Proceedings of the Zoological Society of London. 151 
Conch. Icon. Cardium, pi. 5. 24. 
Hab. Port Lincoln, South Australia; Harvey. 
This shell may be chiefly distinguished from the Cardium Dona- 
ciforme, to which it is in many respects allied, by the contracted 
flexuous prolongation of the posterior portion, and by the pecu¬ 
liarity of one-half of the shell being conspicuously grooved, whilst 
the other half is smooth and shining. 
Mitua tumida. Mitr. testd abbreviato-fusiformi, spird brevi, 
apice acuto; anfractibus tumidis, superne piano-angulatis, 
longitudinaliter rudti costatis, costis ad angulum noduloso- 
tumidis; albida aut virescente, anfractibus ad angulum rufo 
tinctis, ultimo balteo nigro latiusculo cingulato; columella 
tri- aut quadriplicatd; aperturcc fauce nigricante-fused. 
Conch. Icon., Mitra, pi. 8. f. 51. 
Hab. New Holland. 
A few specimens of this peculiarly swollen shell were lately 
brought from New Holland in H.M.S. Beagle. 
January 14, 1845. 
Mr. Gould exhibited to the meeting a small species of Mam¬ 
mal, which he characterised as 
Dmmicia concinna. Drom. maculd nigrd ante oculos ; 
corpore superni el parte exteriore crurum pallide brunneis; 
crurum parte interiore et corpore subliis distinct£ albis. 
Before the eye a mark of black; all the upper surface, the 
outer side of the limbs and the tail, pale sandy brown; all the 
under surface and the inner side of the limbs white; the two 
colours distinctly separated, or not blending into each other. 
Length of the head and body, 3$ inches ; of the tail, 3J ; of 
the ear, £. 
Hab. Western Australia. 
Very nearly allied to the Dromicia of Van Diemen’s Land, but 
distinguished from that animal by its much smaller size, by the 
