90 Ins . xiii. insecta. [1904] 
Results of breeding from Amphidasys betularia and var. doubleday aria , 
Cassall, p. 49, Ent. Rec. xvi. 
Breeding varr. of P. cenea and Hypolimnas misippus , Leigh (871). 
Breeding experiments Catopsilia, M anders (901). 
Crossing varr. of A braxas, Raynor & Doncaster (1120). 
Polymorphism, ants, Forel (525) ; Emery (452). 
Dimorphism <£, Formicidce y Forel (531). 
Variation of Bombus , Friese & Wagner (553). 
Comparative variation of drones and worker bees, Lutz (894). 
In bees, Lutz (894) & Philipps (1046). 
False drones, distinctions, Bachmetjew (70). 
Var. of Cardbus auratus, Clement, p. 245, Bull. Soc. ent. France 1904. 
Extraordinary variability of a beetle Odontopezus cupreus , Gebien, 
pp. 307-311, Deutsche ent. Zeitschr. 1904. 
Goliathus giganteus varr., Csiki, p. 302, Ann. Mus. Hungar. ii. 
Variation of Julodis , Abeille (1). 
Cardbus nemoralis y anomalous tarsus, P^neau, Bull. Soc. Ouest France 
(2) iii, p. xxxvi ; I/ucanus cervus , anomalous tarsus, Marchand, t. c. 
p. xxxvii. 
Supernumerary tarsus, Hydrocharis , Wickham (1527). 
Anomaly of nervuration in a Geometer , Warren, p. 542, Nov. Zool. xi. 
Plurality of wings, Arctia caja, Chapman, p. Iv, P. ent. Soc. London 
1904. 
Abnormal Lepidoptera , supernumerary wing, four antennae etc., Psyche 
xi, p. 113, pi. x. 
Pupa with larval head, Sphinx ligustri , Zang, Allg. Zeitschr. Ent. ix, 
p. 224. 
Hybrids. 
Hybrids of Sphingidce and Zygcenidce , Oberthur (987). 
Zygcena fausta and hippocrepidis copula, Dupuy, p. 226, Bull. Soc. ent. 
France 1904. 
Hybrid, Zygcena and Syntomis, van Rossum, p. 94, Ent. Ber. Neder- 
land. i. 
Copula between different species or genera, Rainbow (1118). 
Colour. 
Coloration, Dewitz (377, 378). 
Opisthenogenesis, or law of development and movement of colour etc., 
Packard (1005). 
Iridescent and metallic coloration, Biedermann (129). 
Tyrosinase in coloration, Gessard (593). 
Coloration of Corethra larva by feeding, Kolmer (832). 
Markings of Lepidopterous larvae, Kusnezov (849). 
Diffraction, scales Lep. and Thysan. y Balsamo (79). 
Cocoons, coloration of, Dewitz (376) ; Verson (1443). 
Coloration of silk, Conte (307) ; Dubois (409) : Coloration of silk, 
question of chlorophyll, Villard (1457, 1458). 
Protection. 
Choosing suitable situations, Hamm, p. lxxv, Chapman, p. lxxvi, P. ent. 
Soc. London 1904. 
Protection by sharing like dangers, Kaye, Tr. ent. Soc. London 1904, 
p. 169. 
Protective coloration, Green (628) ; in Mantis , Cesnola (256b). 
Prot. attitudes, Longstaff, p. lxxxviii, P. ent. Soc. London 1904. 
Birds and butterflies, Poulton, P. ent. Soc. London 1904, p. xxxvii. 
Enemies of butterflies, Aitken (20). 
