26 Transactions. 
No. 12. Dinornis elephantopus, Owen. 
Of this remarkable species, bones of at least nine, more or less complete, 
individuals were excavated, of which four were of the same size as those 
figured by Professor Owen, while the five others decrease gradually to the 
size of No. 13, without my being able to find any line of demarcation 
between them. Of one of these large specimens which were found together 
in their natural position, I give here the measurements: they agian at 
the same time, the character of the three large specimens excavated. 
Of the Glenmark bones, the metatarsus is generally larger than Pro- 
fessor Owen’s, according to his measurements: the tibia, between the two 
measurements he gives; the femur is also slightly smaller than the one 
Professor Owen figures : 
Length of Girth of Girth of shaft, Girth of 
bone. proximal end. thinnest part. distal end. 
Tarsus metatarsus 9'8 in. 12°3 in. 6:8 in. 152 in. 
Dahan S238, 187 , 63 , 145 , 
Femur ... Sd Sg: S 155 ,, TL 17:4 
” 
When examining the back of the metatarsal bones of these and of the 
following Nos. 13, 14, 15, and 16, which form, probably, one distinct genus 
of the Dinornithes, I observed in most of them distinct and sometimes 
rough grooves, which appeared to have been caused by the attachment of 
the rudimental metatarsus of the back toe. At the same time, the numerous 
back metatarsal trachleas, back phalanges, and spurs of different sizes, sug- 
gested the probability that they belonged to those remarkable birds, which 
in every respect are quite distinct from the species of which I gave, before, 
the measurements, as well as from the larger forms of Dinornis giganteus 
and robustus, about which I shall speak in the sequel. As I have sent a com- 
plete set of these back metatarsal bones to Professor Owen for examination, 
I have no doubt that the conclusion I arrived at will be fully verified, and 
that thus another subdivision has to be made, to which all the elephantopus 
and crassus species may belong. Moreover, the'form of the skulls of these 
remarkable species, having all the same characteristic features, differs so much 
from those of the other Dinornithes that it offers us confirmatory evidence 
of their being quite a iacu genus. 
No. 18. Din. (elephantopus ?) —Smaller size. 
We obtained the leg bones of seven specimens, which agree in size and 
form in every respect. They are the smallest size of the elephantopus species, 
inthe gradation downwards. There is then a distinet break between this 
No. 13 and the next size, No. 16, Din. (crassus ?). 
 Theeight leg bones forwarded to London are those which articulated 
