ANATOMY, PHYSIOLOGY, BIOLOGY. 
Ins, G3 
2. Nervous System, Organs op Sense, and Psychology. 
Nervous system and organs of sense of Thysanura , Grassi (3*29), 
Oudemans (648, pp. 174-179). 
Antennal structures and their functions, Ruland (786). — Sense- 
organs of antennae and trophi, Rath (712). — Structure and function of 
palpi of Lephloptera , Reuter (735). 
Eyes, Ciaccio (153) ; of Thysanura , Oudemans (648, pp. 180-183). — 
Ocelli of Machilis , Grassi (329, p. 603). — Development of eyes in larva 
of Aciliiis, Patten (662). — Sight, Plateau (674, 675, 676), Tiebe (885). 
External parts of organ of hearing of Acridiidce, Haij (357). 
Brain of Somomya erylhrocephala, Cuccati (172) ; of Phylloxera , 
Lemoine (494, 495). 
Senses and instinct, Lubbock (527, 528),Forel (280), Peckham (663), 
Sharp, P. E. Soc. 1888, pp. 1-lxix. — Psychological observations on 
Formica rufa , Reuter (737). — Colour-sense, sense of direction, sense of 
smell, recognition of friends, amongst ants, Lubbock (527). — Means of 
guidance, Putnam, P. Dost. Soc. xxiii, p. 465. — Harvesting ants, Tryon 
( 888). — Ants covering their mounds with bright objects, Hay, Tr. 
Kansas Ac. x, p. 27. — Insects distinguishing colour, Cockerell (157). — 
Faulty instinct, Lugger, P. E. Soc. Wash, i, p. 50. — Relations of position 
6f Insects to light and gravity, Loeb (520, 521). 
3. Muscular System. 
Of Thysanura , Grasst (329). — Histology of muscles of wings, Ciaccio 
( 152) ; of muscles of legs and wings, Ram6n (709). — Notes on the head- 
muscles of Ilarpalus , Grove (347). 
4. Organs and Function of Nutrition. 
Trophi, digestive system, salivary glands, Malpighian vessels of 
Thysanura , Oudemans (648, pp. 184-199). — Malpighian tubules, 
Griffiths (335). — Salivary glands, renal organs, and liver, id. (336). — 
Intestine and fat-body in Thysanura , Grassi (329). — Trituratory-crop 
of ants, Emery (230). — Alimentary canal of Ephemeridce , Fritze (289). 
— Acidity of fluids in digestive tube of Cantharis , Beauregard (48). — 
Liquid secreted by Timarcha pimelioules , Bono (87). 
5. Circulation and Respiration. 
Circulatory system of Thysanura , Grassi (329), Oudemans ( 618, 
pp. 199-201). — Heart beat of Corydalis cornutus , Howard, P. E. Soc. 
Wash, i, p. 34. 
Respiratory system of Thysanura , Grassi (329), Oudemans (648, 
pp. 202-206). — Respiratory apparatus of larvae of Trichoptera , &c., 
Muller (621). — Mode of respiration of larva of Donacia, Dewitz (183). 
— Respiration of eggs of Bomhyx mori, Luciani & Piutti (531, 532). — 
