[_To face page 45.] 



Animal. Soft, without either head or 

 eyes, and having the mouth con- 

 cealed. A large mantle envelopes 

 the whole of the body, which is en- 

 tirely or partially covered by a 

 bivalve shell. 





1. BRACHIOPODA. 







Animal, depressed, circular, or 

 oval. 



Shell having no ligament to 

 unite the valves, but a pedicle 

 by which the shell is united 

 to other substances. 



Animal 

 sides 

 Shell ha 



lell 



lar 



ve," 



Two Families. 



1. Tendinosa. {Shell attached 



by a pedicle.) Lingula, 

 Terebratula. 



2. Adhzerentia. (^//attach- 



ed by one valve, as well 

 as a pedicle.) Theci- 

 dium ) Crania^ Orbicula. 



1. Tu 



pa 

 sa 



2. Phc 



th 



3. Sol 



So 



4. My 



m 

 P 



5. Ma 



ri 



6. Lit 



Si 



7. Ny 



li| 

 m 



8. CoJ 



Ou 



q 



9. Ca] 



ra 

 Ik 



10. ArI 



aJ 



11. Nai 



ax 



ai i 



12. Ch 



fl 



ent 

 ed. 



icll 

 ve, 

 or 

 ri- 



m- 

 ve, 

 la- 

 ho- 

 na. 

 ia~ 

 es- 

 re- 

 al~ 

 la. 



°7lt 



ier 



of 

 fe- 

 nd 

 J e- 

 °n, 

 s. 

 tiy 

 ve, 



3.) 



'a- 







