niNORNITHID^. 253 



describer with Apteryx, the specimen has not the peculiar 

 curvature characteristic of the femur of that genus ; and 

 its proximal surface, in place of being concave as in the 

 latter, is convex as in Dinoniis. 



A. 93 a. Casts of the left tibio-tarsus and fibula. Originals figured, 

 op. fit. figs. 3, 4, and 7. 



A. 93 b. Cast of the left tarso-metatarsus. Original figured, op. cit. 

 figs. 1, 2. 



Tlie foUowing specimens iirohahlij indicate the female of this species. 



A. 45-46. An associated series of bones ; from near Lake Waka- 

 (/%.) tipu, Queenstown, Otago, South Island. These specimens 

 comprise the pelvis and sacrum, four posterior dorsal and 

 eight cervical vertebrae, three ribs, and the left femur and 

 tibio-tarsus. The femur and tibio-tarsus have nearly the 

 same proportions as in the type, but are larger. Thus the 

 femur has a length of 0,228 (9 inches), and a distal width 

 of 0,067 (2-6 inches) ; the length of the tibio-tarsus being 

 0,378 (13-9 inches), and the width across the distal 

 extremity 0,047 (1-85 inch). The pelvis (fig. 61) 

 resembles that of Dinornis in the narrow form of the 

 postacetabular portion, and in the circumstance that the 

 lower border of the postacetabular region of the ilium 

 is flat and does not descend below the level of the anterior 

 postacetabular sacral ribs : but it is narrower, with the 

 hinder sacrals keeled inferiorly. These features at once 

 distinguish the pelvis from that of Anomaloptenix parva 

 (fig. 63). A difference is also noticeable in the form 

 of the ischium and pubis, and especially in the presence 

 of a distinct pectineal process to the latter in Megalapteryx. 

 The femur and tibio-tarsus are much longer and more 

 slender than those of Anomalopterijx parva; both ex- 

 mities of the latter bone being much less expanded. 

 The largest of the cervical vertebrte — apparently the seven- 

 teenth — differs from the corresponding vertebra oi A. piarva 

 by the absence of any trace of a neural spine between the 

 lateral ridges of the post/.ygapophyses. Purchased, 1882. 



38623. A left femur, with the extremities somewhat imperfect, 

 resembling the corresponding bone of the previous speci- 

 mens ; from the South Island. 



Presented hi/ ,SVr Daniel Cooper, Bart., 1864. 



