14 Transactions. — Zoology. 



Akt. IV. — On Anomalopteryx antiqua. 

 By Captain F. W. Hutton, F.K.S. 



[Read before the Philosophical Institute, of Canterbury, 7th September, 



1892, .] 



Plate IV. 



In my paper on the moas read to this society last year I men- 

 tioned some moa-bones which had been found under a lava- 

 stream near Timaru, and named them Anomalopteryx antiqua. 

 The description was very imperfect, as I had only seen two 

 fragmentary tibia;, both of which were much hidden by the 

 matrix in which they were imbedded. I also mentioned that 

 two fragments of a metatarsus, free from matrix, had been 

 found, but that I had not been able to see them. These frag- 

 ments are shown in the plate accompanying my paper (PL IV.), 

 which is taken from a photograph given me by Mr. G. Hogben. 

 They are still missing, but while they were in Mr. Forbes's 

 possession he had moulds made in the museum, and from 

 these I have obtained casts which enable me to add con- 

 siderably to my former description of this interesting bird. 

 These casts consist of two fragments of a right metatarsus and 

 a small portion of what may be the shaft of a femur. 



Proximal Portion of the Metatarsus. Plate IV., figs. 1, 2. 

 The width is 51mm. (2in.), and the depth, from the bottom 

 of the hypotarsal groove, is 34mm. (l-33in.). The intercondy- 

 lar ridge is high, projecting in front and rising considerably 

 above the hypotarsal groove : the outer condylar depression is 

 considerably broader and shallower than the inner. The 

 ectocondylar ridge is also high. The inner margin is simply 

 rounded without any longitudinal ridge on the tarsal portion 

 of the bone : the anterior margin is rather strongly sinuated, 

 showing two concavities, one on each side of the intercondylar 

 ridge. The hypotarsal groove is shallow, owing to the slight 

 development of the inner ridge ; but the outer ridge is well 

 developed and much broader than the inner one. The inter- 

 osseous canals, between the metatarsals, open anteriorly 

 together in a deep but small pit, as is usually the case in the 

 Diuornilhidce, and the rough surface for the insertion of the 

 tendon of the tibialis anticus is small. 



Distal Portion of the Metatarsus. Plate IV., figs. 3-5. 



In this fragment the outer trochlea and the outer por- 

 tion of the' middle trochlea are missing. The inner troch- 

 lea has a width of 18mm. on its anterior surface, and 



