Two echidna setosa (a toothless burrowing mammal) sitting on a meadow near the water. Coloured etching by W. H. Lizars after C.H. Smith.

Echidna setosa: a genus of the Australian monotremate mamals, resembling hedgehogs in size and appearance (family of Echidnidae). "Plate XXX. Echidna setosa. One nearly allied to Echidna hystrix, but with the snout still more slender, the spines fewer and hid within the fur; we believe, always destitute of spurs on the hind feet. Ornithorynchus forms the only other genus of this order."--Smith. loc. cit.