Page 59. 
276 ON HALMATURUS LUCTUOSUS. 
Subfamily HypsipryMNIN&. Macropodide in which the ceso- 
phagus enters the stomach near the pyloric end; with no 
special Spigelian lobe to the liver; with lateral longitudinal 
bands to the short colic cecum; with a much-flattened and 
expanded radius, with a characteristie 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. 
Genus Bettongia (including all the others of the group except 
B. rufescens). Auditory bulla much inflated; palatine 
foramina as in Hypsiprymwus; ridges on premolars numerous 
and oblique; head short. 
Genus MWpyprymnus* (including only Bettongia rufescens of 
Gould). Auditory bulla net inflated; palatine foramina 
absent; head short; tarsus considerably longer than in 
the two other genera. 
It should be mentioned that the viseeral anatomy of Apyprymnus 
rufescens has not been published, and that Mr. Waterhouse divides the 
genus Hypsiprymnus into three subgenera corresponding exactly with 
the three genera here defined. 
My best thanks are due both to Mr. Sclater and Dr. Giinther for 
the very kind way in which both these gentlemen have assisted me in 
my study of this subject. 
EXPLANATION OF THE PLATES. 
Prats 8. (VII) 
Lateral superior and inferior views of the skull of Dorcopsis luctuosa, natural size. 
Prate 9. (VIII.) 
View of the inferior surface of the neck of Dorcopsis luctuosa, showing the median 
gland with four orifices situated in the hyoid region. The positions of the 
large parotid and small submaxillary glands are indicated by dotted lines. 
PuatEe 10. (TX.) 
Teeth, twice the natural size, of (figs. 1-5) Dorcopsis luctuosa, (figs. 6-10) Dorcopsis 
miilleri, and (figs. 11-15) Macropus brunii. The upper two rows represent the 
left upper premolar, the third and fourth rows the upper and lower third left 
molar, and the bottom row the incisors. 
* This term I propose for Mr. Waterhouse’s first section of Hypsiprymnus, 
which he has ieft without any Latin name. 
