45 MR. C. H. O'DONOGHUE ON THE 
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NGO: 
EXPLANATION OF THE PLATES. 
Lettering. 
A.C. Anterior Cerebral Vein. L.M. Lateral Myelonal Vein. 
A.Ca. Anterior Cardinal Sinus. M. Myelonal Vein. 
A.Ch. Anterior Choroid Plexus. M.G. Median Gastric Vein. 
A.Co. Anterior Coronary Vein. N.S. Nasal Sinus. 
A.F. Anterior Factor of A.C. O. Opening of the Ductus Cuvieri. 
A.J. Anterior Intestinal Vein. O.C. Olfactory Capsule. 
A.L.G. Anterior Lieno-gastric Vein. O.N. Orbito-Nasal Vein. 
An. Anastomosis between Posterior Or. Orbital Sinus. 
factors of A.C. P.An. Pelvic Anastomosis between 
Au. Auricle. the two L.A. 
B. Brachial Vein. P.C. Posterior Cerebral Vein. 
Ba. Basipterygium. P.Ca. Posterior Cardinal Sinus. 
C. Caudal Vein. P.Ch. Posterior Choroid Plexus. 
Cl. Cloacal Vein. Pe. Pectoral Fin. 
Co. Conus Arteriosus. P.I. Posterior Intestinal Vein. 
D.A.G. Dorsal Anterior Gastric Vein. Pl. Pelvic Fin. 
D.C. Ductus Cuvieri. | P1.C. Pelvic Cartilage. 
D.G. Dorsal Gastric Vein. | P.2.G. Posterior Lieno-gastric Vein. 
D.O. Dorsal (sophageal Vein. P.O. Post-Orbital Sinus. 
HK. Eye. P.S. Posterior Splenic Vein. 
¥. Femoral Vein. R. Portion of the PJ. on the 
G.I. Gastro-Intestinal Vein. Rectal Gland. 
G.S.2. 2nd Gill-cleft. Re. Rectal Vein. 
H. Hyoidean Sinus. R.P. Renal Portal Vein. 
H.P. Hepatic Portal Vein. R.S. Right Spermatic Vein. 
H.S. Hepatic Sinus. | S.C. Sub-Clavian Vein. 
1.1. Intra-Intestinal Vein. | Sp. Spiracle. 
L.J. Inferior Jugular Sinus. S.S. Sub-Scapular Sinus. 
J]. Ihac Vein. | S.V. Sinus Venosus. 
I.M. Intestino-Mesenteric Vein. T.G. Thyroid Gland. 
1.0. Inter-Orbital Vein. | V. Ventricle. 
KX. Caudal Mesonephros. | Va. Valve between A.Ca. and P.Ca. 
L.A. Lateral Abdominal Vein. | V.A.G. Ventral Anterior Gastric Vein. 
L.C. Lateral Cutaneous Vein. | V.F. Ventral factor of A.C. 
Le. Lateral expansion of the Pos- | V.G. Ventral Gastric Vein. 
terior Choroid Plexus. | V.O. Ventral @sophageal Vein. 
