. The museum of natural history, with introductory essay on the natural history of the primeval world : being a popular account of the structure, habits, and classification of the various departments of the animal kingdom, quadrupeds, birds, reptiles, fishes, shells, and insects, including the insects destructive to agriculture . ucks beak; but on closer 2 E •218 exaraiuation, several o\iparine features will be imme-diately discovered. M. Geoftroy St. Hilaire first gavethe name of Monotremata to the small group of non-placental marsupial mammals
. The museum of natural history, with introductory essay on the natural history of the primeval world : being a popular account of the structure, habits, and classification of the various departments of the animal kingdom, quadrupeds, birds, reptiles, fishes, shells, and insects, including the insects destructive to agriculture . ucks beak; but on closer 2 E •218 exaraiuation, several o\iparine features will be imme-diately discovered. M. Geoftroy St. Hilaire first gavethe name of Monotremata to the small group of non-placental marsupial mammals here associated together,thereby indicating the termination of the uriuo-genitaland intestinal passages by a single cloacal outlet—anarrangement also found in birds and reptiles. Equallystriking peculiarities affect the skeleton, these beingmore especially manifest in the presence of two claviclesnearly conjoined, and applied against the upper surfaceof a single furcular bone; there are also well-developedcoracoid bones, which are articulated to the addition to this there are special osseous elements,termed ejiicoracoids, which are connected to the sternaland furcular bones, the scapula being likewise attachedto the breastbone. In the accompanying woodcut(fig. 93), the furcular bone or episternum presents a. sternal apiiarHtiis of the Diick-biU (Oniithxrli^iichLis parHdoxiisl. T-shaped outline, with the lateral free ends directedtowards the shoulder-blades. It conceals the clavicles,which are slender bones and not united at the mesialline. The epiooracoids are seen interposed on eitherside of the stem of tlie furcular bone, restuig laterallyon the thick coracoids, which latter arc articulated tothe episternum and manubrial bone of the sternumbelow and to the scapular above. Another circum-stance worthy of remark is that the bones of the skidlbecome very early consolidated; those of the facebeing much prolonged forwards and flattened out intothe form of a beak, wh
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