OCR Text |
Show 324 PROF. R. COLLETT ON MAMMALS [Mar. 16, skin of a nearly adult male (from Glencoe) was destroyed, skull only preserved. The coloration of the young and the female agree in most details with Thomas's description. The fingers and toes are, however, yellowish white to the claws, and the tail, too, is rufous white throughout, not becoming darker towards the tip. Skull. In the male the length is 174 mm., the breadth 103 mm. The greatest breadth across the inflated nasal chamber is 49 mm. The specimen is not perfectly adult; the line between the zygomatic processes will touch the anterior part of TO4. The skull of the young female has a length of 147 mm., breadth 87 mm. MALE.-Teeth. Persistent set not yet developed, the milk p4 being still present. It is short, with a weak root; its length scarcely exceeding the breadth of TO1. In the lower jaw TO1 is almost aborted on both sides, its premolar-like crown being pressed obliquely in the space between (the normal) TO2 and the milk pl. FEMALE.-Teeth as in the male, but TO1 in lower jaw is normal. The milk p* in both jaws very small and directed obliquely forwards. Hab. Common in Arnhem Land in the neighbourhood of hills, generally seen in herds. Also found on Victoria River. It was very wary and difficult to approach. Native name: Koppo (male); Kondaltburu (female). 16. MACROPUS AGILIS (Gould), 1841. Macropus agilis, Thos. Cat. Mars. Monotr. Brit. Mus. p. 42 (1888); Ogilby. Cat, Austral. Mamm. p. 54 (1892). N. Australia : Port Darwin, June 1894 (four specimens). Daly River, July-Aug. 1894 (four specimens and one embryo). Victoria River, April 1895 (one specimen). Katherine River, July 1895 (three specimens). N.W. Australia: Roebuck Bay, Nov. 1895 (five specimens and three embryos). Skin. There are in the collection 17 skins (mostly with skulls), four embryos or young ones from pouch, and several skulls extra. Young from pouch. Length from snout to anus about 150 mm., tail 97 mm. Eyes still closed. Naked ; hairs on snout just traceable. No teeth visible. (Roebuck Bay, Nov. 1895.) Another young one, length from snout to anus about 200 mm., tail 148 mm. (size of a squirrel). Still almost perfectly naked, the eyelids and vibrissae developed. Lower incisors visible. (Roebuck Bay, Nov. 1895.) Skull. 20 skulls, in different stages of development, are in the collection (length between 68 mm. and 152 mm.). Teeth. I give some remarks on the teeth in a few of these stages. Young stage (a specimen from the pouch). Length of the skull |