The author stated that a species of sturgeon, for which he has proposed the name of Acipenser latirostris, as characteristic of the species, is occasionally met with in the Frith of Forth, in the Solway Frith and in the Tay. It is called by the fishermen the Broad-nosed Sturgeon, to distinguish it from the Acipenser sturio, or sharp-nosed species. The length, in general, seven feet; weight, about eight stone. The colour of the head, back, and sides, is of an olive-grey; the belly dirty white. The body is armed with five rows of osseous shields, extending from the head to the tail. The first row runs down the central ridge of the back. The two next rows arise one on each side of the former, and immediately on the lower margin of the pectorals the other two rows commence. The dorsal shields are but very slightly carinated, the fifth being the highest in the series.