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Show 58 MR. A. H. GARROD ON HALMATURUS LUCTUOSUS. [Feb. 2, of the Macropodidae which have come before me in m y study of Dorcopsis luctuosa would lead me to divide up the family in the following manner:- Family M A C R O P O D I D A E . Diprotodont Marsupialia wanting the hallux, the second and third digits of the pes being much reduced and included in the skin as far as the ungual phalanges, which at the same time have the claws so formed that the inner is convex inwards and the outer convex outwards, at the same time that their contiguous surfaces are flattened. The stomach is elongated and sacculated. Subfamily M A C R O P O D I N ^ E . Macropodidae in which the oesophagus enters the stomach near the cardiac end ; with a Spigelian lobe to the liver ; with no lateral longitudinal bands to the colic caecum when it is short, and with radius of normal form. Section 1. M A C R O P U S . With the premolars never much larger than the first molar ; with a characteristic molar tooth-pattern; with the stomach but slightly lined with digestive epithelium (?) and with the hair on the nape of the neck directed backwards. Hab. Australia, Tasmania, Aru, and the K e Islands. Genera or subgenera. Macropus, Halmaturus, Petrogale, Lagorchestes. Section 2. DORCOPSIS. With the premolars strikingly large, with a characteristic molar-tooth-pattern, slightly modified upon that of Macropus ; with the stomach mostly lined with digestive epithelium, and with the hair of the nape of the neck directed forwards. Hab. New Guinea and Mysol. Genus 1. Dorcopsis. Limbs Macropine in their proportions. Genus 2. Dendrolagus, Protemnodon*, Sthenurus*. Fore limbs much longer than in Macropus. Subfamily H Y P S I P R Y M N I N ^ E . Macropodidae in which the oesophagus enters the stomach near the pyloric end ; with no special Spigelian lobe to the liver ; with lateral longitudinal bands to the short colic caecum; with a much-flattened and expanded radius, with a characteristic molar-tooth-pattern, and with the incisors worn down much as in Rodent animals. Hab. Australia and Tasmania. Genus Hypsiprymnus (including H. murinus, H. gilberti, and H. platyops). Auditory bulla somewhat inflated; palatine foramina, one large one on each side ; ridges on premolars few and perpendicular. Face elongate. * An inspection of the plates in Prof. Owen's paper on these new genera (Phil. Trans. 1873, p. 245), makes it evident that they are scarcely distinguishable from Dendrolagus, and must be included in the DORCOPSIS section of the family. |