366 J. W. HI7LKE ON A MODIFIED DINOSAURIAN ILITW. 



does also in respect of its broad ventral extension and probable 

 median symphysis (compare figs. 1 & 3) ; whilst its long slender 

 branch repeats the avian resemblance noticed by Prof. Huxley in 

 Hypsilophodon (figs. 1 & 2). 



My warmest thanks are due to the Rev. W. Fox for allowing me 

 to study these very instructive fossils. 



Discussion. 



Prof. Seeley said he thought this paper was one of the most 

 important contributions to the osteology of the Dinosauria that had 

 been laid before the Geological Society within his memory. He 

 entirely agreed with the interpretation which JVIr. Hulke had given 

 of the bones. He said that in the A-pteryx the praepubic process of 

 the pubis is more developed than in any other known bird, while 

 the whole pelvis in other respects approximates closely to that of 

 Iguanodon. It was of great interest to find the fossil showing that 

 this process attained at least as great a development as in the Chelonia 

 and Lacertilia, because it showed that the pelvis of Dinosaurs was 

 not entirely Avian, but, like the remainder of the skeleton, showed 

 a blending of Avian and Reptilian peculiarities. 



