17 N 



4203-4231. Diptera (excl. Siphonaptera, which are 



placed in 3603-3631). 



4203 Diptera. Comprehensive and General Works. 

 4207 Diptera. Structure. 



[For sub-divisions, see 0207.] 



4211 Diptera. Physiology. 



[For sub-divisions, see 0211.] 



4215 Diptera. Development. 



[For sub-divisions, see 021.5.] 



4219 Diptera. Ethology. 



[For sub-divisions, see 0219.] 



4223 Diptera. Variation and Etiology. 



[For sub-divisions, see 0223.] 



4227 Diptera. Geography. 



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



4231 Diptera. Taxonomy and Systematic. 



The slips should be marked with the name of the 

 familjgof Diptera. 



4403-4431. Lepidoptera. 

 4403 Lepidoptera. Comprehensive and General Works. 



4407 Lepidoptera. Structure. 



[For sub-divisions, see 0207.] 



4411 Lepidoptera. Physiology. 



[For sub-divisions, see 0211.] 



4415 Lepidoptera. Development. 



[For sub-divisions, see 021o.] 



4419 Lepidoptera. Ethology. 



[For sub-divisions, see 0219.] 



4423 Lepidoptera. Variation and JEtiology. 



[For sub-divisions, see 0223.] 



4427 Lepidoptera. Geography. 



[For sub-divisions, see J, 1 and 2.1 



4431 Lepidoptera. Taxonomy and Systematic. 



Families to be mentioned. 



N.B. — Descriptions of larva3 and special life-histories 



are to be placed as a rule in 4431 , not in 4415. 

 Rhopalocera and Heterocera, also Macrolepidoptera and 



Microlepidoptera are divisions. The families are 



very numerous. The family should be indicated on 



each slip. 

 (n-8469) c 



