Transactions and proceedings and report of the Philosophical Society of Adelaide, South Australia . mmmm MJSSET 4 6 LL NftH AM LIMITED, PHNTERS & PUBLISHEfiS AOE IAIDE, 80. AU». ins. and Proc. Roy. Soc. S. Austr. Vol. XLIV., Plate XV 373 4 are well developed and normal. It is to be noted thatsyndactylism does not destroy the primitive mammalian dis-tribution of the interdigital pads. The hypothenar padbecomes flattened in older examples. External Genitalia.—The genital tubercle of the male isat first freely exposed beyond the limits of the cloaca (seefig. 13). In later stages the tubercle beco
Transactions and proceedings and report of the Philosophical Society of Adelaide, South Australia . mmmm MJSSET 4 6 LL NftH AM LIMITED, PHNTERS & PUBLISHEfiS AOE IAIDE, 80. AU». ins. and Proc. Roy. Soc. S. Austr. Vol. XLIV., Plate XV 373 4 are well developed and normal. It is to be noted thatsyndactylism does not destroy the primitive mammalian dis-tribution of the interdigital pads. The hypothenar padbecomes flattened in older examples. External Genitalia.—The genital tubercle of the male isat first freely exposed beyond the limits of the cloaca (seefig. 13). In later stages the tubercle becomes hidden fromthe surface by its own retraction within the cloaca and by theupgrowth of the cloacal margins (see fig. 14). Two mammary areas disposed bilaterally exist within thepouch of the female (see fig. 15).. Fig. 15. The pouch and mammary glands of the female at the 100 mm. stage(from Specimen female B, Perth Museum). DESCRIPTION OF XIV. Pouch young of Trichosurus vulpecula, var. typicus,photographed against a background of l/12-inch , Specimen male A, Perth Museum. B, Specimen male C, Piper. Plate XV. Pouch young of Trichosurus vulpecula, var. typicus,photographed against a background of l/12-inch squares. C, Specimen female B, Perth Museum. D. Specimen male D, Perth Museum. 374 Additions to the Flora of South 18. By J. M. Black. [Read October 14, 1920.] Plates XXII. and XXIII. The districts mentioned refer to those in Tates Floraof Extra-tropical South Australia. Gramineae. Leptochloa subdigitata, (R. Br.) Trin. Hookey Water-hole, near Oodnadatta (H. W. Andrew). The stout, rigid,glaucous stems and the straw-coloured leafsheaths resemblethose of the two cane-grasses of the North—Spinifexparadoxus and Glyceria ramigera. Aristida calycina, R. Br. Oodna
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