ANATOMY, PHYSIOLOGY, BIOLOGY. 
Ins. 63 
Larvae travelling northwards, Slosson, Ent. Am. vi, p. 8. — Walking of 
insects, Demoor (163). 
Life-cycles of Chernies , Cholodkovsky (129). 
Metamorphosis of half-fed larvae, Barrett, Ent. M. M. (2) i, p. 20. 
Loss of weight during the pupal condition of Lepidoptera, Urecii (856). 
Luminosity in insects, A.rculeo (11). — Luminosity, its nature, Wielo- 
wiejski (917). — The cheapest form of light, Ins. Life, iii, p. 90. 
Swarming and migration, discussion, P. E. Soc. Wash, i, pp. 206 & 207. 
— Migrations of Danais archippus, Lugger (495). — Geographical distribu- 
tion and physical conditions ; influence of climate on Lepidoptera , Seitz 
(765). 
Male of Lepidoptera longer in pupa than female, Merrifield (528). — 
Effects of temperature on vigour and vitality of Lepidoptera , Merri- 
field (528). — Viviparous Caddis-fly, Wood-Mason (926). — Mode of 
hardening of silk of Bombyx mori 3 Dubois (190). — Mode of exit from 
cocoon of Hyhocampa milhauseri , Chapman (128). 
Variation : Local variability in Heliconius, Seitz, S. E. Z. li, p. 92. — 
Geographical variation, Skinner, Ent. News, i, p. 85. — Similar variation 
in specimens of Epinephele tithonus , Craske, Ent. xxiii, p. 6. — Percentage 
of variable specimens as to abdominal setae in Nebria , Daniel, Deutsche 
E. Z. 1890, p. 130, note. — Heredity in var. heydeni of Onorimus variabilis , 
Beckers, Deutsche e. Z. 1890, p. 144. — Sports in venation, Cordlev, 
Ent. News, i, p. 88. — Aberration of neuration and colour in Papilio thoas , 
Godman, P. E. Soc. 1890, p. ii. — Variation in neuration of Elis villosa , 
Saunders, Ent. M. M. (2) i, p. 291. — Variation of wing-neuration in 
Biptera , Meijere, Tijdschr. Ent. xxxiii, p. cxii. — Variation of Spilosoma 
lubricipeda, Kallenbacii, Tijdschr. Ent. xxxiii, p. cxxiv. — Zygcena 
Jilipendulce, melanic var., Goss, Ent. M. M. (2) i, p. 247. — Many notes on 
colour variation in British Lepidoptera are to be found in Ent. Record i, 
under the heading “ variation.” 
Seasonal dimorphism, Packard (591). 
Colour: Cockerell (138, 139); Urech (855); Walker (872). 
— Colour of the collecting apparatus in bees, P^rez (599). — Albiuism 
in Psocus sexpunctatus , Loens (488). — Structural causes of colour in 
Coleoptera, Beauregard (37) pp. 3-9. — Chemistry of insects-colours, 
Cockerell, Ent. xxiii, p. 206. — Experiments with chemical reagents on 
the colours of Lepidoptera , Coste (149). — Effects of temperature on colour 
of Lepidoptera , Merrifield (528). — Effects of cold on Grapta interroga- 
tionis, figured and discussed, Edwards (213). — Changes in colour of 
Lepidoptera caused by temperature,, discussion, P. E. Soc. 1890, pp. xl-xlii. 
— Colour of silk, as supposed to be influenced by that of food, Blanc 
(67). — Melanism in London Lepidoptera , Tutt, Tugwell, P. S. Lond. 
Ent. Soc. 1888-89, pp. 44-45. — Melanism in Lepidoptera of Breda, Hey- 
laerts, Tijdschr. Ent. xxxiii, pp. xxxvii & xxxviii. — Colour and protec- 
tion : Advantage of brilliant colour, melanism, &c., Walsingiiam, P. E. 
Soc. 1890, pp. 1, «fec. — Colours, mimicry, protection, &c., Poulton (618). 
Teratology: Bateson (34); Harrington, Canad. Ent xxii, p. 124; 
