Transactions and proceedings of the Royal Society of South Australia (Incorporated) . Fig. manus, 105 mm. stage. The anconeal and the medial brachial give rise to a siaglehair each (see fig. 4). Crural Vibriscae.—The crural papilla is well stout tactile hairs arise from it, one of these bristlesbeing, in all specimens, considerably longer than the other(see fig. 5). 127 The Rhinarimn.—Tbe rhinarium is roughly triangularin shape and distinctly grooved in the middle line-. Thesurface is finely granular. The narial slits are boundedabove entirely by naked skin, but their low
Transactions and proceedings of the Royal Society of South Australia (Incorporated) . Fig. manus, 105 mm. stage. The anconeal and the medial brachial give rise to a siaglehair each (see fig. 4). Crural Vibriscae.—The crural papilla is well stout tactile hairs arise from it, one of these bristlesbeing, in all specimens, considerably longer than the other(see fig. 5). 127 The Rhinarimn.—Tbe rhinarium is roughly triangularin shape and distinctly grooved in the middle line-. Thesurface is finely granular. The narial slits are boundedabove entirely by naked skin, but their lower margins are. Fig. pes, 35 mm. stage. pubescent behind. The infranarial portion of the rhinariumruns to the upper lip, forming a very definite portion of itsmedial area, (see fig. 6). The External Ear (see figs. 7 and 8).—In all stageswhich I have examined the auricle has been folded back-wards. This is true of the 35 mm. embryo. The wholeprocess of the development of the pinna may be describedas a progressive simplification. Two well processi antihelicisappear, but only one persists as a meatal operculum. Awell-marked bursa in the 80 mm. embryo becomes reducedto an insignificant depression in the 105 mm. stage. Of the Lm 128 tragus and antitragus, the tragus alone persists in any degreeof finished development. The Manus (see figs. 9 and 10).—The digital formula of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectscience, bookyear1912
