4UG 



Pl. XXI. Profile view of the cranium magnified. 



2. Posterior view of the cranium magnified, 



3. Anterior do. do. do. 



4. Several views of a tooth magnified. 



5. The organ of hearing magnified. 



C. Anterior and inferior view of the end of 

 the snout magnified. 



7. Relative position of the teeth. 



8. Lower jaw, natural size. 

 Pl. XXII. Amphiuma means. 



Pl. XXIII. Musci and Hepaticee. 



1. Calymperes Hobsoni. 



2. Bryum ciliare. 



3. Hypnum Haldanianum. 



4. Jungermannia carinata. 

 5- Jungermannia tpnax. 



Pl. XXIV. Carices of North America. 

 Fig. 1. C. cristata. 



2. C. arida. 

 Pl. XXV. Fig. 1. C. cherokeensis. 



2. C. aurea. 

 Pl. XXVI. Fig. 1. C. subulata. 



2. C. scabrata. 

 Pl. XXVII. Fig. 1. C. digitalis. 



2. C. squarrosa. 

 Pl. XXVIII. Fig. 1. C. floridana. 



2. C. retrorsa. 

 Pl. XXIX. Eurypterus remipes. 



