480 MALL. 



DESCRIPTION OF PLATE XXX. 



Fig. i. Reconstruction viewed from the left side. Enlarged 25 times. III., IV., 

 V., etc. cranial nerves; A. V. auditory vesicle; 1, 2, 3, and 4, branchial pockets; 

 T. thyroid gland; B. bronchus; L. liver; K. kidney; yellow, nerves; red, arteries; 

 blue, veins. The dotted lines mark the extremities. 



Fig. 2. The same as Fig. 1. Deeper view. H. hypophysis; M. mouth, mesen- 

 tery; I, 2, 3, 4, branchial pockets; i?. bronchus; P. pancreas; Z. liver; W. B. 

 Wolffian body; W. D. Wolffian duct; K. kidney; C. cloaca; O. openings by which 

 the pleuro-peritoneal cavities communicate; P. papilliform projection into the lower 

 opening. 



