Sturdee
ADM. SIR (FREDERICK CHARLES) Doveton, 1st bt. cr. 1916, of the Falkland Isles; K. C. B., entered navy in 1871; captain, 1899; rear-admiral, 1908. Chief of the Staff, Mediter- ADMIRAL STURDEE ranean Fleet, 1905. Commander-in- Chief, H. M. S. "Invincible" in action off the Falkland Isles, 1914, when the British Fleet destroyed the German Raiding Squadron.
STURGEON STURGEON (Acipenser), a genus of ganoid fishes of the family Acipenseridæ, order Chondrostei. The Chondrostei are ganoids without ganoid scales, the skin being either naked or with bony plates, as in the sturgeon. The skull is cartilaginous, but covered externally with bony plates belonging to the skin. The tail is asymmetrical or heterocercal, and the gelatinous notochord persists in the center of the vertebral column throughout life. Spiracles like those of sharks and skates are present in some genera.
The distinguishing features of acipenser are these: the body is long and narrow, and the skin is provided with five longitudinal rows of bony shields, each bearing a projecting keel. One row of these bony plates is along each side of the body, one along the back, and one on each side of the ventral surface. The skin between these rows of plates is naked, but contains minute scales which give it a rough surface. The head pro- A STURM there is no copulation, the ova being laid and fertilized on the bottom of the upper parts of rivers, like those of the salmon. The food of sturgeons consists of worms, crustacea, and mollusks, which they seek by by routing in the sea bottom with their snouts.