BIOLOGY. 
Ins. 65 
g. Physiology. 
Species that are distinguished physiologically but not by structure, 
Cockerell (187), and p. 414, Nature, lv, also op. cit. lvi, p. 11. 
Chemical composition of Margarodes , Briones (132), Lataste (652). 
Contents of malpighian tubes of Orthoptera , Bordas (109). 
Properties of the poison of Vesjoidce, Phisalix (837-839). 
The liquid ejected by Insects m self-defence, Izquierdo (526).^ 
Experiments on the influence of the central nervous system on move- 
ment ( Hydropliilus , Pachytylus , Apis), Bethe (72). 
Effects of artificially pigmenting Carabus , Florentin (347). 
Importance of parasites ; equilibrium between them and hosts, Marchal 
(709). 
Production of animal galls by parasites, Marchal (708) and pp. 86-88, 
Ann. Soc. ent. France, 1897. 
98 per cent, of an Acridian destroyed by a parasitic fly, Lamey, p. 186, 
Bull. Soc. ent. France, 1897. 
Sterility and nutriment in social Hymenoptera , Marchal (712). 
Relative numbers of the two sexes in Blaitidce , Brindley, p. 916, P. Zool. 
Soc. London, 1897. 
Determination of sox, CioSnot (222). — Determination of sox in Cecidomyia , 
Marchal, pp. 41 k 42, Ann. Soc. ent. Franco, 1897. 
Rapid succession of generations in Scsamia uninterrupted by cold, 
Kunokel (644). 
Longevity of encysted Margarodes , Mayet (731). . 
Regeneration of legs in Blattidce , Brindley (131). — Regeneration of 
tarsi with four segments in Phasmidoe , Bordage (102). 
Light. I. Photogenic organisms: ii. Special mechanism of the photo- 
genic function, Dubois (268). — Properties of rays emitted by Lampyridce, 
Thompson, p. 126, Nature, lvi. 
Relation between pseudogynism in ants and the presence of myrmeco- 
philous Coleoptera , Wasmann (1167). 
Influence of a parasite on development of tho ovaries of Leptynia , Pantel 
(819). 
Animal heat of larvae of Bruchus , Smith, p. 140, Ent. News Philad. 1897. 
Effects of media, temperature, etc. on Pytiscus marginalis, Gadeau 
( 389). — Dragon-flies in hot water, Ent. News Philad. 1897, p. 39.— Life of 
a Dipterous larva in brine, Whiting, p. 452, Amer. Natural. 1897. 
Temperature regulates the chirping of crickets, Dolbear (261). 
Physiology of air-spaces, Von Lendenfeld (668). 
Autotomy in Phasmidoe , Bordage (100, 101). 
Respiratory products of eggs of the silkworm moth, Quajat (886). 
Amount of food consumed by Oncideres, SchmXlz, p. 10, Soc. ent. xii. — 
Food ingested, and excrement voided by the larva of a Longicorn beetle, 
Callidium sanguineum, Grandis k Muzio (420). — Nature of the frass or 
excrement of various Insects, Thomas (1079). — The daily excreta of Oberea 
bimaculata, a longicorn beetle, Webster, p. 203, J. N. York ent. Soc. v. 
Potash salts in alimentary canal of Dicranura larva, Latter ; correction 
of statement as to a communication between gut and body-cavity (659). 
Tomporature experiments, Dixey (256). — Temporaturo experiments on 
Lcpidoptera , methods, Fischer (338). — Temporaturo oxporimonts on Lcpi- 
doptera , Marchal (714), Merrifield (739). — Temperature experiments on 
Colouration of Lepidoptera , Merrifield, pp. xviii, xx, xlviii, P. ent. Soc. 
London, 1897. — Temperature experiments (specially Vanessa ), Fischer 
( 339). — Temperature experiments Arctia arge , Seifert, p. 98, J. N. York 
ent. Soc. v. 
Metamorphosis in Insects : imaginal discs ; immunity from histolysis, 
Pratt (881). — Metamorphosis: in Ametabola and Holometabola ; epi- 
1897. [Vol. xxxiv.] E 5 
