Collected Papers Volume 2 (Paperback)

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: Peramys and Macropus. That this is not an ideal method of comparative work can be apparent to no one more fully than the author; but, it is the best that circumstances permit and if small errors have crept in it is hoped that they will not seriously affect general conclusions. The nomenclature adopted has been that of Bronn's Thier- reich with occasional changes where it seemed feasible to conform to the BNA terms. Features in the myology of Canolestes which seem especially noteworthy are as follows: Trapezius divided into spinotrapezius and acromiotrapezius. Rhomboideus divided. Dorso-cuticularis present. Distinct rectus capitis posterior superficialis. Pterygoideus externus relatively large and bicipital. Subclavius not extending to scapular spine. Median head of triceps brachii distinct. Origin of supinator brevis including a sesamoid. Pronator quadratus absent. Distinct caudo-femoralis present. Femoro-coccygeus practically distinct from gluteus maximus. Glutens medius partially divided into two layers. Sartorius on inner side of thigh, much reduced, and originating from Poupart's ligament. Extensor carpi ulnaris with ulnar as well as humeral origin. Radial extensors of carpus separate from each other. Median and lateral heads of gastrocnemius partly united. Fibular divisions of extensor brevis digitorum distinct from each other. Pedal extensor hallucis brevis well-developed. Flexor accessories present. Pronator tibiae partly separate from popliteus. Short flexors of second and third toes arising from a sesamoid. URINOGENITAL SYSTEM. The interesting urinogenital system has been studied only by gross dissection and the use of the binocular microscope. With the scanty material available and the means at hand,...