Probably detached from one of four issues of Whiggeries and waggeries, London : William Strange, 1834. This publication reprinted wood engravings by Robert Seymour, Robert Cruikshank, and others which had previously appeared-- often with different captions-- in Figaro in London, also published by Strange. The identical image appeared in Figaro in London, no. 16, 1832, with the title An Irish political kangaroo.
A kangaroo with Lord Plunket's head shelters its young (his sons), who have human heads, in a pouch formed of the Purse of the Great Seal. It holds out a protecting paw towards another, who races in terror towards the pouch, while in his other paw he holds his tail which terminates in the Mace, and forms a weapon of offence.