156 ALLEN 
or... Suprarenal vein. 
St. Stomach. 
Ster.hy.M. Sternohyoideus muscle. 
Ster:A. Sternohyoideus arteries. 
Ster.V. Sternohyoideus veins. 
Sub.A. Subclavian artery. 
Sub.s. Subclavian sinus. 
Sub. V.q. Internal subclavian vein. 
Sub. V.(2). External subclavian vein. 
Sub. V.(3). Minor external subclavian vein. In Ofphtodon. 
Sup.O.A. Superior oblique muscle artery. 
Sup.O.M. Superior oblique muscle. 
Sup.O.V. Superior oblique muscle vein. 
Sup.R.A. Superior rectus muscle artery. 
Sup.R.M. Superior rectus muscle. 
Sup.R.V. Superior rectus muscle vein. 
aes. Testes. 
Thym. Thymus gland. 
Thyr. Thyroid gland. 
Thyr.A. Thyroid artery. 
Trap.M. Trapezius muscle. 
Tub. Tuber (cinereum). 
AV Transversus ventralis muscle. 
Ur. Ureters. 
Ur.B1.A. Urinary bladder artery. (Ur.B.A., in Ophzodon.) 
Ur.Bl. Urinary bladder. 
Ur. BL.) Urinary bladder vein. (Ur.B.V., in Ophcodon.) 
Ur.S. Urostyle. 
Ut. Utriculus. 
V.Ao. - Ventral aorta. 
Vas.L. ,  Wascular layer of the choroid coat. 
V.Chor.V. Ventral choroid vein. 
Ven. Ventricle. 
Ven.A. Ventral artery. 
Ven.A.). Posterior ventral artery. In Anoplopoma. 
Wena). Ventral or pelvic fins. 
Ver. Vertebra. 
V.Gas.A. Ventral gastric arteries. 
WiaGasavic Ventral gastric veins. 
V.Intc.A. Ventral intercostal arteries. 
V.Intc.V. Ventral intercostal veins. 
V.Lat.A. Ventral lateral arteries. 
V.Lat.V. Ventral lateral veins. 
Wielaevis Ventral lymphatic vessel. 
V.Myo. Ventral myotomes. 
Vo. Vomer. 
V.P.Ad.M. Ventral or pelvic profundus adductor muscle.” Adductor pro- 
fundus pelvis of McMurrich. 
V.Ret.M. Venous retia mirabilia of the choroid. 
