. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Thecodontosaurus and Palteosaurus. 159 humerus. It has lost both proximal and distal ends, but has the radial crest preserved, showing- a type in which the proximal end of the bone was greatly expanded relatively to the distal end ; and this type conforms to the Saurischian plan. It is very well represented by the humerus 118, which is similarly imperfect distally and has lost the radial crest, but preserves the articular head. Tiie right humerus no. 37 also has the articular
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Thecodontosaurus and Palteosaurus. 159 humerus. It has lost both proximal and distal ends, but has the radial crest preserved, showing- a type in which the proximal end of the bone was greatly expanded relatively to the distal end ; and this type conforms to the Saurischian plan. It is very well represented by the humerus 118, which is similarly imperfect distally and has lost the radial crest, but preserves the articular head. Tiie right humerus no. 37 also has the articular head and radial crest imperfect, but preserves the distal end of the bone. These specimens appear to be referable to more than one species; but the plan of the bone is the same in them all, so that an idea of the form of the humerus in Palojosaurus may be gathered from Proximal articulation. Distal fracture. Inferior aspect of a ripht liumerus of PaJccosaurus, showing the proximal anicuhition ; imperfect distally. Brist, Mus. no. 118. 4 nat. size. The transverse width of no. 66 at the base of the radial crest is 3^ inches ; but since the head of the bone is broken away, the transverse measurement was probably not less than 4 inches. The shaft is | inch thick, and the compressed tuberosity of the radial crest is IfV inch long. The large radial crest extends for a considerable distance down the length of the shaft, and the length of the bone, of which indications are preserved, amounted to 7 inches, without evidence of the extremity of either proximal or distal end. No. 118 is a"smaller bone (fig. 8), with a transverse width of the shaft of about y'V inch, which is similar in sizeto no. 37. The complete proximal outline of the articular head is convex. The head is directed inward at an angle of 45° to the length of the shaft, and appears also to be twisted at an angle of 45° to. Please note that these images are extracted from scanned page images that may have been
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