Hamilton. — On Avian Remains in Southland. 103 



with four or five species ; there is only one in the North 

 Island. It is in the South also that we find the greatest diver- 

 sity in the development of the Dinornithida and Apterygida. 



I have appended below a table of measurements of a series 

 of bones of the northern species (0. greyi, Buller), from 

 Hawke's Bay. The measurements of the rights and lefts in 

 the individuals varied so little that I have not given separate 

 measurements. 



Ocijdromus, sp. : There were indications in the remains 



from the cave of a species which coincides almost exactly with 



the measurements given by Von Meyer" of 0. sylvestris, Scl., 



from Lord Howe's Island. The measurements show that it 



was much smaller, and the bones are proportionately more 



slender in all their parts than any other of the existing forms, 



and I bad in the first draft of this paper proposed the name 



of 0. minor ; but I can hardly venture to inflict a fresh name 



without a larger series of measurements for comparison. The 



specimens in the collection are two pelves, seven femora, six 



tibiae, and five metatarsals, and the upper portion of a 



sternum. 



Castle Kocks TT , T 

 o • Von Meyer. 



Specimen. J 



mm. mm. 



Pelvis, extreme length 



Pelvis, extreme width 



Femur 



Tibia 



Metatarsus 



Sternum, greatest breadth (pleurost.) 



An account of the habits and history of 0. si/lvestris, Scl., is 

 given in a recent memoir of the Australian Museum on Lord 

 Howe's Island,] at page 13. The table on page 17 records this 

 species as occurring in New Zealand as well as New South 

 Wales. On page 18, however, it states that Ocydromus as a 

 genus is not found in the Australian region. Possibly, how- 

 ever, the table may have been the victim of the printer, as in 

 several instances the "species" is marked as occurring in 

 New Zealand, but not the " genus " ! 



In the table of measurements of Ocijdromus there is an ex- 

 ample of a North Island specimen which approaches closely 

 the measurements of 0. sylvestris as far as length is concerned, 

 but the difference in relative bulk is considerable. 



* Abbild. von Yog. Skel., iv. and v. Lief., Taf. xli., p. 33. 

 t Memoirs of the Australian Mus., Sydney : No. 2, Lord Howe's Island. 

 188'J. 



