BLOOD-VASCULAR SYSTEM OF THE LORICATI I49 



XIII. REFERENCE LETTERS AND ABBREVIATIONS USED IN THE 



FIGURES. 



The letter D or V prefixed to an abbreviation indicates dorsal or ventral ; R 

 or L, right or left ; A or P, anterior or posterior ; Ex or In, external or internal. 

 A series of similar named vessels is numbered from cephalad to caudad. 



A. A. Anterior ampulla. 



A.Aud.A. Anterior auditory artery. 



a to e. Terminal branches or radicals of the left portal. 



A.Bl. Air-bladder. 



A.Bl.A. Anterior air-bladder or retia mirabilia artery. 



A.Bl.V. Anterior air-bladder or retia mirabilia vein. 



A. Br. A. Afferent branchial arteries. 



Ab.V.S. Abductor muscle of ventral spine. 



A.Cer.A. Anterior cerebral artery. 



A.Cer.V. Anterior cerebral vein. 



Ad.Hym.' Adductor hyomandibularis. 



Ad.M.M. Adductor mandibulse muscles. 



Ad. Pal. A. Adductor palatine arch. M. adductor arcus palatini. 



A.Fil.A. Afferent filament arteries. 



A.G.Bl.A. Anterior gall-bladder artery. 



A.G.Bl.V. Anterior gall-bladder vein. 



A. Int. A. Anterior intestinal artery. 



A.Int.V. Anterior intestinal vein. 



A.Ps.Fil.A. Afferent pseudobranchial filament artery. 



A.R. Anal fin rays. 



A.Ren.V. Afferent or advehent renal veins. 



A.Ret.M. Arterial retia mirabilia of choroid gland. 



Aud.A. Auditory artery. 



Aud.C. Auditory capsule. 



Aud.V. Auditory vein. 



Aur. Auricle. 



B.Art. Bulbus arteriosus. 



Br. A. Branchial arches. 



Br.M.A. Dorsal branchial muscle arteries. 



Br.O.A. Branchiostegal arteries. 



Br.R, Branchiostegal rays. 



Cae. Pyloric caeca. 



Csefi) to (5) Five pyloric caeca of Anoplofoma. 



Camp.H. Campanula Halleri. 



Cau.A. Caudal artery. 



Cau.V. Caudal vein. 



CCA. 1 



C''.C.A'. /- Cranial cavity arteries. 



Q".Q,".K". J 



C.Car.A. Common carotid artery. 



ccv. 

 c.c.v. 



Cen. Centrum 



> Cranial cavity veins. 



