Prof. H. G. Seeley on Euskelesaurus Brownii. 321 



different proportions, belong to different species or genera, it 

 is evident that in general massiveness this South- African 

 fossil departs perceptibly from those English types, and rather 

 approximates towards the shorter headed Teratosaurus, which 

 is provisionally identified with Zanclodon from the Trias, and 

 the American Ceratosaurus, which is said to be from Jurassic 

 rocks. In proportion of jaw the form is intermediate between 

 Ceratosaurus, Megalosaurus, and Zanclodon ; but the teeth in 

 the relative width and flatness recall Zanclodon rather than 

 other types. 



The only other fragment known to me which may possibly 

 be referable to this type is a specimen in the Museum of the 

 Jardin des Plantes, recorded in my notebook as " small 

 fragment of a jaw, much broken and not deep, with large 

 teeth in sockets. The teeth are compressed, of an oval form 

 in section, with a large pulp-cavity, which is closed at the 

 base." 



Left Pubis. (Fig. 2.) 



M. Paul Fischer gave an excellent discussion of the pubis 

 of Euskelesaurus. There can remain no uncertainty as to its 

 osteological determination after comparison with the pubis in 

 Belodon, Staganolepis, Zanclodon } and Massospondi/lus, in 

 which genera all the pelvic bones are known. They have 

 the pubis more or less distinctly modified from the same plan. 

 M. Fischer's figure (Nouv. Arch. Mus., Me*m. t. vi. pi. xi. 

 fig. 15) is reversed, and represents the external aspect of the 

 left pubis. The bone is rather more than 24 inches long, 

 thin and flat, with the anterior margin approximately straight, 

 but concave in its proximal half and slightly convex in its 

 distal half. The distal end, as preserved, is fully 8 inches 

 wide. The posterior border is less perfectly preserved. The 

 width of the bone steadily diminishes proximally till, at the 

 obturator notch, the width is 'd\ inches. Above that notch 

 the bone expands transversely in a hook-like form, to make 

 the superior articulation with the ilium, which is transverse 

 to the shaft, and the ischiac articulation at right angles to it. 

 The transverse width here is 7 inches. The thickness of the 

 bone at the acetabular and iliac surfaces is 3 inches. In the 

 upper fourth of its length the pubis is twisted, so that the 

 proximal surface makes an angle of about 45° with the flat 

 plate of the distal end. From this twist the inference may 

 be drawn that the ischium and pubis receded inward below 

 the acetabular part of the ilium. The anterior half of the 

 proximal surface has the aspect of having articulated with 



