THE FROG. 



9 



k. Kidney. 



lg'. Right lung. 



Iff. Left lung. 



/.A'. Anterior lymph-heart. 



l.h". Posterior lymph-heart. 



l.tr. Laryngo-tracheal cartilage. 



In'. Right lobe of liver. 



to". Left lobe of liver. 



l.v. Larynx. 



lij. Circumccsophageal lymph-sinus. 



m.o. Mesorchium. 



in.ov. Mesoarium. 



ms. Mesentery. 



mx.t. Maxillary teeth. 



od. Oviduct. 



od'. Its uterine portion. 



od". Aperture of oviduct. 



. (Esophagus. 



or. Left ovary. 



p. Pancreas. 



p.cu. Pulmo-cutaneous trunk. 



p.cu'. Point of origin of the same. 



pf. Pyriformis muscle. 



pr. So-called vesiculffi-seminales. 



jir'. Ducts of the same. 



pr.c. Vena cava superior. 



pt.c. Vena cava inferior. 



p.v. Pulmonary vein. 



p.v'. Aperture of entry of the same. 



py. Pylangium. 



pyl. Pylorus. 



r. Rectum. 



sp. Spleen. 



st. Stomach. 



s.v. Sinus venosus. 



si/. Synangium. 



t. Tongue. 



tr. Truncns arteriosus. 



ts. Testis. 



u.bl. So-called urinary bladder. 



wr. Ureter ? . Genito-urinary duct $ . 



Mr'. Orifice of the same. 



v. Ventricle. 



t/. Cut edge of ventricle. 



va'. Auriculo-ventricular valve. 



va". Sinu-auricular valve. 



va.I. Longitudinal valve (septum) of pylangium. 



va.s. Semi-lunar valves. 



v.cd. Vocal cord. 



v.ef. Efferent ducts of testis. 



v.s. Vocal sac. 



v.s 1 . Aperture of the left vocal sac. 



v.t. Vomerine teeth. 



2 



