3823 Orthoptera, etc. Variation. 



[For sub-divisions, see 0223.] 



3827 Orthoptera, etc. Geography. 

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



3831 Orthoptera, etc. Taxonomy and Systematic. 



The slips under 3803-3831 must at least state to which 

 of the three groups (Orthoptera, Neuroptera, Tri- 

 choptera) each slip refers. 



Orthoptera consists of Forficulidfe (or Dei'maptera), 

 HemimeridEe, Blattidte, Mantidse, Phasmidee, 

 Gryllida3, LocustidBe, Acridiidte. 



Neuroptera includes Planipennia, Embiidi^, Termi- 

 tidge, Psocidai, Perlid^e, Ephemeridee, Odouata. 



Each slip relating' to Neuroptera should also state 

 which of these divisions it refers to. 



Most of the Palaeozoic Insects are to be dealt with 

 in this Branch. 



4003-4031. Hemiptera (or Rhynchota), excl. Anoplura, 



which are placed in 3603. 



4003 Hemiptera. Comprehensive and General Works. 



4007 Hemiptera. Structure. 



[For sub-divisions, see 0207.] 



4011 Hemiptera. Physiology. 



[For sub-divisions, see 0211.] 



4015 Hemiptera. Development. 



[For sub-divisions, see 0215.] 



4019 Hemiptera. Ethology. 



[For sub-divisions, see 0219.] 



4023 Hemiptera. Variation and ^Etiology. 



[For sub-divisions, see 0223.] 



4027 Hemiptera. Geography. 



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



4031 Hemiptera. Taxonomy and Systematic. 



Consists of Hemiptera Heteroptera (family to be 

 mentioned on each slip if possible), and Hemiptera 

 Homoptera (mention families). (Phytophthires = 

 Aphida3, Psyllidie, Aleumdid^e, Coccidse are included in 

 Hemiptera Homoptera). ; 



