Hamilton. — On Avian Remains in Southland. 



101 



Castle Eocks — 



Length — a, 62mm. ; b, 59mm. ; c, 60mm. ; d, 65mm. ; 



e, 62mm. 

 Width — a, 21mm. ; b, 19mm. ; c, 20mm. ; d, 21mm. ; 



e, 20mm. 



The position of the group of foramina above the tubercle 

 for the tibialis anticus is very variable, and in A. aus trails 

 they are more or less deeply sunk in a pit. In A. oioeni they 

 are more apparent, and the two lower vary in position a good 

 deal : numbers of cases can be found in which one is lower than 

 the other. In A. oioeni there is a strong ridge down the face 

 of the bone from the attachment of tibialis anticus, in the 

 majority of cases. From these variations I am convinced 

 that the genus Pseudapteryx has been founded on an individual 

 variation, and that the bone has no claim to even specific dis- 

 tinction. 



Measurements of the Extreme Lengths of the Skzdls of 

 Apteryx australis. 



This list shows the remarkable variation in the length of 

 the skull of Apteryx australis. The measurements clearly 

 show two groups, one from 128mm. to 148mm., and one from 

 162mm. to 175mm. These are probably sexual distinctions. 

 Only skulls of apparently adult individuals were measured for 

 this list. 



I append some diagrams (Plates VII. and VIII.) represent- 

 ing the measurements of the long series of Apteryx bones 

 obtained. The first table for each bone shows the number of 

 specimens, with the length in millimetres. The second table 

 shows the same divided into rights and lefts. Considering the 

 mixed condition of the bones, and allowing for other circum- 

 stances, such as accidental fractures, &c, the correspondence 

 of the two sides is practically equal. It should be again stated 

 that all imperfect or non-adult bones were excluded. 



Moa. 



During the excavations I found several moa skeletons under 

 circumstances of great interest, for in at least three instances 

 the bones of the legs were found in such a position as to leave 

 no doubt as to their 



belonging to the one individual- 



-m two 



