90 Proceedings of the Royal Society of Victoria. 



Miniopterus.^ The glandular development is here {m.g.), as in 

 the Rabbit,- and, contrasted with Miniopterus^ and the Guinea-pig, 

 most marked in the cartilaginous capsule, at the upper and outer 

 part of the Organ, though unlike the Guinea-pig, where the glands 

 are more numerous when the cartilage is alisent, in Notoryctes 

 there seems to be no such invariable relation. There are also, 

 as described above, numerous glands lying in the inferior septal 

 ridge {i.s.r.) outside Jacobson's cartilage. In this respect, No- 

 toryctes agrees with Didelphys murina,* Trichosurus,* and Dasy- 

 urus maculatus,® while differing from the Phalangers generally, 

 and from Perameles' and Dasyurus viverrinus.* At the same time, 

 we find the general Diprotodont feature, characteristic also of 

 Phascolomys,' in which numerous gland ducts open into the 

 Organ from above. With regard to these glands around Jacob- 

 son's Organ, it may be remarked that they appear to be regarded 

 by Klein, as also those on the septum, as true serous glands in 

 the Rabbit^'^ and Dog;'^ while Broom finds, in the septum, mucous 

 glands in Miniopterus,^ and in various Marsupials also.^^ In 

 Notoryctes, those in the mucous membrane of the septum and 

 ridges covering the turbinal bones, appear to be true mucous 

 glands, though those around the Organ of Jacobson and a small 

 group on each side of the bottom of the nasal septum are appar- 

 ently serous in character, and have smaller alveoli, more deeply 

 staining nuclei, broader, deeply staining ducts, which all open into 

 Jacobson's Organ. The gland ducts chiefly enter the tube at the 

 upper and lower sulci, though occasionally they open through the 

 lateral wall itself as previously found in the Rabbit'" and Sheep. 

 Their number would account for the fact that the tube is always 



1 Proc. Linn Soc. N.S.W., vol. x., n.s., 1895, p. 574. 



2 Q.J.M.S., vol. xxi., pp. 563-4. 



3 Loc. cit., p. 103. 



4 Proc. Linn. Soc. N.S.W., vol. xi., n.s., 1836, p. 598. 



5 Loc. cit., p. 607. 



6 Loc. eit., p. 596. 



7 Loc. cit., p. 602. 



8 Loc. cit., p. 596. 



9 Loc. cit., p. 613. 



10 Q.J.M.S., vol. xxi., p. 564. 



11 Loc. cit., vol. xxii., p. .306. 



12 Loc. eit., vol. xi. n.s., 1896, p. 614; Trans. Roy. Soc. Edin., vol. xxxix., p. 233. 



