Waitb. — Plexi of Necturus. 



PLATE 1. 



Fig. 1. Diagram showing topography of brachial plexus of left side. 



Fig. 2. Diagram of lumbo-sacral plexus of left side, as found in a type, group A. 



Fig. 3. Diagram of lumbo-sacral plexus of left side, as found in 3 type, group A. 



Fig. 4. Diagram of lumbo-sacral plexus of left side as found in group B. 



