SPECIMENS FROM LOWER LIAS AND LOWER OOLITE OF ENGLAND 451 



fore with the large spina iliaca anterior. The distal condyles of the 

 femnr are separated by a broad groove even on the dorsal side. The tibia 

 has a typical lateral crest near its proximal extremity. In the metatarsus 

 a fifth metatarsal is not known and probably did not exist, so the pes 

 stands between Teratosaurus and Antrodemus. 



Deslongchamp's Poikilopleuron hucMcmdi, from the Middle Dogger 

 of Normandy, is only a rather large Megalosaurus, probably of the same 

 group as M. hucklandi at Stonesfield. Since the specific name of these 

 certainly different species would now be the same, the latter might better 

 be called Megalosaurus poikilopleuron. The bone which I had mistaken 

 some time ago for a pubis is rather a scapula. As a pubis its dimensions 

 should be double. Therefore my former conclusions made from the form 

 of the "pubis" are invalid. Of considerable interest is the fore limb with 

 the manus. The humerus is very stout. Its length I should estimate, 

 from a special study, as about half of the length of the tibia. The fore- 

 arm is extraordinarily short and heavy. The radius shows a prominent 

 muscular process in the middle of its length. The manus has five fingers, 

 as in the Triassic Plateosauridae, and differs from the later Carnosauria. 

 The manus is relatively large. 



A very well known form from the Oxford clay is Megalosaurus 

 (Sfreptospondylus) cuvieri, found in England and in Normandy. The 

 best skeleton existing is that from Wolvercot in the Parker collection 

 (Oxford), which I have studied in detail from Nopsca's short descrip- 

 tions. The skull, much of which is rather complete, differs in some 

 minor points from that of Megalosaurus hucklandi, of which much less 

 is known. The importance of this specimen lies in the completeness of 

 the vertebral series (nine cervicals, fourteen dorsals, the first three 

 sacrals, and twenty-nine caudals). The cervical and anterior dorsal ver- 

 tebrae are deeply opisthocoelous, but this condition decreases j)osteriorly. 

 Especially well developed are the neatly circumscribed pleurocoelous 

 cavities, also decreasing toward the tail, but in the anterior dorsals they 

 are still quite distinct, although soon becoming flattened. The cervicals 

 are relatively short and high and the dorsals are relatively low. The 

 sacral vertebrae have saddle-shaped articular faces. The shoulder girdle 

 is similar to that of Megalosaurus hucklandi. The humerus is less 

 heavily built than in the latter form and has not half the length of the 

 femur, or even of the tibia. The manus is relatively slender, but is in- 

 completely known. In the pelvis the ilium is much like that of Megalo- 

 saurus hucklandi and the same is true of the pubis, which has the medial 

 lamella more developed in the proximal portion. The distal extremity 



