BIOLOGY. 
Ins. 89 
Ocelli, development of in Periplaneta and Cloeon, Reitzen.stein (1157). 
Development of wings, specially of Coleoptera, Powell (1104). 
Development of rostrum of Rh.ynclophora, McClenahan (930). 
Head-shield, Lep. pupa, Haverhorst (666). 
Development of Aphis ribis^ embryonic and post-embr., Flogel (519). 
Parthenogenetic development, Nematiis^ Doncaster (402). 
Central nervous system, post-embryonic changes, Bauer (93). 
Embryology of mesenteron, Meloe, Czerski (340). 
Metamorphosis of alimentary canal, Deegener (358). 
Irregular metamorphosis, Charaxes^ retention of larval head, Chrietien, 
p. 108, Bull. Soc. ent. France 1904. 
Intracellular histolysis, Muscidce, P^rez (1020). 
Muscle, histolysis, Muscidce., Perez (1019) 
Ecdysis. See glands. 
4. General Subjects. 
Variation and Teratology. 
Physiological distinction of forms of variation, metabolism, von Linden 
<881). . . 
Statistical and general discussion of variation in 24 species of various 
Orders, Kellogg & Bell (783). 
iEtiology of variation, Lep., Rowland-Brown, p. 17, Entomologist 
1904. 
Sexual variation in Pselaphidce. Peyerimhofp (1043). 
Variation in size, Lepidoptera, wing, Auel (56). 
Variation in length of wing, Aporia cmtcegi, Bachmetjew (72). 
Moisture ard Lepidopterous variation, Pictet (1081). 
Seasonal forms in Rhopalocera, Butler (209). — Seasonal phases, Cal- 
lidryades, Butler (208). 
Melanic varr. in E. Tibet, Oberthur, p. 174, Bull. Soc. ent. France 
1904. 
Rhopalocera, 18 varr. of European, Schultz, Soc. ent. xix, p. 9. 
Varr. of European Rhop., specially Tuscan, Verity (1436). 
Varr. of European Lepidoptera, Oberthur (987). 
Varr. of Belgian Lep., Haverkampf (667). 
45 aberrations of exotic R/wpalocera, Lathy (858). 
Varr. of Parnassius, Schultz (1248). 
Variation of Lyccena lysimon, Graves, p. 51, Ent. Rec. xvi. 
Heodes phkeas variation. Chapman, pp. 167-172, Ent. Rec. xvi. 
Variation in number of spots, Epinep/iele, and damp seasons, Bachmet- 
jew (71). 
Varr. of Epinephele titlwnus, Russell, p. 125, cuts, Entomologist 1904. 
Variation of Basilarchia proserpina and allies. Field (499). 
Variation of Hypolimnas bolina in Fiji and Samoa, Waterhouse 
(1492). 
L. oegeria, Guernsey var.. Luff, p. 190, Rep. Guernsey Soc. 1903. 
Variation of larva of Deilepliila lineata livornica, Giard, p. 204, Bull. 
Soc. ent. France 1904. 
Variation in Philosamia, fitness, Crampton (324). 
Zygcena fausta and hippocrepidis, copula and variation, Dupuy, pp. 11, 
12, Feuille Natural, xxxv. 
Catocala nupta, blue var., Smits, p. 128, Feuille Natural, xxxiv. 
Different melanic forms of Venuski in Yorkshire, Porritt, p. 377, 
Naturalist 1904. 
Variation in Larentiidce, Prout (1108). 
Variation of Eupithecia, Dietze (380). 
