CoLENSo. — On the Moa, '79 



first Continental naturalists, in reference to the existence of the Apteryx, 

 the Moa's probable congener : — " U Apteryx de M. Temminck ne serait-ilpas 

 fonde sur les pieces de Bronte (Dodo) conservees au Museum de Londres ?" 

 — Lesson, Manuel d'Ornith. ii., p. 211. I do so, however, on the spot, after 

 long investigation and careful consideration of the whole matter. 



Note E, page 75. 

 It may not be amiss to give here an outline of the genera composing 

 the Family of Strnthionidw, seeing they are but few. Each genus contains 

 but a single species. In the present state of our knowledge the group may 



be thus arranged : — 



Class AYES. 



Order IV. Easokes, Vigors. 

 Family 4. Struthionidce. 



1. Genus Struthio, Linn. (Type of the group.) Ostrich of South Africa: 



possessing two toes. 



2. Genus Casuarius, Brisson. Cassoicary of the Indian Archipelago : three 



toes. 



3. Genus Dromiceius, Vieillot. Emu of New South Wales : three toes. 



4. Genus Rhea, Vieill. Nandu of Straits of Magellan : three toes. 



5. Genus Didus, Linn. Dodo, formerly an inhabitant of the Isles of Mau- 



ritius and Boiu'bon : three toes : extinct. 



6. Genus Apteryx, Shaw. Kiwi of New Zealand : three toes and a rudi- 



mentary one. 



7. ? ? Moa of New Zealand : three toes : supposed to be 



extinct. 



EXPLANATION OF PLATES IV. and V. 

 Plate IV. 

 Fig. 1. Tihia of Moa, nearly perfect, 30 inches in length. 



a, a, girth 16J inches, bone at the end much broken and reduced in size. 

 h, b, girth, over processes, 12^ inches. 



c, c, girth, 5J inches ; smallest part. 



d, deep muscular impressions. 



e, e, girth, 9 inches. 



Note. — The largest Tibia yet found measured 4 inches longer than this. 

 Fig. 2. Femur of 3Ioa, nearly perfect, length 13 inches. 

 /, /, girth, 12J inches. 



g, g, reticulated muscular impressions, very numerous. 

 i, i, girth, 7| inches. 

 k, k, girth, smallest part, BJ inches, 

 m, m, girth, llj inches. 

 Obs. — I have seen a portion of a femur, the S7nall part of which measured 8 in. 



in girth ! The one from which the drawing was taken, though not so large, 



was more perfect. 



