HuTTON. — On Moa-hnnes at Kajnia. 635 



Megalapteeyx tenuipes. 



M. tenuipes and M. hectori (female), Lydekker. 



Only two metatarsi and a dorsal vertebra were found. 

 The dimensions of the best-preserved metatarsus are given 

 in the table ; the other was smaller, having a length of 

 18omm. 



Megalapteeyx hectori. 



M. hectori, Haast. 



M. hectori (male), Lydekker. 



Of this species there was one complete and well-preserve<i 

 leg, the dimensions of which are given in the table. It is 

 larger than the type, but has the same slim character ; while 

 M. tenuipes is stouter, and has a relatively shorter metatarsus. 

 The perforation in the groove between the third and fourth 

 metatarsal bones, which is given by Sir Julius von Haast as 

 a generic character, is not constant. 



Genus MEIONOENIS. 



In the femur the head is moderately long and the neck 

 much constricted below. The internal trochanterial surface 

 is deeply concave, sometimes even excavated. The shaft is 

 slender and rounded in transverse section ; the iinea aspera is 

 well marked, rarely broken. The popliteal depression is short 

 and rather shallow ; the two tuberosities are confluent and 

 situated at the apex of the depression. The distal inter- 

 condylar fossa is deep on the mside, variable on the out- 

 side. 



The length of the tihia is 10 to 12 times its raid-width. 

 The shaft is slender and straight ; its antero-outer surface 

 flattened in the middle. The distal extremity is moderately 

 expanded inwards ; the bridge and tubercle directed towards 

 the inner condyle. 



The metatarsals has a length of 4 to 5 times its mid-width. 

 The proximal articular surface has the mner margin ridged in 

 the middle. The proximal interosteal foramina open anteriorly 

 into a deep depression, on the inner margin of which there is 

 a small rough tubercle. There is often a distal interosteal 

 foramen in the groove between the second and third meta- 

 tarsal bones, and occasionally one between the third and 

 the fourth. The trochlear do not diverge very widely : the 

 second is longer than in the other genera ; its outer surface 

 has only a shallow depression, and its base is narrower 

 than that of the fourth. The gorge between the second and 

 the third is not so deep as that between the third and the 

 fourth. 



