The Book of the Fly / A nature study of the house-fly and its kin, the fly plague and a cure

by George Hurlstone Hardy

V, 5.—Fifth Vein.

V, 6.—The Anal Vein.

V, 7.—The Axillary Vein.

X, 1a.—The Humeral Cross-vein, connecting V, 1a to V, c.

X, 1b.—The Subcostal X-vein, connecting V, 1b to V, 1a.

X, 2.—Cross-vein connecting V, 2 to V, 1b.

X, 4.—Discal, Middle, or Central X-vein.

X, 5¹.—Lower Cross-vein, connecting V, 5¹ to V, 4.

X, 5².—Lower Marginal Cross-vein, connecting V, 5² to V, 4 (or to some branch of V, 4).

X, 6.—Anal Cross-vein.