas. Pteromatn atra apicibus metallicè nitentibus. Rcmiges 

 rectricesqne atrœ sine nitore, subtus fuscescenti-atrœ. Man- 

 dibulcB ad basin nigrœ, marginibus apicibusque flavescen- 

 tibus. Longitudo corporis, 12^; olœ a carpo ad remigem 

 quartam, 6f; caiidce, 4^; rostri ad frontem, -y^, ad ric- 

 tum, lyV ; tarsi, If. 



Fœm. Pileus olivaceo-viridis : nucha, dorsum, uropi/giumqxie 

 olivacescenti-virides ; rhachibus plumarum pallidioribus. 

 Genarum plumarum rhaches albte. Guke plumte albœ mar- 

 gine gracili fusco. Juguli plumaî in medio albidœ fusco- 

 marginatœ, rhachibus albis : pectoris abdominis tvm/({ue 

 plumœ flavescentes, in medio lunula transversa fuscâ fasci- 

 atee, rhachibus albis. Fteromatum retnigumque secunda- 

 riarum internarum apices fulva?, tœniâ pergracili pallida 

 terminatee. Tectrices inferiores albidœ, fusco-maculatai lu- 

 nulata^que. Remiges subtus pallidè fuscescentes, basi in- 

 terne fulvœ. Rectrices subtus pallidè fuscae, basin versus 

 pallidiores. Rostrum nigrum. Pedes pallidè fusci. Di- 

 mensiones corporis paul6 grandiores quàm in mari. 



In honorem Alexandri MacLeay, Armigeri, Societatis Lin- 

 neanœ nuper Secretarii, qui collectionem Australem avi- 



bus 



