BIOLOGY. 
Ins. 87 
3. Development. 
Metamorphosis ; complete and incomplete ; larva, pupa, nymph, Reh 
(1111). 
The germinal layers and origin of mesenteron, Escherich (421), 
Deegener (328). 
Formation of the germinal layers, Escherich (422). 
Metamorphosis of bee and wasp, Anglas (25). 
Polar bodies in development of fertilised and unfertilised eggs of Apis, 
Petrunkewitsch (1027). 
Embryology and morphology of Aptera , Uzel (1409). 
Development of ovary of Collembcla, LkcAiLLON (824). 
Embryology of Muscidce , Noack (973). 
Origin of imaginal discs in Eristalis , Wahl (1426). 
Imaginal buds, wings and legs of Tipulid , Kellogg (714). 
Metamorphosis of Tenebrio , Manger (874). 
Development of a Pteromalid in Coccidce , Prowazek (1089). 
£ and $ gonapophyses in Dipt, larva, Muggenburg (952). 
Hatching eggs of silkworm, experiments, Quajat (1097). 
Phagocytosis, see 1 g. 
4. General Subjects. 
Variation and Teratology. 
Conditions influencing variation in Lepidoptera , Dahlstrom (317). 
Breeding varr. of Halloa, Foster (481). 
Crossing races, Lasiocampa , Bacot (56). 
Variation of males, periodical pcecilandry, Lesne (835). 
Poecilogyny, polymorphic females of Malthodes , Bourgeois (145). 
Ginecoid workers in Termes , origin of castes, Silvestri (1288). 
Adalia bipunctata L., variation statistics, phylogeny, Schroder (1232). 
Seasonal forms of Precis, Butler (188, 190). 
Experiments in seasonal dimorphism, Marshall (882). 
Coloured light varr.; see Physiology. 
Temperature experiments on Vanessa, Fischer (460); see also Physio- 
1° gj- 
Temperature varr. of Orgyia antiqua , Merrifield, p. xv, P. ent. Soc. 
'London 1901. 
Variation in Erebia , Smith (1305). 
Variation of Setina, Chapman, p. ii, P. ent. Soc. London 1901. 
Variation of Monema Jlavescens, Joannis, p. 251, Bull. Soc. ent. France 
1901. 
Var. of Papilio philenor , Weeks, p. 82, pi. vi, J. N. York Ent. Soc. ix. — 
Spanish var. Parnassius apollo, Chapman, p. xix, P. ent. Soc. London 
1901 .—Gonepteryx rhamni var., Lucas, p. 261, Entomologist xxxiv.—Sex 
var. of Colias edusa, Fowler, p. ii, P. ent. Soc. London 1901. — Vanessa 
urticce var. polaris 1, Imms, p. 148, Ent. Mag. xxxvii.—Varr. of Lyccena 
corydon, Pickett, p. xiv, P. ent. Soc. London 1901. — Varr. of Melanargia 
galathea, Clark, p. 358, pi. viii, figg. 3, 4, Ent. Rec. xiii. 
Var. of Smerinthus tilice, Fletcher, p. 254, Ent. Rec. xiii, and Col- 
thrup, p. 297, t. c.—Var. of Smerinthus ocellatus, Tutt, p. 163, Ent. Rec. 
xiii.—Asymmetric var. of Sphinx pinastri, Burstert, p. 164, cut, Allg. 
Zeitschr. Ent. vi. 
Zygcena tHfolii varr. of in Normandy, Gadeau de Kerville (726). — 
Of Lasiocampa quercus , Warburg (1432). — Varr. of Bryophila muralis, 
Turner, p. iv, P. ent. Soc. London 1901.—Melanie var. of Acronycta 
menyanthidis, Porritt, p. vii, P. ent. Soc. London 1901 .—Heliothis pelti- 
