MK. R. B. SUATIPE OK TUE OIUSTTTHOLOGT OF NEW GUINEA. 305 



Simultaneously with the formation of the siliceous investment 

 certain changes are going on in the interior. The nucleus divides 

 into two ; and each half, surrounded by a peculiar clear area, recedes 

 more and more from the other. The pseudopodia remain at first 

 quite unchanged and fully extended ; but by the time that the 

 siliceous case is completed they have become entirely withdrawn, 

 while the dark central body lias at the same time disappeared. 



The condition thus attained is probably a true encysted or 

 resting-state, to be succeeded by a division of the contents; but 

 Schulze was uuable to follow it to its ultimate destination. 



The various organisms which I have now passed before you in 

 review are confined to certain more purely Amoeboid forms and 

 to the recently established group of the Heliozoa. We are in- 

 debted, however, to recent investigations for our knowledge of 

 many other sarcodic beings, which, whether regarded in their 

 completed forms or in their developmental history, are of great 

 interest. Their introduction here, however, would extend the 

 present address to a length far beyond its legitimate limits ; and 

 their consideration must therefore be deferred to a future occa- 



Contributions to the Ornithology of New Guinea. By R. 

 BowDLER Sharpe, T.L.S., E.Z.S., &c. Part II.— On the Or- 

 nithological collections formed by the late Dr. James in South- 

 eastern New Guinea and Yule Island. 



[Eead March 15, 1877.] 



The localities where the collection now about to be described was 

 formed, are well known to naturalists as the hunting-grounds of 

 the Italian traveller D'Albertis, who has made us acquainted with 

 the features of the ornithology of Yule Island and the opposite 

 coast of New Guinea. A melancholy interest attaches to the 

 present collection of Dr. James ; for it is at once the first, and last, 

 that we shall receive from him. This young naturalist, whose 

 career as a traveller commenced so favourably, and whose energy 

 trampled on so many difficulties, was mxirdered by natives, as 

 mentioned in a communication of the Eev. S. Macfarlane in 

 ' Nature ' for Nov. 16, 1876 :— " We have just heard of the 

 massacre of Dr. James and his partner, a Swede, at Yule Island 



