20 



5403-5431. Pisces [excl. of Leptocardii (or Amphioxus), 



for which see 5003-5031]. 



5403 Pisces. Comprehensive and General Works. 



5407 Pisces. Structure. 



[For sub-divisions, see 0207.] 



5411 Pisces. Physiology. 



[For sub-divisions, ses 0211.] 



5415 Pisces. Development. 



[For sub-divisions, see 0215.] 



5419 Pisces. Ethology. 



[For sub-divisions, see 0219.] 



5423 Pisces. Variation and Etiology. 



[For sub-divisions, see 0223.] 



5427 Pisces. Geography. 



[For sub -divisions, see J, 1 and 2.] 



5431 Pisces. Taxonomy and Systematic. 



The divisions are C3'clostomi, Ostracodermi, Plagio- 

 stomi, Holocephali, Arthrodira, Dipnoi, Teleostomi 

 (or Teleostei and Ganoidei, with the exception of 

 Arthrodira and Ostracodermi). 



The family should be mentioned. 



5603-5631. Batrachia and Reptilia. 



5603 Batrachia and Reptilia. Comprehensive and 

 General Works relating to one or both Classes 



5607 Batrachia and Reptilia. Structure. 



[For sub-divisions, see 0207.] 



5611 Batrachia and Reptilia. Physiology. 



[For sub-divisions, see 0211.] 



5615 Batrachia and Reptilia. Development. 



[For sub-divisions, see 0215.] 



5619 Batrachia and Reptilia. Ethology. 



[For sub-divisions, see 0219.] 



5623 Batrachia and Reptilia. Variation and Etiology. 



[For sub-divisions, see 0223.] 



5627 Batrachia and Reptilia. Geography. 



[For sub-divisions, see J, 1 and 2.] 



